Mesozoic periods

Triassic Period (240 to 208 million years ago) At the beginning of the Mesozoic Era, the “supercontinent” began to break up. Deserts covered part of the interior, but shallow seas re-invaded the lowlands. Reptiles evolved rapidly, and two important new groups appeared. Therapsids (mammal-like reptiles) gave rise to true mammals by the end ...

21. Birds are the only dinosaurs to have survived the Mesozoic mass extinction event, 65 million years ago. 22. The sudden extinction event end of the Mesozoic era signaled the beginning of the Cenozoic period; this is the era we are in right now and is often called the age of mammals. 23.5 Jun 2018 ... ... periods of the Mesozoic Era, this 155-kilometer-long coastal strip has long been recognized as an important place in the study of earth science.Over the Mesozoic Era, Pangaea split into a northernmost continent Laurasia and a southernmost continent Gondwana. Laurasia then divided into North America and ...A comprehensive investigation on available borehole pre-Mesozoic basement crystalline rocks within the Qaidam basin reveals that the Qaidam region was involved into at least three tectono-magmatic episodes ... eastern and center regions; (C) During the depositional period of N 2 3 and Q 1+2 strata, the surrounding ranges intensively uplifted ...The Paleozoic Era came before the Mesozoic. The Paleozoic Era was comprised of six periods. The Cambrian period introduced developing arthropods and invertebrate animals with an exoskeleton, such as insects, crustaceans, and more. The Ordovician kickstarted the development of straight-shelled mollusks, distant relatives of the octopus, or squid.Evolution of Gymnosperms. Figure 26.1 B. 1: Seed ferns: This fossilized leaf is from Glossopteris, a seed fern that thrived during the Permian age (290–240 million years ago). The fossil plant Elkinsia polymorpha, a “seed fern” from the Devonian period (about 400 million years ago) is considered the earliest seed plant known to date.C. If the intrusion occurred during the Cretaceous period, it is likely that Stratum A formed during the Cenozoic Era. D. If the intrusion occurred during the Cretaceous period, it is likely that Stratum A formed during the Jurassic period. 2. At left, Ancestral species 0 gives rise to Descendant species 1 and 2 , each with an Examplase gene.

The Cretaceous-Tertiary Mass Extinction (or K-T Extinction) became the dividing line between the final period of the Mesozoic Era—the Cretaceous Period—and the Tertiary Period of the Cenozoic Era. It is also the event that wiped out the dinosaurs. The dinosaurs were not the only species to go extinct, however—up to 75% of all known …The Mesozoic Era. The Mesozoic era lasted about 185.5 million years, from about 251 million years ago to about 65.5 million years ago. It is divided into three periods. From the earliest to the most recent, these periods are the Triassic, the Jurassic, and the Cretaceous. The Mesozoic era is sometimes called the Age of Reptiles because reptiles ... cenozoic mesozoic paleozoic precambrian age epoch age picks magnetic period hist. chro n. polarity quater-nary pleistocene* holocene* calabrian gelasian c1 c2 c2a c3 c3a c4 c4a c5 c5a c6 c6a c6b c6c c7 c5b c5c c5d c5e c8 c9 c10 c7a c11 c12 c13 c15 c16 c17 c18 c19 c20 c21 c22 c23 c24 c25 c26 c27 c28 c29 c30 0.012 1.8 3.600 5.333 7.246 11.63 13. ...Pregnancy is the most common reason for a missed period, but it’s not the only reason. In this video, SciShow explains a few other reasons you might skip a period. Pregnancy is the most common reason for a missed period, but it’s not the on...The fourth major mass extinction was actually a combination of many, smaller extinction events that happened over the last 18 million years of the Triassic Period during the Mesozoic Era. Over this long time span, about half of all known species on Earth at the time perished.The Mesozoic era, when dinosaurs ruled, is divided into the Triassic, Jurassic, and Cretaceous periods. You can look at how the different eras are divided in the geologic timeline shown. Each era is represented by a unique group of organisms that lived together during that time.The Modern Fauna diversified very rapidly in the Triassic Period following the End Permian mass extinction event. A general trend of increasing diversity continued through the Mesozoic and Cenozoic; however, two mass extinction events were responsible for loss of diversity at the end of the Triassic and at the end of the Cretaceous. The End …Australia - Mesozoic, Cenozoic, Ecosystems: The coal measures of the Permian gave way to barren red beds in the early part of the Triassic Period (about 252 to 247 million years ago). By 230 million years ago the foreland basin of eastern Australia had been overthrusted by the mountain belt, and a second epoch of black-coal formation opened in eastern …

Mesozoic Map of Pangaea with modern continents outlined. The eastern United States was part of Pangaea's interior for most of the Triassic Period of the Mesozoic era. At the time, the area lay close to the equator and was connected to western Europe and Africa.Cretaceous Period, in geologic time, the last of the three periods of the Mesozoic Era. The Cretaceous began 145.0 million years ago and ended 66 million years ago; it followed the Jurassic Period and... Tertiary Period. Tertiary Period, former official interval of geologic time lasting from approximately 66 million to 2.6 million years ago. The Triassic period, Jurassic period, and Cretaceous period each encompass about 50 to 80 millions years on a geologic time scale. The name ‌ Mesozoic ‌ means “middle life,” as it falls between the ‌ Paleozoic ‌ era, meaning “old life,” and ‌ Cenozoic ‌ era, meaning “new life.”. The flora and fauna in the world during ...Cretaceous Period, in geologic time, the last of the three periods of the Mesozoic Era. The Cretaceous began 145.0 million years ago and ended 66 million years ago; it followed the Jurassic Period and... Tertiary Period. Tertiary Period, former official interval of geologic time lasting from approximately 66 million to 2.6 million years ago.

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Find out more about the Mesozoic paleontology and geology of North America at the Paleontology Portal's pages on the Cambrian, Ordovician, Silurian, Devonian, Carboniferous, and Permian Periods. See the Wikipedia page on the Paleozoic. Read more about the Permian-Triassic extinction on Wikipedia.Dinosaurs dominated the Mesozoic Era, which was known as the “age of reptiles.” The dominance of dinosaurs lasted until the end of the Cretaceous, the last period of the Mesozoic Era. The Cretaceous-Tertiary extinction resulted in the loss of most of the large-bodied animals of the Mesozoic Era.Summary Edit. DescriptionMesozoic Mesozoikum.png. English: The mesozoic era. Lettering in German. Deutsch: Eine zeitliche Übersicht über das Mesozoikum, der ...Tertiary Period, former official interval of geologic time lasting from approximately 66 million to 2.6 million years ago. It is the traditional name for the first of two periods in the Cenozoic Era (66 …The Mesozoic Era lasted about 180 million years, from about 245 million years ago to about 65 million years ago. The Mesozoic is divided into just three time periods: the Triassic, the Jurassic, and the Cretaceous. Since lots of things were going on in each time period, we can only summarize the events. You can learn more by going to your ...

At least two Tethyan seas successively occupied the area between Laurasia and Gondwana during the Mesozoic Era. The first, called the Paleo-Tethys Sea, or Paleo-Tethys Ocean, was created during the convergence of all landmasses into what would become the supercontinent of Pangea late in the Paleozoic Era. During the Permian and …The Mesozoic Era began approximately 252 million years ago at the close of the Paleozoic Era and ended 66 million years ago at the dawn of the Cenozoic Era. The Mesozoic is best known as the time of the dinosaurs. Dinosaurs first appeared early in the Mesozoic and came to dominate life on Earth throughout the rest of the era. The Mesozoic is ... The Paleozoic Era - green signposts; The Mesozoic Era - blue signposts; The Cenozoic Era - yellow signposts; Each Era is split into even smaller parts known as Periods and Epochs. These boundaries were first defined by the appearance (evolution) or disappearance (extinction) of fossil species in rocks. On this page you will find the solution to First period of the Mesozoic Era crossword clue. This clue was last seen on October 7 2017 on New York Times's Crossword. In case the clue doesn't fit or there's something wrong please contact us! First period of the Mesozoic Era TRIASSIC Done with First period of the Mesozoic Era? Go back and see the other crossword clues for New York Times ...Triassic Period. Learn about the time period that took place 251 to 199 million years ago. The start of the Triassic period (and the Mesozoic era) was a desolate time in Earth's history. Something ...It lasted from c. 251 to c. 65.5 million years ago and includes the Triassic, Jurassic, and Cretaceous periods. The Mesozoic saw the evolution of widely diversified and advanced flora and fauna, quite different from those that had developed earlier during the Paleozoic Era or that would develop later during the Cenozoic Era.In 2019, researchers published the discovery of another T. rex fossil, nicknamed "Scotty," that edged out Sue as the most massive of its kind, likely weighing in at 19,555 lbs. (8,870 kilograms ...Jun 11, 2018 · Mesozoic The middle of three eras that constitute the Phanerozoic period of time, about 248–65 Ma ago. The Mesozoic (literally ‘middle life’) was preceded by the Palaeozoic Era and followed by the Cenozoic Era. The Mesozoic comprises the Triassic, Jurassic, and Cretaceous Periods. Spanning around 200 million years, the Mesozoic Era was characterized by rapid evolution of life on the Earth, most noteworthy being the rise and fall of the dinosaurs. In the plant kingdom, the flowering plants appeared for the first time. Read this ScienceStruck article to know more about various characteristics of this era, like the plants, animals, climatic conditions, and major events. During the Mesozoic Era, there were various extinctions, the largest of which occurred between the Triassic period, ... The period since the dinosaurs' extinction is known as the Cenozoic and is divided into 2 periods: the Paleogene period (which is itself divided into the Paleocene, Eocene and Oligocene epochs), and the Neogene period (which ...

In the Geologic Time Scale, time is generally divided on the basis of the earth's biotic composition, with the Phanerozoic Eon (i.e. the Paleozoic, Mesozoic and Cenozoic Eras) representing the period of Earth's history with advanced life forms, and the Pre Cambrian (or Proterozoic and Hadean Eras) representing the period before advanced life.

The Mesozoic begins where the upheavals of the Permian Extinctions end. A mass extinction at the end of the Permian Period had eliminated most of the species of ...Ages of the Dinosaurs (The Mesozoic Era) This chart is a simple overview of the Triassic, Jurassic, and Cretaceous periods, all of which were part of the Mesozoic era. In brief, this incredibly long period of time, measured in "mya" or "millions of years ago," saw the development of dinosaurs, marine reptiles, fish, mammals, flying animals ...Key Points. Angiosperms evolved during the late Cretaceous Period, about 125-100 million years ago. Angiosperms have developed flowers and fruit as ways to attract pollinators and protect their seeds, respectively. Flowers have a wide array of colors, shapes, and smells, all of which are for the purpose of attracting pollinators.The Phanerozoic Eon (Greek: period of well-displayed life) marks the appearance in the fossil record of abundant, shell-forming and/or trace-making organisms. It is subdivided into three eras, the Paleozoic , Mesozoic and Cenozoic , with major mass extinctions at division points.Geologic Time Scale. Humans subdivide time into useable units such as our calendar year, months, weeks, and days; geologists also subdivide time. They have created a tool for measuring geologic time, breaking it into useable, understandable segments. For the purposes of geology, the “calendar” is the geologic time scale.Over the Mesozoic Era, Pangaea split into a northernmost continent Laurasia and a southernmost continent Gondwana. Laurasia then divided into North America and ...The Jurassic period was the second segment of the Mesozoic era. It occurred from 201.3 million to 145 million years ago, following the Triassic period and preceding the Cretaceous period. During ...The Paleozoic Era is literally the era of “old life.”. It lasted from 544 to 245 million years ago and is divided into six periods. Major events in each period of the Paleozoic Era are described in Figure below. The era began with a spectacular burst of new life. This is called the Cambrian explosion.

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Jun 11, 2018 · Mesozoic The middle of three eras that constitute the Phanerozoic period of time, about 248–65 Ma ago. The Mesozoic (literally ‘middle life’) was preceded by the Palaeozoic Era and followed by the Cenozoic Era. The Mesozoic comprises the Triassic, Jurassic, and Cretaceous Periods. All periods are different. But if your period is suddenly different from what you usually experience, then you should talk to your doctor. Here are some abnormal period symptoms you shouldn't ignore. Periods are like snowflakes, no two are ...The Triassic Period is the first of the three periods that make up the Mesozoic Era (just as years can be divided into months, eras can be divided into periods). It began 251.9 million years ago (Mya), and ended 201.3 Mya. It was preceded by the Permian Period and followed by the Jurassic Period. The Triassic Period lasted around …Another mass extinction event occurred at the end of the Cretaceous period, bringing the Mesozoic Era to an end. Skies darkened and temperatures fell as a large meteor impact and tons of volcanic ash blocked incoming sunlight. Plants died, herbivores and carnivores starved, and the mostly cold-blooded dinosaurs ceded their dominance of the ...Ever wonder why the dinosaurs disappeared? HHMI BioInteractive investigates the cause of the mass extinction at the end of the Cretaceous period—and the clue...The geologic time scale or geological time scale ( GTS) is a representation of time based on the rock record of Earth. It is a system of chronological dating that uses chronostratigraphy (the process of relating strata to time) and geochronology (a scientific branch of geology that aims to determine the age of rocks).Summary Edit. DescriptionMesozoic Mesozoikum.png. English: The mesozoic era. Lettering in German. Deutsch: Eine zeitliche Übersicht über das Mesozoikum, der ...Nov 23, 2020 · The Paleozoic Era came before the Mesozoic. The Paleozoic Era was comprised of six periods. The Cambrian period introduced developing arthropods and invertebrate animals with an exoskeleton, such as insects, crustaceans, and more. The Ordovician kickstarted the development of straight-shelled mollusks, distant relatives of the octopus, or squid. Non-bird dinosaurs lived between about 245 and 66 million years ago, in a time known as the Mesozoic Era. This was many millions of years before the first modern humans , Homo sapiens , appeared. Scientists divide …Oct 19, 2023 · Cenozoic Era, third of the major eras of Earth’s history, beginning about 66 million years ago and extending to the present. It was the interval of time during which the continents assumed their modern configuration and geographic positions and during which Earth’s flora and fauna evolved toward those of the present. The supercontinent Pangaea in the early Mesozoic (at 200 Ma). Pangaea or Pangea (/ p æ n ˈ dʒ iː. ə /) was a supercontinent that existed during the late Paleozoic and early Mesozoic eras. It assembled from the earlier continental units of Gondwana, Euramerica and Siberia during the Carboniferous approximately 335 million years ago, and began to break apart …Triassic Period, in geologic time, the first period of the Mesozoic Era, lasting from 252 million to 201 million years ago. It marked the beginning of major changes that were to take place throughout the Mesozoic Era, particularly in the evolution of life and the distribution of continents and living things. ….

It lasted from c. 251 to c. 65.5 million years ago and includes the Triassic, Jurassic, and Cretaceous periods. The Mesozoic saw the evolution of widely diversified and advanced flora and fauna, quite different from those that had developed earlier during the Paleozoic Era or that would develop later during the Cenozoic Era.The Mesozoic is divided into three geologic periods; from oldest to youngest, these are the Triassic (252 million to 201 million years ago), Jurassic (201 million to 145 million years ago), and Cretaceous (145 …The Triassic period was the first period of the Mesozoic era and occurred between 251.9 million and 201.3 million years ago. It followed the great mass extinction at the end of the Permian period and was a time when life outside of the oceans began to diversify.Aug 1, 2016 · Dinosaur Periods of the Mesozoic Era. Dinosaurs were alive in the Triassic, Jurassic and Cretaceous periods. Together, these three periods make up the Mesozoic Era. Due to the dominance of the dinosaurs and other reptiles during the Mesozoic Era, it has become known as the ‘Age of Reptiles’. Mesozoic Era (252.17 to 66 million years ago) The Mesozoic Era lasted about 180 million years, from about 245 million years ago to about 65 million years ago. The Mesozoic is divided into just three time periods: the Triassic, the Jurassic, and the Cretaceous. Since lots of things were going on in each time period, we can only summarize the events. You can learn more by going to your ... The Triassic Period is the first of the three periods that make up the Mesozoic Era (just as years can be divided into months, eras can be divided into periods). It began 251.9 million years ago (Mya), and ended 201.3 Mya. It was preceded by the Permian Period and followed by the Jurassic Period. The Triassic Period lasted around …The Triassic period was the first period of the Mesozoic era and occurred between 251.9 million and 201.3 million years ago. It followed the great mass extinction at the end of the Permian period and was a time when life outside of the oceans began to diversify.1 Okt 2019 ... The Mesozoic era, which spanned the time from 251 million to 66 million years ago, is often referred to as the age of dinosaurs. But ...C. If the intrusion occurred during the Cretaceous period, it is likely that Stratum A formed during the Cenozoic Era. D. If the intrusion occurred during the Cretaceous period, it is likely that Stratum A formed during the Jurassic period. 2. At left, Ancestral species 0 gives rise to Descendant species 1 and 2 , each with an Examplase gene. Mesozoic periods, The Atlantic Ocean continued to lengthen and widen, particularly to the …, Triassic Period. Learn about the time period that took place 251 to 199 million years ago. The start of the Triassic period (and the Mesozoic era) was a desolate time in Earth's history. Something ..., The complete lack of feathers (a feature not seen in any pterosaur of the Mesozoic Era, though in plenty of meat-eating dinosaurs) implies that Quetzalcoatlus possessed a reptilian, cold-blooded metabolism, in sharp contrast to the feathered theropod dinosaurs it coexisted with during the late Cretaceous period, which may well have had …, cenozoic mesozoic paleozoic precambrian age epoch age picks magnetic period hist. chro n. polarity quater-nary pleistocene* holocene* calabrian gelasian c1 c2 c2a c3 c3a c4 c4a c5 c5a c6 c6a c6b c6c c7 c5b c5c c5d c5e c8 c9 c10 c7a c11 c12 c13 c15 c16 c17 c18 c19 c20 c21 c22 c23 c24 c25 c26 c27 c28 c29 c30 0.012 1.8 3.600 5.333 7.246 11.63 13. ..., Examples of Mesozoic Era animals include dinosaurs, pterosaurs, ammonites, sharks, plesiosaurs, ichthyosaurs, mosasaurs, pseudosuchians, insects, and early mammals. Although dinosaurs were the dominant land animals of the Mesozoic Era, many other important animal groups evolved and thrived during this time. On this page is a list of Mesozoic ..., The time scale is divided into four large periods of time—the Cenozoic Era, Mesozoic Era, Paleozoic Era, and The Precambrian. Cenozoic Era. The Cenozoic Era (66 million years ago through today) is the "Age of Mammals." Birds and mammals rose in prominence after the extinction of giant reptiles. Common Cenozoic fossils include cat …, The Geological time succeeding Azoic Era, was dramatic and rich in life. This period is divided into three eras. These were significant periods in earth's history. Of these, the oldest era was the Paleozoic era. It ranged from 600 to 210 million years ago. Thus its duration was nearly 390 million years., Over the Mesozoic Era, Pangaea split into a northernmost continent Laurasia and a southernmost continent Gondwana. Laurasia then divided into North America and ..., The Mesozoic era spans from about 252 million years ago to 66 million years ago. It is also called the age of reptiles or the age of dinosaurs. In the Mesozoic era, the animals that existed ranged ..., 23 Nov 2020 ... From the climate and the geographical aspects of the world all the way down to the plants and animals, the Mesozoic Era was very diverse. Yes, ..., Eons, eras, periods, epochs, and ages are a few of the named units of abstract time that it divides all of the time into. Read here to learn in detail about the geologic time scale. ... (Mesozoic) Jurassic- 201.4 to 145 million years ago (Mesozoic) Triassic- 251.9 to 201.4 million years ago (Mesozoic), 29 Feb 2012 ... Fleas are one of the major lineages of ectoparasitic insects and are now highly specialized for feeding on the blood of birds or mammals., Cretaceous Period, in geologic time, the last of the three periods of the Mesozoic Era. The Cretaceous began 145.0 million years ago and ended 66 million years ago; it followed the Jurassic Period and... Tertiary Period. Tertiary Period, former official interval of geologic time lasting from approximately 66 million to 2.6 million years ago., Paleozoic (541-252 million years ago) means ‘ancient life.’ The oldest animals on Earth appeared just before the start of this era in the Ediacaran Period, but scientists had not yet discovered them when the geologic timescale was made. Life was primitive during the Paleozoic and included many invertebrates (animals without backbones) and the earliest …, The Mesozoic Era, here is all you need to know about the climate, continents, plants and animals of the Mesozoic, including the dinosaurs, the first mammals and flowers. The Mesozoic begins where the upheavals of the Permian Extinctions end. A mass extinction at the end of the Permian Period had eliminated most of the species of life that had ..., The Mesozoic Era (251.9 to 66.0 million years ago) was the "Age of Reptiles." During the Mesozoic, Pangaea began separating into the modern continents, and the modern Rocky Mountains rose. Dinosaurs, crocodiles, and pterosaurs ruled the land and air., Triassic Period (240 to 208 million years ago) At the beginning of the Mesozoic Era, the “supercontinent” began to break up. Deserts covered part of the interior, but shallow seas re-invaded the lowlands. Reptiles evolved rapidly, and two important new groups appeared. Therapsids (mammal-like reptiles) gave rise to true mammals by the end ..., The supercontinent Pangaea in the early Mesozoic (at 200 Ma). Pangaea or Pangea (/ p æ n ˈ dʒ iː. ə /) was a supercontinent that existed during the late Paleozoic and early Mesozoic eras. It assembled from the earlier continental units of Gondwana, Euramerica and Siberia during the Carboniferous approximately 335 million years ago, and began to break apart …, Key Points. Angiosperms evolved during the late Cretaceous Period, about 125-100 million years ago. Angiosperms have developed flowers and fruit as ways to attract pollinators and protect their seeds, respectively. Flowers have a wide array of colors, shapes, and smells, all of which are for the purpose of attracting pollinators., The Mesozoic era spans from about 252 million years ago to 66 million years ago. It is also called the age of reptiles or the age of dinosaurs. In the Mesozoic era, the animals that existed ranged ..., Browse, borrow, and enjoy titles from the North Carolina Digital Library digital collection., Jan 20, 2019 · Ages of the Dinosaurs (The Mesozoic Era) This chart is a simple overview of the Triassic, Jurassic, and Cretaceous periods, all of which were part of the Mesozoic era. In brief, this incredibly long period of time, measured in "mya" or "millions of years ago," saw the development of dinosaurs, marine reptiles, fish, mammals, flying animals ... , The Triassic Period, the youngest period of the Mesozoic Era, was the time in which both mammals and dinosaurs evolved. The Mesozoic ended with a major extinction at the close of the Cretaceous Period. All dinosaurs except birds disappeared in this extinction. Another mass extinction occurred near the end of the Triassic Period. The Cenozoic ... , In fact, this fuzz may have helped snails transition from a watery environment to life on land during the Mesozoic period 252 to 66 million years ago, the researchers suggest. The hairs are formed from the outermost protein filled layer of the snail's shell – the shell's skin – called the periostracum ., Triassic Period (240 to 208 million years ago) At the beginning of the Mesozoic Era, the “supercontinent” began to break up. Deserts covered part of the interior, but shallow seas re-invaded the lowlands. Reptiles evolved rapidly, and two important new groups appeared. Therapsids (mammal-like reptiles) gave rise to true mammals by the end ..., The Mesozoic Era is literally the era of “middle life.”. It is also known as the age of dinosaurs. It lasted from 245 to 65 million years ago and is divided into the three periods described in Figure below. The Mesozoic began with the supercontinent Pangaea. Then, during the era, Pangaea broke up and the continents drifted apart. , The Mesozoic Era is the second-to-last era of Earth's geological history, lasting from about , comprising the Triassic, Jurassic and Cretaceous Periods. It is characterized by the dominance of archosaurian reptiles , such as the dinosaurs ; an abundance of gymnosperms , (such as ginkgoales , bennettitales ) and ferns ; a hot greenhouse climate ..., 10 Jun 2023 ... The Mesozoic era, also known as the #ageofdinosaurs, was a period of significant changes in the plant world. During this period, various ..., Mesozoic The middle of three eras that constitute the Phanerozoic period of time, about 248–65 Ma ago. The Mesozoic (literally ‘middle life’) was preceded by the Palaeozoic Era and followed by the Cenozoic Era. The Mesozoic comprises the Triassic, Jurassic, and Cretaceous Periods., The meaning of MESOZOIC is of, relating to, or being an era of geologic history comprising the interval between the Permian and the Tertiary or the corresponding system of rocks that was marked by the presence of dinosaurs, marine and flying reptiles, ammonites, ferns, and gymnosperms and the appearance of angiosperms, mammals, and birds., Jan 20, 2019 · Ages of the Dinosaurs (The Mesozoic Era) This chart is a simple overview of the Triassic, Jurassic, and Cretaceous periods, all of which were part of the Mesozoic era. In brief, this incredibly long period of time, measured in "mya" or "millions of years ago," saw the development of dinosaurs, marine reptiles, fish, mammals, flying animals ... , Browse Getty Images' premium collection of high-quality, authentic Mesozoic Era stock photos, royalty-free images, and pictures. Mesozoic Era stock photos ..., Mesozoic Era. The amber specimen HPG-15-1 (Hupoge Amber Museum, China) is quite large, about 9cm long, while the hatchling is small, about 6cm from snout to tail, including...