second period of the Mesozoic Era

The Jurassic (/dʒʊˈræsɪk/ juurr-ASS-ik) is a geologic period and stratigraphic system that spanned from the end of the Triassic Period 201.4 Ma (million years ago) to the beginning of the Cretaceous Period, … Wikipedia
Factsheet
Etymology
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Factsheet
Etymology
Name formality Formal
Usage information
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Wikipedia
en.wikipedia.org › wiki › Jurassic
Jurassic - Wikipedia
1 week ago - The first stem-group birds appeared during the Jurassic, evolving from a branch of theropod dinosaurs. Other major events include the appearance of the earliest crabs and modern frogs, salamanders and lizards. Mammaliaformes, one of the few cynodont lineages to survive the end of the Triassic, continued to diversify throughout the period, with the Jurassic seeing the emergence of the first crown group mammals.
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Natural History Museum
nhm.ac.uk › discover › dino-directory › timeline › late-jurassic › gallery.html
Dinosaurs from the Late Jurassic Period | Natural History Museum
(164 to 145 million years ago) 45 dinosaurs from the Late Jurassic · Agilisaurus · Allosaurus · Anchiornis · Apatosaurus · Archaeopteryx · Barosaurus · Brachiosaurus · Camarasaurus · Camptosaurus · Ceratosaurus · Chaoyangsaurus · Chinshakiangosaurus ·
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Natural History Museum
nhm.ac.uk › discover › the-jurassic-period.html
The Jurassic Period: How did dinosaurs go from basal to bulky? | Natural History Museum
The Jurassic is a geological period that began 201.4 million years ago and ended 145 million years ago. It’s part of the Mesozoic Era – the part of our planet’s prehistory known as the age of the dinosaurs.
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U.S. National Park Service
nps.gov › subjects › fossils › jurassic-dinosaurs.htm
Jurassic Dinosaurs - Fossils and Paleontology (U.S. National Park Service)
We have bones and/or footprints of most of the major lineages of dinosaurs dating back to the Early Jurassic: carnivorous theropods; the enormous sauropods with their long necks and long tails; armored dinosaurs, including plated stegosaurs and scute-bearing ankylosaurs; and ornithopods, bipedal beaked herbivores.
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Dinosaur World Live
dinosaurworldlive.com › blog › different-dinosaur-eras-and-what-they-mean
Different dinosaur eras and what they mean
Alongside them came the rise of medium to large theropods - meat-eating dinosaurs. Dinosaurs from the Jurassic period include Allosaurus, Brachiosaurus, Compsognathus, Diplodocus, Giraffatitan and Stegosaurus.
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Fandom
dinopedia.fandom.com › wiki › Category:Jurassic_dinosaurs
Category:Jurassic dinosaurs | Dinopedia | Fandom
Category:Late Jurassic dinosaurs · Ledumahadi · Leonerasaurus · Leshansaurus · Lesothosaurus · Lexovisaurus · Leyesaurus · Limusaurus · Lophostropheus · Loricatosaurus · Losillasaurus · Lourinhanosaurus · Lourinhasaurus · Lufengosaurus · Lusitanosaurus ·
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University of California Museum of Paleontology
ucmp.berkeley.edu › mesozoic › jurassic › jurassic.php
The Jurassic Period
Great plant-eating dinosaurs roaming the earth, feeding on lush ferns and palm-like cycads and bennettitaleans … smaller but vicious carnivores stalking the great herbivores … oceans full of fish, squid, and coiled ammonites, plus great ichthyosaurs and long-necked plesiosaurs … vertebrates taking to the air, like the pterosaurs and the first birds. This was the Jurassic Period, 199.6 to 145.5 million years ago* — a 54-million-year chunk of the Mesozoic Era.
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Reddit
reddit.com › r/paleontology › why is the jurassic period the one most popularly associated with dinosaurs, when most of the most recognizable dinosaur species are from the cretaceous?
r/Paleontology on Reddit: Why is the Jurassic period the one most popularly associated with dinosaurs, when most of the most recognizable dinosaur species are from the Cretaceous?
April 23, 2024 -

I know the easy answer is "Jurassic Park," but that's just begging the question, since clearly Jurassic Park also got the idea from somewhere that Jurassic = dinosaurs, even though most of the species in the film/book are also Cretaceous species.

The most plausible answer I can come up with with no historical backing is that it's because Mary Anning and the other early paleontologists who founded the field in the early 1800s were digging primarily in Jurassic sites, so most of the finds that entered the public consciousness were Jurassic species, and that name just kind of stuck in people's minds as a synecdoche for the genera of animals being found. Is this the case, or is there more at play to the story that I'm not aware of?

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Active Wild
activewild.com › home › jurassic dinosaurs list: discover the dinosaurs that lived in the jurassic period
Jurassic Dinosaurs. List Of Dinosaurs That Lived In The Jurassic Period
May 17, 2024 - Jurassic dinosaurs list with pictures, information & facts. Discover the dinosaurs that lived in the Jurassic Period. Stegosaurus, Diplodocus & many more.
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Wikipedia
en.wikipedia.org › wiki › Late_Jurassic
Late Jurassic - Wikipedia
1 month ago - This epoch is well known for many famous types of dinosaurs, such as the sauropods, the theropods, the thyreophorans, and the ornithopods. Other animals, such as some crocodylomorphs and the first birds, appeared in the Jurassic.
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National Geographic
nationalgeographic.com › home › science › what is the jurassic period and why did it end?
Jurassic period information and facts | National Geographic | National Geographic
August 18, 2025 - Thanks to this rich record, we know that the Jurassic was the age of dinosaurs roaming a tropical Earth filled with ferns, flowering plants, and conifers. It was also a time when sea monsters, sharks, and blood-red plankton filled inland seas borne of crumbling landmasses. Here’s what the Jurassic period was really like.
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Natural History Museum
nhm.ac.uk › discover › dino-directory › timeline › early-jurassic › gallery.html
Dinosaurs from the Early Jurassic Period | Natural History Museum
(201 to 174 million years ago) 20 dinosaurs from the Early Jurassic · Aardonyx · Ammosaurus · Anchisaurus · Barapasaurus · Cryolophosaurus · Dilophosaurus · Heterodontosaurus · Jingshanosaurus · Kotasaurus · Lesothosaurus · Lophostropheus · Lufengosaurus ·
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Natural History Museum
natmus.humboldt.edu › exhibits › life-through-time › visual-timeline › jurassic-period
Jurassic Period | Natural History Museum
Jurassic* ammonites and dinosaurs made a huge comeback after their near extinction at the end of the Triassic. Oysters, crabs, lobsters, and teleost (modern) fish appear. Plesiosaurs and marine crocodiles first appeared, joining icthyosaurs, sharks, bony fish, cephalopods and many other marine ...
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U.S. National Park Service
nps.gov › articles › 000 › jurassic-period.htm
Jurassic Period—201.3 to 145.0 MYA (U.S. National Park Service)
In 1839 Leopold von Buch redefined the Jurassic as a system in its own right (Eicher 1976). The Jurassic Period was a golden time for dinosaurs, which flourished for 180 million years.
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Encyclopedia Britannica
britannica.com › science › earth science, geologic time & fossils › fossils & geologic time
Jurassic Period - Dinosaurs, Reptiles, Amphibians | Britannica
July 26, 1999 - Jurassic Period - Dinosaurs, Reptiles, Amphibians: Along with invertebrate fauna, a diverse group of vertebrates inhabited Jurassic seas. Some of them are related to modern groups, while others are now completely extinct. Chondrichthians (cartilaginous fishes including sharks) and bony fishes ...
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University of California Museum of Paleontology
ucmp.berkeley.edu › mesozoic › jurassic › jurassiclife.html
Life of the Jurassic Period
The largest dinosaurs of the time -- in fact, the largest land animals of all time -- were the gigantic sauropods, such as the famous Diplodocus (pictured at lower left), Brachiosaurus and Apatosaurus. Other herbivorous dinosaurs of the Jurassic included the plated stegosaurs.
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Study.com
study.com › science courses › dinosaur study guide
Dinosaurs of the Jurassic Period | Study.com
If you could go back in time to the Jurassic Period, one of the first things you'd definitely notice would be various sauropods, which were the largest terrestrial dinosaurs to have ever existed.
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Live Science
livescience.com › animals › extinct species › dinosaurs
Jurassic Period Facts: Dinosaurs, Mammals, Plants | Live Science
April 16, 2013 - Despite the small brains, this group was very successful during the Jurassic period and had a wide geographic distribution. Sauropod fossils have been found on every continent, even Antarctica. Other well-known dinosaurs of the Jurassic include the plated Stegosaurus and the 40-foot-tall (12 meters) Giraffatitan, likely the tallest dinosaur that ever lived.
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EBSCO
ebsco.com › research-starters › geology › jurassic-period
Jurassic Period | Research Starters | EBSCO Research
The Jurassic is divided into three ... dinosaurs reached remarkable sizes and diversity, with notable species such as Apatosaurus and Stegosaurus....