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Home , Dilophosaurus, Tyrannosaurus

The Period

Presentation by Isabella Siler and Robin Schneider

Dilophosaurus. You’ll learn about them later. The Jurassic period: what does it mean?

The word Jurassic means of or to the Jurassic period, which occurred between the and periods in the era, which means “The ”. How long did it last?

This period lasted from 199.6 to 145.5 million ago and ended with a mass and the beginning of Cretaceous period. It started with a major extinction event as well, with most invertebrates going extinct. The Jurassic period was a part of the Mid-Mesozoic era. Earth’s Climate During this time

The Earth’s climate during the Jurassic period was quite warm, with tropical climates and temperate ones. Scientists have found that there weren’t many glaciers during this time and many lush forests, indicating that it was warmer during this period. The atmosphere during this time

Science shows the atmosphere was humid, cloudy, and had much more carbon dioxide in the air than the current atmosphere. Earth’s continents during the Jurassic Period

This was right after pangea broke up, so there were only 2 supercontinents: Laurasia and Gondwana. Laurasia was in the north while Gondwana was in the south. Laurasia is now , Europe and ; Gondwana is currently South America, India, Africa, Australia and Antarctica. of the Jurassic - On The Ground

Although the term Jurassic may conjure up images of dinosaurs like rex, stegosaurus, or . However, none of those dinosaurs lived during this time. The Jurassic period was the golden age for sauropods, large, long-necked quadruped dinosaurs. The most famous being , the ancestor to the largest known to have walked the planet, Argentinosaurus, a 100 ton sauropod. Certain sauropods, like Mamenchisaurus (below), had necks more than half their entire body length, making scientists question even today how they held their heads up.

Doc Veggie Boi Long Boi Tall Boi BUT WAIT - There’s more. He give the big chomp. Predators like , a slightly smaller cousin of the tyrannosaurus was believed to eegfiufbiwbfiiubibiubib have hunted in packs to take down the large prey during this time. Some scientists think oiohohohihoihohoihohh they had the ability to unhinge their jaw like a snake. Because we love nightmares.

I told you they’d be back! was another predator during this time. Unlike most creatures from the 1993 movie , Dilophosaurus was actually larger than depicted. Remember the frilly, venom spitting boy? Yeah. They were bigger. Dilophosaurus Are you feeling it now, Mr. based on Krabs? actual --->

Dilophosaurus in Jurassic Park (1993)

He has a cough. To Birb or not to Birb...

Dinosaurs of the Jurassic - In The Sky

Dinosaurs and not-so-dinosaurs ruled the skies during the Archaeopteryx Jurassic period. Dinosaurs like Dimorphodon, a small winged creature with a huge t-rex shaped head(seriously, this thing was a mutant) played a dominant role. The Jurassic was also the period where the first came into known existence. Archaeopteryx, a small feathered creature, is still argued over today as to weather it was a or reptile, but it may have been the ancestor to the giraffe sized Quetzalcoatl. <---- Quetzalcoatlus Giraffe ----->

Dimorphodon screeeeeech

Middle Aged Man ------> Dinosaurs of the Jurassic - In The Water

Long necks were not limited to the land in the Jurassic, top predators like Plesiosaurus preyed on schools of fish in the shallow oceans. Larger creatures like Liopleurodon (left) fed on Plesiosaurs and other dinosaurs alike, such as the Ichythodon (right), a large dolphin-like creature. Larger like the Leedsichthys, ancestor to the common-day whale, uyguugyuguygguyguguygugug roamed the oceans beside irugeugoegoiegoehgooeooeuiii them.

waters. No, he’s not eating that. Same , just further away. I promise. ------> Plant life alive during this time

Many plants started dominating early earth during the Jurassic period. There were many gymnosperms, cycads, glossopteris, and cycadeoids. The Jurassic period is also known as the “Age of Cycads”. Major Events

Pangea kept breaking up during this time and more oceans and mountains formed. Many new sea animals came into existence, and new vegetation flourished. Many new, larger dinos came to be as well and thrived in this habitat. Herbivores were more abundant and one of the first early birds emerged, called the Archaeopteryx. Sources https://www.enchantedlearning.com/subjects/dinosaurs/mesozoic/jurassic/ https://www.livescience.com/28739-jurassic-period.html https://sciencing.com/climate-jurassic-era-4932.html https://socratic.org/questions/what-was-the-atmosphere-during-the-jurassic-period http://science.answers.com/Q/What_did_the_earth's_surface_look_like_in_the_jur assic_time_period https://www.reference.com/history/major-events-happened-during-jurassic-period- c7e574a5727b0ce4