Definitions for Jurassic Period
juras·sic pe·ri·od

Princeton's WordNetRate this definition:0.0 / 0 votes

1. Jurassic, Jurassic periodnoun

   from 190 million to 135 million years ago; dinosaurs; conifers

WikipediaRate this definition:0.0 / 0 votes

1. jurassic period

   The Jurassic ( juu-RASS-ik) is a geologic period and stratigraphic system that spanned from the end of the Triassic Period 201.4 million years ago (Mya) to the beginning of the Cretaceous Period, approximately 145 Mya. The Jurassic constitutes the middle period of the Mesozoic Era and is named after the Jura Mountains, where limestone strata from the period were first identified. The start of the Jurassic was marked by the major Triassic–Jurassic extinction event, associated with the eruption of the Central Atlantic Magmatic Province. The beginning of the Toarcian Stage started around 183 million years ago and is marked by the Toarcian Oceanic Anoxic Event, a global episode of oceanic anoxia, ocean acidification, and elevated temperatures associated with extinctions, likely caused by the eruption of the Karoo-Ferrar large igneous provinces. The end of the Jurassic, however, has no clear boundary with the Cretaceous and is the only boundary between geological periods to remain formally undefined. By the beginning of the Jurassic, the supercontinent Pangaea had begun rifting into two landmasses: Laurasia to the north and Gondwana to the south. The climate of the Jurassic was warmer than the present, and there were no ice caps. Forests grew close to the poles, with large arid expanses in the lower latitudes. On land, the fauna transitioned from the Triassic fauna, dominated jointly by dinosauromorph and pseudosuchian archosaurs, to one dominated by dinosaurs alone. The first birds appeared during the Jurassic, evolving from a branch of theropod dinosaurs. Other major events include the appearance of the earliest lizards and the evolution of therian mammals. Crocodylomorphs made the transition from a terrestrial to an aquatic life. The oceans were inhabited by marine reptiles such as ichthyosaurs and plesiosaurs, while pterosaurs were the dominant flying vertebrates. The first sharks, rays and crabs also first appeared during the period.

ChatGPTRate this definition:0.0 / 0 votes

1. jurassic period

   The Jurassic Period is one of the major geological time periods, occurring approximately 201 to 145 million years ago during the Mesozoic Era. This period is known for its significant changes in climate and geography, along with the evolution and diversification of dinosaurs. It also saw the development of the first birds and mammals, as well as the expansion of coniferous forests. The name "Jurassic" comes from the Jura Mountains, where rocks from this period were first identified.

Editors ContributionRate this definition:0.0 / 0 votes

1. Jurassic Period

   The Jurassic was a geologic period and system that spanned 56 million years from the end of the Triassic Period 201.3 million years ago (Mya) to the beginning of the Cretaceous Period 145 Mya.[note 1] The Jurassic constituted the middle period of the Mesozoic Era, also known as the Age of Reptiles.

   
   

   Submitted by anonymous on June 10, 2018  

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1. • Period

How to pronounce Jurassic Period?

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How to say Jurassic Period in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of Jurassic Period in Chaldean Numerology is: 2

2. Pythagorean Numerology

   The numerical value of Jurassic Period in Pythagorean Numerology is: 5

Examples of Jurassic Period in a Sentence

1. George Poinar Jr.:

   Grasses probably go back to the Early Cretaceous Period and possibly even the Jurassic Period.

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=Jurassic Period
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Jurassic_Period
3. ^ ChatGPT
   https://chat.openai.com