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System/
Period
Series/
Epoch
Stage/
Age
Age (Ma)
Cretaceous Lower/
Early
Berriasian younger
Jurassic Upper/
Late
Tithonian 145.0–152.1
Kimmeridgian 152.1–157.3
Oxfordian 157.3–163.5
Mid/
Middle
Callovian 163.5–166.1
Bathonian 166.1–168.3
Bajocian 168.3–170.3
Aalenian 170.3–174.1
Lower/
Early
Toarcian 174.1–182.7
Pliensbachian 182.7–190.8
Sinemurian 190.8–199.3
Hettangian 199.3–201.3
Triassic Upper/
Late
Rhaetian older
Subdivision of the Jurassic system
according to the IUGS, as of July 2012.

The Late Jurassic is the third epoch of the Jurassic period, and it spans the geologic time from 161.2 ± 4.0 to 145.5 ± 4.0 million years ago (Ma), which is preserved in Upper Jurassic strata.[1] In European lithostratigraphy, the name "Malm" indicates rocks of Late Jurassic age. In the past, this name was also used to indicate the unit of geological time, but this usage is now discouraged to make a clear distinction between lithostratigraphic and geochronologic/chronostratigraphic units.

Subdivisions[edit]

The Late Jurassic is divided into three ages, which correspond with the three (faunal) stages of Upper Jurassic rock:

  Tithonian (150.8 ± 4.0 – 145.5 ± 4.0 Ma)
  Kimmeridgian (155.7 ± 4.0 – 150.8 ± 4.0 Ma)
  Oxfordian (161.2 ± 4.0 – 155.7 ± 4.0 Ma)

Paleogeography[edit]

During the Late Jurassic epoch, Pangaea broke up into two supercontinents, Laurasia to the north, and Gondwana to the south. The result of this break-up was the spawning of the Atlantic Ocean. However, at this time, the Atlantic Ocean was relatively narrow.

Life forms of the epoch[edit]

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 crocodiles and the first birds, appeared in the Jurassic. Listed here are only a few of the many Jurassic animals:

References[edit]

  1. ^ Owen 1987.
Jurassic Period
Lower/Early Jurassic Middle Jurassic Upper/Late Jurassic
Hettangian | Sinemurian
Pliensbachian | Toarcian
Aalenian | Bajocian
Bathonian | Callovian
Oxfordian | Kimmeridgian
Tithonian

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Late_Jurassic — Please support Wikipedia.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.
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755 news items

International Business Times AU

International Business Times AU
Mon, 15 Dec 2014 20:18:45 -0800

The Apatosaurus walked the earth during the Late Jurassic period. It is about 65 to 91 feet long and weighs about 18,000 kg. The dinosaur is herbivorous that eats tree leaves and ferns and lives in herds. The dinosaurs were seen in the trailer of the ...

National Geographic

National Geographic
Mon, 22 Dec 2014 11:30:00 -0800

The first birds evolved in the Late Jurassic, roundabout 150 million years ago, and they became a widespread and successful branch of the dinosaur family tree. The trouble is finding those birds. They were often so small and so delicate that their ...

The Earth Times

The Earth Times
Thu, 18 Dec 2014 03:42:15 -0800

These developed fundamental lines of mammals such as the monotremes, but during the Cretaceous, in Asia, we finally had some therians, about 180 million years ago. The Late Jurassic had one Chinese eutherian called Juramaia, helping us to date when ...

Science News for Students

Science News for Students
Fri, 12 Dec 2014 05:40:43 -0800

The best known: Stegosaurus, a 6-meter (20-foot) long creature from the late Jurassic that lumbered around the Earth some 150 million years ago. tetrapod A four-limbed animal, including amphibians, reptiles, birds and mammals. tyrannosaur A line of ...

moviepilot.com

moviepilot.com
Thu, 18 Dec 2014 08:17:22 -0800

... the Jurassic Period and Cretaceous Period). Apatosaurus (Littlefoot) and Stegosaurus (Spike) existed in the late Jurassic period, while Triceratops (Cera), Pteranodon (Petrie), Saurolophus (Ducky) and Tyrannosaurus existed in the late Cretaceous ...

Science News

Science News
Mon, 15 Dec 2014 11:00:47 -0800

It might have been the biggest predator to stalk through Europe during the late Jurassic period, 161 million to 145 million years ago (SN Online: 3/6/14). Though these big dinos evoke Godzilla, people can probably dump the popular image of dinosaurs as ...

The Guardian

The Guardian
Sun, 14 Dec 2014 06:44:13 -0800

Stegosaurus are mini-bus sized herbivorous dinosaurs that lived roughly 150 million years ago in the late Jurassic period. Four species are known. They lived in semi-arid regions of what is now North America, and ate a variety of plants like cycads ...
 
Rigzone (registration)
Thu, 04 Dec 2014 17:52:30 -0800

Nama-1 is located 12.4 miles (20 kilometers) due east of the Stanley Development, in which all wells found condensate-rich gas in the Late Jurassic Kimu and Early Cretaceous Toro Sandstones. If successful, the Nama prospect has the potential to be ...
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