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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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71 news items

Daily Mail

Daily Mail
Tue, 07 Oct 2014 16:18:13 -0700

Researchers from the University of Bristol and the Natural History Museum in London believe that multiple sauropod species survived in the same habitats because of their different diets. The Late Jurassic Morrison Formation - a distinctive sequence of ...

Natural History Museum

Khaleej Times
Wed, 15 Oct 2014 01:20:28 -0700

The four species lived in the Late Jurassic, a period about 161 to 145 million years ago that was a boom time for crocodylomorph evolution, but they were probably not contemporaries, the investigators said. The beasts would have feasted on turtles or ...

Science News for Students

Science News for Students
Mon, 27 Oct 2014 07:15:00 -0700

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. vertebrate The group of animals with a brain, two eyes, and a stiff nerve cord or backbone running down the ...
 
Huffington Post
Thu, 23 Oct 2014 11:00:00 -0700

The fossil -- of the pubic bone of another Late Jurassic dinosaur known as Allosaurus -- shows clear evidence of a brutal attack by a stegosaur, according to the scientists who have been studying it. Unearthed in Wyoming in 1999, the fossil seems to ...
 
News24
Wed, 15 Oct 2014 06:36:46 -0700

The four species lived in the Late Jurassic, a period about 161 to 145 million years ago that was a boom time for crocodylomorph evolution, but they were probably not contemporaries, the investigators said. The beasts would have feasted on turtles or ...
 
The Japan Times
Wed, 15 Oct 2014 21:41:15 -0700

The four species lived in the Late Jurassic, a period about 161 to 145 million years ago that was a boom time for crocodylomorph evolution, but they were probably not contemporaries, the investigators said. The beasts would have feasted on turtles or ...

Nature World News

Nature World News
Tue, 21 Oct 2014 11:56:15 -0700

The victim in question was a predatory allosaur, a big, mean, killing machine that reigned supreme during the late Jurassic period, according to BBC Nature. Even weighing on average four tons and measuring 12 meters in length, one of these dangerous ...

Moab Times Independent

Moab Times Independent
Thu, 16 Oct 2014 09:52:30 -0700

The museum is also displaying the real pelvis and tail of a Camarasaurus, a 40-foot-long plant eater that lived in what is now the Moab area during the Late Jurassic epoch (about 145 million years ago), track imprints of dinosaurs, the cast hind leg of ...
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