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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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Dinosaur Safari (Late Jurassic) Clip #1: Opthalmosaurus

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Dinosaur Safari (Late Jurassic) Clip #9: Brachiosaurus

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Dinosaur Safari (Late Jurassic) Clip #5: Pterodactylus

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69 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 ...

The Weather Network

The Weather Network
Wed, 22 Oct 2014 10:14:33 -0700

Uncovering the bones of an allosaur - a predator dinosaur from the late Jurassic period - he and his team found evidence of an ancient fight that very likely claimed this dino's life. When examining the animal's fossilized pelvis, they noticed a ...

Discovery News

Discovery News
Tue, 21 Oct 2014 15:52:30 -0700

This leaproach (Altoblattella montistabularis) is a new type of cockroach with modified rear legs that gives it jumping ability on par with a grasshopper. Although jumping cockroaches existed during the Late Jurassic, they had previously not been found ...

Phys.Org

Phys.Org
Tue, 14 Oct 2014 22:57:36 -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 ...

Colorado Springs Gazette

Colorado Springs Gazette
Thu, 16 Oct 2014 06:54:25 -0700

Delays were a source of quips, but they are a drop in the bucket compared with the eons that have passed since the Marsh Quarry dinosaurs' late Jurassic Period heyday. It was between 146 million and 154 million years ago that dinosaurs such as the ...

National Geographic

National Geographic
Mon, 29 Sep 2014 17:49:48 -0700

What's odd is that Alligatorellus weren't the only cute little crocs running around in Late Jurassic Europe. The same deposits have yielded other, closely-related animals named Atoposaurus and Alligatorium. Stranger still, the species of Atoposaurus ...

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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