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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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743 news items

Edmonton Sun

Edmonton Sun
Wed, 28 Jan 2015 09:48:45 -0800

The 'dragon of Qijianglong' -- named due to the find near Qijiang City -- is about 15 metres in length and lived about 160 million years ago in the Late Jurassic. The fossil site was found by construction workers in 2006, and the digging eventually hit ...

International Business Times AU

International Business Times AU
Mon, 29 Dec 2014 17:33:04 -0800

The dinosaur was found in North America during the Late Jurassic period, which was 155-1 50 million years ago. It is 8.5 m. long and weighs 5,000 kg. More dinosaurs and other features of the park are yet to be unlocked in the "Jurassic World" website.

Telegraph.co.uk

Telegraph.co.uk
Sun, 11 Jan 2015 22:02:01 -0800

Lexovisaurus was one of the first dinosaurs from mid-to-Late Jurassic Europe, 164.7 mya to be discovered. It was a stegosaur. Its fossils have been found in England and France. Lexovisaurus is known only from postcranial remains, so the shape of the ...
 
Science Recorder
Wed, 21 Jan 2015 15:26:15 -0800

... descendant of long-extinct creatures that were ancestors to sharks and rays, also known as elasmobranchs. It belongs to one of the oldest shark lineages known to man, dating to the Late Cretaceous period, and possibly even to the Late Jurassic ...
 
Energy Voice
Fri, 16 Jan 2015 03:29:21 -0800

The company said the well had encountered a total of 77metres of the target Early Cretaceious Elevala and Toro Sandstones and Late Jurassic Kimu sandstones. It said pressure measurements and sampling were taken in the key prospective zones, followed ...
 
Columbus Dispatch
Sun, 04 Jan 2015 05:28:52 -0800

Sometime in the late Jurassic, about 160 million years ago, a 10-foot-long ichthyosaur died of unknown causes and fell to the bottom of a shallow sea that covered what is now southern Great Britain. Opportunistic scavengers appeared, including sharks ...

Phys.Org

Phys.Org
Tue, 07 Oct 2014 16:10:06 -0700

Despite this, multiple sauropod species often lived alongside each other. The most notable example is the community of the Late Jurassic Morrison Formation, a distinctive sequence of sedimentary rock in the western United States from which over 10 ...
 
LiveScience.com
Mon, 15 Apr 2013 17:05:40 -0700

The Jurassic Period was the second segment of the Mesozoic Era. It occurred from 199.6 to 145.5 million years ago, following the Triassic Period and preceding the Cretaceous Period. During the Jurassic Period, the supercontinent Pangaea split apart.
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