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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.

46 news items

Leicester Mercury

Leicester Mercury
Wed, 17 Sep 2014 05:00:00 -0700

Dr Evans said: “It was a marine crocodile which lived during the Late Jurassic - about 145 to 155 million years ago. “This fits the suggested age of the 'skull', but I don't know what the basis for this is, not being familiar with Siberian geology ...
 
LiveScience.com
Tue, 16 Sep 2014 03:41:15 -0700

A group of scientists reports they found traces of scavenging on the bones from a fossilized "ichthyosaur fall" of the Late Jurassic Period. This 10-foot-long (3 meters) specimen was discovered during the construction of a road in 1991 in Dorset, England.
 
Discovery News
Mon, 15 Sep 2014 08:00:00 -0700

... from childhood toys and films like Jurassic Park, many dinosaurs in fact more closely resembled birds, kind of like this recently discovered little guy, Eosinopteryx brevipenna, a flightless theropod dinosaur that roamed China during the Middle ...

Phys.Org

Phys.Org
Mon, 15 Sep 2014 05:40:03 -0700

However, the prolific Middle to Late Jurassic Daohugou and Early Cretaceous Jehol deposits in northeastern China are unique in the global fossil record in that they have yielded in some cases hundreds of specimens of a single taxon, most of which are ...
 
Discovery News
Wed, 20 Aug 2014 12:40:35 -0700

... from childhood toys and films like Jurassic Park, many dinosaurs in fact more closely resembled birds, kind of like this recently discovered little guy, Eosinopteryx brevipenna, a flightless theropod dinosaur that roamed China during the Middle ...
 
GuruFocus.com
Mon, 15 Sep 2014 15:18:45 -0700

The Vaca Muerta Shale is a continuous tight oil and shale gas reservoir of late Jurassic (Tithonian) and early Cretaceous (Berriasian) age formation. The formation covers a total area of 30,000 square kilometres. The shale is at a depth of about 9,500 ...
 
Discovery News
Wed, 10 Sep 2014 14:08:20 -0700

... from childhood toys and films like Jurassic Park, many dinosaurs in fact more closely resembled birds, kind of like this recently discovered little guy, Eosinopteryx brevipenna, a flightless theropod dinosaur that roamed China during the Middle ...
 
Moab Times Independent
Thu, 11 Sep 2014 08:56:15 -0700

While footprints of other three-toed sauropods are a familiar sight around Moab, there are no obvious signs that the creature known as Dystrophaeus once roamed the area during the Late Jurassic Era. But famed geologist and paleontologist John Strong ...
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