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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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888 news items

Helena Independent Record

Helena Independent Record
Mon, 06 Jul 2015 04:06:32 -0700

The formation dates back 150 million to 160 million years ago to the late Jurassic age — the time of dinosaurs. Back then, this area of Montana was an inland sea. The Swift formation represents the last “major regression of the Sundance Sea ...

National Geographic

National Geographic
Fri, 26 Jun 2015 07:08:42 -0700

Jim Kirkland and Ken Carpenter named it Mymoorapelta maysi, and, along with a later find dubbed Gargoyleosaurus, the dinosaur pushed the age of North American ankylosaurs back into the Late Jurassic. Once paleontologists knew what to look for, ...
 
NJ.com
Thu, 11 Jun 2015 07:12:49 -0700

The latest "Jurassic Park" installment, Jurassic World, will undoubtedly drive hordes of humans to movie theaters this weekend. But how much do we really know about the stars of the film at large — the dinosaurs? And we're not just talking the big ...

EarthSky

EarthSky
Mon, 15 Jun 2015 05:11:15 -0700

Similarly, Late Jurassic dinosaur bones from nearly 150 million years ago hold the traces of carcass-eating insects. Dung beetles cleaned up after the dinosaurs. Image credit: Kay-africa/Wikimedia Commons. This makes sense: wastes, bodies and other ...

The Guardian (blog)

The Guardian (blog)
Sat, 13 Jun 2015 01:00:09 -0700

We know from fossil burrows in dinosaur coprolites (fossil feces) that dung beetles fed on dinosaur droppings at least 75 million years ago. Similarly, Late Jurassic dinosaur bones from nearly 150 million years ago hold the traces of carcass-eating ...

Nerdvana (blog)

Nerdvana (blog)
Fri, 12 Jun 2015 07:37:30 -0700

And there are some thrilling sequences in this film that are easily worth the price of admission, including a couple that are Jaws-like horrific, so I think that even (the late Jurassic Park author) Michael Crichton would give a pass on many of its ...

Shropshire Tourism

Shropshire Tourism
Mon, 06 Jul 2015 01:26:15 -0700

Only 11 specimens of this famous 'missing link' have ever been found, and they all originate from the late Jurassic Solnhofen Limestone of Germany, a lagerstätten, or rock showing fossils with exceptional preservation. The fine-grained rocks preserve ...
 
Paris News
Tue, 30 Jun 2015 08:22:30 -0700

At the beginning of the Jurassic period, the Earth's continents were still jammed together, forming the super-continent Pangaea. By the late Jurassic period, huge dinosaurs such as Stegosaurus, Ceratosaurus, Brachiosaurus and Allosaurus walked the ...
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