The cliff forming Purbeck limestone from the Upper Jurassic at Bat's Head, Dorset, UK. Bat's Head is a Chalk headland on the Dorset coast in southern England, located between Durdle Door to the east and White Dorset ( (or archaically, Dorsetshire) is a county in South West England on the English Channel coast The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom, the UK or Britain,is a Sovereign state located

The Late Jurassic (or Malm) Epoch of the Jurassic Period is the unit of geologic time from 161. The Jurassic is a geologic period and system that extends from about Ma (million years ago to  Ma that is from the end of the Triassic to the beginning The geologic time scale is a chronologic schema (or idealized Model) relating Stratigraphy to time that is used by Geologists and other 2 ± 4. 0 to 145. 5 ± 4. 0 million years ago, which is preserved in Upper Jurassic strata. Annum is one form of the Latin noun meaning Year, not a form normally used for derivatives in modern languages the accusative singular In Geology and related fields a stratum (plural strata) is a layer of rock or Soil with internally consistent characteristics that distinguishes ^[1]

Subdivisions

The Late Jurassic is divided into three ages, which correspond with the three (faunal) stages of Upper Jurassic rock:

Paleogeography

Pangaea broke up into two supercontinents, Laurasia to the north, and Gondwana to the south. Pangaea, Pangæa or Pangea (pænˈdʒiːə from παν pan, meaning entire, and Γαῖα Gaea, meaning Earth in In Geology, a supercontinent is a Landmass comprising more than one Continental core or Craton. Laurasia (lɔˈreɪʃiə lɔˈreɪʒə was a Supercontinent that most recently existed as a part of the split of the Pangaean supercontinent in the late Mesozoic Gondwana (ɡɒnˈdwɑːnə originally Gondwanaland) was a southern Supercontinent that existed about 500 to 200 Ma ago The result of this break-up was the spawning of Atlantic Ocean. However, at this time, the Atlantic Ocean was relatively narrow.

Life

This period was 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 Jurrassic. Here are only a few of the many Jurrassic animals:

• • Camarasaurus a large herbivorous sauropod dinosaur from North America. Camarasaurus (ˌkæmərəˈsɔrəs KAM-uh-ruh-SAWR-us meaning 'chambered lizard' referring to the holes in its Vertebrae ( Greek καμαρα
  • Brachiosaurus a large herbivorous sauropod dinosaur from North America. Brachiosaurus (ˌbrækiəˈsɔrəs meaning "arm lizard" from the Greek brachion /βραχιων meaning "arm" and sauros
  • Diplodocus a large herbivorous sauropod dinosaur from North America. Diplodocus (dɪˈplɒdəkəs /daɪˈplɒdəkəs/ Diplodocus is among the most easily identifiable dinosaurs with its classic dinosaur shape long neck
  • Supersaurus possibly the largest North American sauropod of them all. Supersaurus (meaning "super lizard" is a Genus of Diplodocid Sauropod Dinosaur discovered in the Upper Jurassic
  • Dicraeosaurus a large herbivorous sauropod dinosaur from Africa. Dicraeosaurus (Gr dikraios "bifurcated double-headed" + Gr
  • Giraffititan another large sauropod from Africa (usually recognized as a species of Brachiosaurus. Brachiosaurus (ˌbrækiəˈsɔrəs meaning "arm lizard" from the Greek brachion /βραχιων meaning "arm" and sauros
  • Allosaurus the most common late Jurassic/early Cretaceous theropod of North America. Allosaurus (ˌæləˈsɔrəs is a Genus of large Theropod Dinosaur that lived 155 to 145 million years ago in the Late Jurassic
  • Epanterias the largest Jurassic carnivore of all, from North America. Epanterias is a Genus of theropod Dinosaur from the Kimmeridgian - Tithonian -age Upper Jurassic Morrison
  • Ceratosaurus a medium sized Jurassic carnivore of North America and Africa. Ceratosaurus (ˌsɛrətəˈsɔrəs meaning 'horned lizard' in reference to the horn on its nose ( Greek κερας/κερατος keras/keratos meaning
  • Compsognathus a small theropod from Europe. Compsognathus ( Greek kompsos/κομψος; "elegant" "refined" or "dainty" and gnathos/γναθος; "jaw"
  • Yangchuanosaurus a large theropod from Asia. Yangchuanosaurus was a Theropod Dinosaur that lived in China during the Late Jurassic period, and was similar in size and appearance
  • Tuojiangosaurus a thyreophoran from Asia. Tuojiangosaurus (meaning ' Tuo River lizard' is a Genus of Stegosaurid Dinosaur from the Late Jurassic Period
  • Stegosaurus a North American thyreophoran. Stegosaurus (ˌstɛgəˈsɔrəs is a Genus of stegosaurid armoured Dinosaur from the Late Jurassic period (
  • Dryosaurus a North American ornithopod. Dryosaurus (ˌdraɪoʊˈsɔrəs DRY-oh-SAWR-us meaning 'oak lizard' due to the vague oak shape of its cheek teeth ( Greek δρυο/dryo
  • Camptosaurus another ornithopod from North America. Camptosaurus (ˌkæmptəˈsɔrəs KAMP-to-SAWR-us is a Genus of plant-eating beaked Dinosaurs of the Late Jurassic and Early Cretaceous
  • Gargoyleosaurus a thyreophoran from North America. Gargoyleosaurus (meaning " Gargoyle lizard" is both the smallest and the earliest well-known Ankylosaur.
  • Archaeopteryx the first known bird, from Europe. Archaeopteryx, sometimes referred to by its German name Urvogel ("original bird" or "first bird" is the earliest and most primitive Bird
  • Rhamphorhynchus a flying pterosaur from Europe. Rhamphorhynchus (ˌræmfəˈrɪŋkəs was a long-tailed Pterosaur of the Jurassic period
  • Ophthalmosaurus a very common sea-going ichthyosaur from what is now Europe and North America. Ophthalmosaurus (meaning “eye lizard” in Greek was an Ichthyosaur of the Middle to Late Jurassic period (165 to 145 million years ago
  • Liopleurodon a very large sea-going pliosaur from what is now Europe. Liopleurodon (ˌliːoʊˈplʊrədɑn meaning 'smooth-sided teeth' is a genus of large carnivorous Marine reptile belonging to the Pliosauroidea
  • Pterodactylus a flying pterosaur from Europe. Pterodactylus (ˌtɛrəˈdæktɨləs TER-o-DACK-ti-lus) is a Genus of Pterosaur (the first to be named and identified as a flying reptile that

References

• Owen, Donald E. (March 1987). "Commentary: Usage of Stratigraphic Terminology in Papers, Illustrations, and Talks". Journal of Sedimentary Petrology 57 (2): 363–372.   Reproduced here.
• Kazlev, M. Alan (2002-06-28). See also 2002 (disambiguation Year 2002 ( MMII) was a Common year starting on Tuesday of the Gregorian calendar. Events 1098 - Fighters of the First Crusade defeat Kerbogha of Mosul. Late Jurassic — The Malm Epoch: The Acme of the Dinosaurs. Palæos. Retrieved on 2007-04-11. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 491 - Flavius Anastasius becomes Byzantine Emperor, with the name of Anastasius I.