| Saurillodon Temporal range: Late Jurassic | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Squamata |
| Infraorder: | Scincomorpha |
| Genus: | † Saurillodon |
Saurillodon is a genus of prehistoric lizard of the Late Jurassic of Portugal, UK and Morrison Formation of Western North America. [1]
Present in stratigraphic zone 4. [2]
Stokesosaurus is a genus of small, carnivorous early tyrannosauroid theropod dinosaurs from the late Jurassic period of Utah, United States.
Enneabatrachus is an extinct genus of prehistoric frogs known from the late Jurassic Morrison Formation. It is represented by a single species, Enneabatrachus hechti, whose remains have been recovered from stratigraphic zone 5. One specimen has been recovered from Quarry 9 of Como Bluff in Wyoming and another specimen was later reported from Dinosaur National Monument. A small discoglossid frog whose name means "nine frog" after the quarry in which it was discovered. The Como Bluff specimen was an ilium only a few millimeters long. E. hechti's live weight would have only been a few grams.
Amphidon is an extinct genus of Late Jurassic mammal from the Morrison Formation. It is present in stratigraphic zone 5. The only species in the genus is Amphidon aequicrurius, found by Simpson in 1925.
Aploconodon is an extinct genus of Late Jurassic mammals belonging to the family Amphidontidae. It contains one species, A. comoensis.
Priacodon is an extinct genus of Late Jurassic eutriconodont mammal from the Alcobaça Formation of Portugal and the Morrison Formation of the midwestern United States. It is present in stratigraphic zones 4–6 of the latter. The genus contains four known species: Priacodon ferox, Priacodon fruitaensis, Priacodon lulli and Priacodon robustus.
Comodon is an extinct genus of Late Jurassic mammal from the Morrison Formation of Wyoming. Fossils of this taxon are present in stratigraphic zone 5.
Triconolestes is an extinct genus of Late Jurassic mammal from the Morrison Formation. Present in stratigraphic zones 4. It is possibly related to Volaticotherium, Argentoconodon, Ichthyoconodon and Jugulator, meaning it could possibly have been capable of gliding.
Amblotherium is an extinct genus of Late Jurassic and Early Cretaceous mammal. The type species Amblotherium pusillum is from the Lulworth Formation of southern England, while the referred species Amblotherium gracile is from stratigraphic zones 2, 3 and 5 of the Morrison Formation of the US.
Paurodon is an extinct genus of Late Jurassic mammal from the Morrison Formation of the Western United States.
Tathiodon is an extinct genus of Late Jurassic mammal from the Morrison Formation. Present in stratigraphic zone 5.
Dryolestes is an extinct genus of Late Jurassic mammal from the Morrison Formation and the Alcobaça Formation of Portugal. The type species Dryolestes priscus is present in stratigraphic zones 2, 5, and 6.
Comotherium is an extinct genus of Late Jurassic mammal from the Morrison Formation. Present in stratigraphic zone 5.
Euthlastus is an extinct genus of Late Jurassic mammal from the Morrison Formation. Present in stratigraphic zones 5 and 6. It is represented by only five upper molars.
Opisthias is a genus of sphenodont reptile. The type species, Opisthias rarus, is known from the Late Jurassic Morrison Formation of western North America, present in stratigraphic zones 2 and 4–6. A lower jaw is also known from the Berriasian aged Lulworth Formation of the United Kingdom, which appears to be distinct from the type North American species. Other remains are also known from the Late Jurassic of Portugal.
Theretairus is a Late Jurassic genus of sphenodont reptile from the Morrison Formation of western North America, present in stratigraphic zones 5 and 6.
Schillerosaurus was a genus of prehistoric lizard of the Late Jurassic Morrison Formation of Western North America.
Dorsetisaurus is a genus of extinct lizard, known from the Late Jurassic of North America, and the Late Jurassic-earliest Cretaceous of Europe. The genus was first reported from the Early Cretaceous (Berriasian) Lulworth Formation of the Purbeck Group of Durlston Bay, in Dorset. It has also been reported from the Late Jurassic aged Alcobaça Formation of Portugal and Morrison Formation of Western North America present in stratigraphic zones 2, 4, and 5. It is considered the oldest widely accepted member of Anguimorpha. based on the presence of 11 shared synapomorphies.
Parviraptor is a genus of stem-snake containing one species, Parviraptor estesi, from the Late Jurassic (Tithonian) or Early Cretaceous (Berriasian) Purbeck Limestone Formation of Dorset, England. A second species, Parviraptor gilmorei, was described from the Late Jurassic Morrison Formation of Western North America; it was present in stratigraphic zone 4. However, the second species was subsequently transferred to a separate genus Diablophis. An indeterminate species is known from the Bathonian aged Kirtlington Mammal Bed.
Dinehichnus is an ichnogenus found in the Morrison Formation that is attributed to dryosaurid dinosaurs. The trackways are present in Saltwash Member outcrops at Boundary Butte in southernmost Utah. Dinehichnus trackways are frequently found in groups, traveling parallel to one another. From this it can be inferred that the Dinehichnus trackmaker was a social animal. Dinehichnus tracks preserve impressions of three widely splayed toes on feet that point inwardly, as well as heel marks.
John Russell Foster is an American paleontologist. Foster has worked with dinosaur remains from the Late Jurassic of the Colorado Plateau and Rocky Mountains, as well as working on Cambrian age trilobite faunas in the southwest region of the American west. He named the crocodiliform trace fossil Hatcherichnus sanjuanensis in 1997 and identified the first known occurrence of the theropod trace fossil Hispanosauropusin North America in 2015.
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