Post by dinosauria101 on Aug 22, 2019 11:20:46 GMT 5
Hippopotamus gorgops
Hippopotamus gorgops ("Gorgon-eyed river horse") is an extinct species of hippopotamus. It first appeared in Africa during the late Miocene, and eventually migrated into Europe during the early Pliocene (where its fossils were first discovered). It became extinct prior to the Ice Age. With a length of 4.3 metres (14 ft), a shoulder height of 2.1 metres (6.9 ft), and a weight of 3.9 tons, H. gorgops was much larger than its living relative, H. amphibius. Another feature setting it apart from H. amphibius were its eyes. Modern hippos have eyes placed high on the skull, but H. gorgops took things a step further and had what could be described as short eye stalks, making it even easier for the creature to see its surroundings while (almost) fully under water.
Siats meekerorum
Siats is an extinct genus of large neovenatorid theropod dinosaur known from the Late Cretaceous Cedar Mountain Formation of Utah, USA. It contains a single species, Siats meekerorum. S. meekerorum is the first neovenatorid discovered in North America and represents the geologically youngest allosauroid yet discovered from the continent. The holotype came from a single immature individual, based on its incompletely fused neural arches to their centra in the vertebral column. The taxon is characterized by seven diagnostic (including four autapomorphies) features which include the broad neural spines on the dorsal vertebrae and the subtriangular crosssection of the distal caudal vertebrae, with the latter being an autapomorphy. The discovery of this neovenatorid also reveals that tyrannosauroids did not begin to dominate North America until the late cretaceous due to the presence of allosauroids such as Siats. Siats represents the third largest theropod from North America, after Acrocanthosaurus and Tyrannosaurus. Weight?? "At 24 feet (7.3 meters) long and weighing about 2.5 tons, the 80-million-year-old Lythronax (pronounced LYE-thro-nax) lacked the even-more-massive size of T. rex, says the University of Utah's Mark Loewen, who headed the team reporting the dinosaur's discovery in PLOS One." A adult would have presumably been larger.
NOTE: Siats was probably a tyrannosauroid instead of an allosauroid, and would've likely weighed about 6 tons as an adult
Credit to Wikipedia
Hippopotamus gorgops ("Gorgon-eyed river horse") is an extinct species of hippopotamus. It first appeared in Africa during the late Miocene, and eventually migrated into Europe during the early Pliocene (where its fossils were first discovered). It became extinct prior to the Ice Age. With a length of 4.3 metres (14 ft), a shoulder height of 2.1 metres (6.9 ft), and a weight of 3.9 tons, H. gorgops was much larger than its living relative, H. amphibius. Another feature setting it apart from H. amphibius were its eyes. Modern hippos have eyes placed high on the skull, but H. gorgops took things a step further and had what could be described as short eye stalks, making it even easier for the creature to see its surroundings while (almost) fully under water.
Siats meekerorum
Siats is an extinct genus of large neovenatorid theropod dinosaur known from the Late Cretaceous Cedar Mountain Formation of Utah, USA. It contains a single species, Siats meekerorum. S. meekerorum is the first neovenatorid discovered in North America and represents the geologically youngest allosauroid yet discovered from the continent. The holotype came from a single immature individual, based on its incompletely fused neural arches to their centra in the vertebral column. The taxon is characterized by seven diagnostic (including four autapomorphies) features which include the broad neural spines on the dorsal vertebrae and the subtriangular crosssection of the distal caudal vertebrae, with the latter being an autapomorphy. The discovery of this neovenatorid also reveals that tyrannosauroids did not begin to dominate North America until the late cretaceous due to the presence of allosauroids such as Siats. Siats represents the third largest theropod from North America, after Acrocanthosaurus and Tyrannosaurus. Weight?? "At 24 feet (7.3 meters) long and weighing about 2.5 tons, the 80-million-year-old Lythronax (pronounced LYE-thro-nax) lacked the even-more-massive size of T. rex, says the University of Utah's Mark Loewen, who headed the team reporting the dinosaur's discovery in PLOS One." A adult would have presumably been larger.
NOTE: Siats was probably a tyrannosauroid instead of an allosauroid, and would've likely weighed about 6 tons as an adult
Credit to Wikipedia