Episode 437: The primary long-necked dinosaur. Even earlier than Macrocollum and Plateosaurus there was one other sauropodomorph that already had a protracted neck; Plus titanosaurs with injured tails; And David & Will be a part of to debate when dinosaurs advanced hole bones
Information:
- The oldest “long-necked” dinosaur was recognized from new materials in Southern Brazil supply
- Two titanosaurs in Gondwana had accidents of their tails supply
- Totally different dinosaur teams could have independently advanced pneumaticity (hole bones) supply
Interview:
David and Will, paleontologists, science communicators, and the podcasters behind Widespread Descent, which is all in regards to the fascinating variety of life, previous and current. In addition they have a patreon at patreon.com/commondescentpodcast
Sponsors:
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The dinosaur of the day: Sinotyrannus
- Basal tyrannosauroid that lived within the Early Cretaceous in what’s now Liaoning Province, China (Jiufotang Formation)
- A part of Proceratosauridae, a household that began within the Jurassic and lived in what’s now Europe and Asia
- Appeared considerably much like Yutyrannus
- Massive theropod, walked on two legs, had an elongated head, lengthy tail, and sharp enamel and claws
- Could have had a tall nasal crest, like different proceratosaurids
- In paleoart, typically depicted as feathery
- Estimated to be about 29.5 to 33 ft (9 to 10 m) lengthy and weigh about 1.5 tons
- Related in dimension to later giant tyrannosaurs (from the Late Cretaceous)
- Largest identified theropod from the Jiufotang Formation
- First giant theropod identified from the Jehol Biota
- Cranium about 3.3 ft (1 m) lengthy
- Had giant nostrils, one in all its distinctive options
- Had a “huge and really tall” neural backbone that “is primarily vertical”, based on the paper describing the dinosaur
- Kind species is Sinotyrannus kazuoensis
- Genus title means “Chinese language tyrant”
- Genus title Sino is an historical title of China
- Species title refers to Kazuo, the county the place the fossils had been discovered
- Described in 2009 by Ji Qiang and others
- Discovered an incomplete, disarticulated skeleton together with components of the cranium and jaws, some enamel, a part of the pelvis, some ribs, vertebrae, and different fragments
- Initially thought to presumably be the earliest member of the household Tyrannosauridae, and assist present that tyrannosaurids could have originated in what’s now East Asia within the Early Cretaceous after which later unfold to North America
- Later, was discovered to be a proceratosaurid tyrannosauroid
- Nevertheless, helped present that tyrannosauroids had been giant within the Early Cretaceous, and never simply the Late Cretaceous
- In 2016, Steve Brusatte and Thomas Carr, in a paper in regards to the phylogeny and evolutionary historical past of tyrannosauroids, discovered Sinotyrannus to be a sister taxon of Yutyrannus, and never shut kinfolk of Tyrannosaurus or Albertosaurus
- Had a extra shallow, much less sturdy cranium than Tyrannosaurus, and smaller jaw muscle groups and thinner enamel
- In response to Brusatte and Carr, “With its gaudy midline cranium crest, large exterior naris and proportionally lengthy arms, Yutyrannus (and doubtless Sinotyrannus) resemble overgrown variations of Guanlong, not proto-tyrannosaurids”
- Although Sinotyrannus and Yutyrannus had been on the massive facet, particularly for the Early Cretaceous, Brusatte and Carr stated “colossal dimension (>10 metres in physique size, >1.5 tons in mass) got here a lot later, first showing within the Campanian, ca. 80 million years in the past, though this statement might be clouded by sampling biases”
Enjoyable Truth:
The Late Triassic is a lot of the Triassic.
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