Episode 466: Dinosaur films: classics, consulting, and a brand new premiere. Steve Brusatte introduced on consulting for Jurassic World: Dominion, Movie critic and historian Charles Solomon talked about influential dinosaur animations, Why Dinosaurs? is premiering this weekend, plus information from SVP 2023
Information:
- Steve Brusatte shared his expertise being the paleontology advisor for Jurassic World: Dominion supply
- Internationally revered critic and historian of animation Charles Solomon talked about animation and paleontology in movie together with “From the Large Bang to Tuesday Morning” supply
- A panel of scientists mentioned colonialism in vertebrae paleontology supply
- The attribute dinosaur dying pose is barely repeatedly seen in non-avian theropods supply
- A brand new Triceratops specimen appears to have “rhizoetching” hint fossils from plant roots and/or fungus supply
- A femur from an apatosaurine (presumably Apatosaurus) appears to have a brand new pathology referred to as osteochondritis dissecans supply
- Why Dinosaurs? is premiering in Hollywood supply
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The dinosaur of the day: Camposaurus
- Coelophysid dinosaur that lived within the Late Triassic in what’s now Arizona, U.S. (Placerias Quarry, Bluewater Creek Formation)
- To not be confused with Camptosaurus, a a lot (most likely) bigger dinosaur that had a beak and ate crops
- Small and carnivorous
- Not sufficient fossils discovered to estimate its dimension
- Fossils discovered embody decrease leg bones and different fragments
- Regarded just like Coelophysis
- Based mostly on Coelophysis, would have walked on two legs, had shorter arms, a protracted tail, a protracted neck, and elongated head, and would have been slender
- Could have gone after small lizards or small, younger, dinosaurs
- Kind species is Camposaurus arizonensis
- Named in 1998 by Adrian Hunt and others
- Genus title means “Camp’s lizard”
- Named after Charles Lewis Camp, who excavated the fossils
- Species title refers to Arizona, the place it was discovered
- Holotype present in 1934
- Many fossils have been included as paratypes when it was named (together with extra elements of the legs and ankles, a part of a sacrum and vertebrae), however not everybody agrees with these fossils being Camposaurus as a result of they have been from a big bonebed and though they have been discovered close to the holotype, laborious to know they’re the identical dinosaur
- Named as a result of it had tarsals fused to the tibia and fibula and particulars within the ankle bone (astragalus)
- For some time regarded as a junior synonym of Coelophysis
- Coated Coelophysis in episode 204
- Alex Downs in 2000 discovered it to be a junior synonym of Coelophysis as a result of it had plenty of similarities to the Coelophysis specimens discovered on Ghost Ranch in New Mexico
- Wrote that it “seems to fall simply inside the vary of variation”
- In 2007 Sterling Nesbitt and others additionally discovered Camposaurus to be a synonym of Coelophysis, primarily based on its ankle bone being straight and searching the identical as that of Coelophysis bauri
- Some paleontologists thought of it a nomen dubium as a result of not sufficient fossils discovered
- Martin Ezcurra and Steve Brusatte re-examined the holotype of Camposaurus and in 2011 discovered it had two distinct options, which meant it was legitimate
- Options within the shinbone (tibia) and ankle bone (astragalus)
- Has a definite ridge on the tibia, the place it varieties a joint with the fibula, and doesn’t have a knob on the ankle
- Additionally discovered Camposaurus to be carefully associated to Megapnosaurus, as a result of they’ve similarities within the leg and ankle
- Coated Megapnosaurus in episode 456
- In 2017, Ezcurra discovered Camposaurus to be in a clade with Megapnosaurus, Segisaurus, and (later) Lucianovenator
- Lived within the early to center Norian (Norian is from ~227 to 208.5 mya)
- Considered the oldest identified neotheropod, or at the least one of many oldest
- Neotheropods embody coelophysoids and extra superior theropods, and are the one theropods that survived the Triassic-Jurassic extinction occasion. Group contains dinosaurs corresponding to Cryolophosaurus (from Antarctica), Dilophosaurus, Sinosaurus, and extra
- Being the oldest or one of many oldest neotheropods means there are lengthy ghost lineages
- Different animals that lived across the identical time and place embody the phytosaur Rutiodon (phytosaurs have been giant, principally semiaquatic reptiles, Rutiodon had a protracted snout stuffed with sharp enamel), aetosaurs corresponding to Desmatosuchus and Stagonolepis (aetosaurs have been closely armored reptiles, and Desmatosuchus had shoulder spikes) and the metoposaurid Anaschisma (giant amphibian that had giant jaws and ambushed prey)
Enjoyable Truth:
Dinosaurs typically steal mammal hair & fur to enhance their nests.
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