Episode 258 is all about Anserimimus, The “goose mimic” from the Gobi Desert.
We additionally interview Karen Chin, Affiliate Professor of Geological Sciences on the College of Colorado Boulder and Curator of Paleontology on the College of Colorado Museum of Pure Historical past, and she or he’s an skilled in coprolites. Try a video of her work right here if you wish to see extra.
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On this episode, we focus on:
Information:
- Information from the third day of talks on the 2019 assembly of the Society of Vertebrate Paleontology supply
- Dinosaurs had many various cranium, jaw muscle, and mind sizes, however we are able to solely simply research the small group that survived the mass extinction
- Through the use of evo-devo we are able to now see how precisely chicken skulls type round their brains
- Non-avian Dinosaurs shortly developed many various skulls and jaws, however they don’t at all times replicate their feeding methods
- We don’t see proof of dinosaurs earlier than the Carnian Pluvial Occasion, however fossil localities are restricted
- A brand new statistical method might make it simpler to separate female and male dinosaur fossils
- Some quadrupedal dinosaurs had a lot bigger hindfeet than front-feet, however the reason being nonetheless unclear
- Massospondylus had very versatile development charges, probably indicating it was a “restoration taxa” profiting from the top Triassic extinction
- New Triceratops excavations discovered uncommon stays past simply the cranium, permitting us to measure how they modified as they grew
- Late cretaceous ceratopsian brains modified form to permit for the large neck muscular tissues they wanted to carry up their head
- Australia has one of the best ankylosaurs from Gondwana together with the brand new “Julia Creek” specimen
- A brand new, bigger, Liaoningosaurus fossil was discovered by a farmer in China
- Microstructure of pachycephalosaur domes might present that they did however heads
- In Casper, Wyoming, the Tate Geological Museum now has Nicole the Torosaurus on show supply
- The Pure Historical past Museum in London is taking scholar purposes to review ceratopsian phylogeny supply
- Austria is releasing a set of 12 glow at the hours of darkness 3-euro dinosaur cash supply
- Mattel Movies is partnering with Daniel Kaluuya’s manufacturing firm to make a reside motion Barney the dinosaur film supply
- Jurassic World 3 will star DeWanda Smart and Mamoudou Athie, and can deliver again characters Ian Malcolm, Ellie Sattler, and Alan Grant will likely be within the movie supply
The dinosaur of the day: Anserimimus
- Ornithomimid theropod that lived within the Late Cretaceous in what’s now Mongolia
- Genus title means “goose mimic”
- Named in 1988 by Rinchen Barsbold
- Anser is the generic title for some species of geese
- Sort and solely species is Anserimimus planinychus
- Doesn’t notably appear like a goose, however different ornithomimosaurs have been named after different birds
- Species title means “flat claw” and refers to its flattened claws
- Just one specimen, which is a fairly full, articulated skeleton (no cranium and decrease jaws)
- Discovered within the Gobi Desert within the Seventies on a joint Soviet-Mongolian expedition
- Estimated to be about 9.8 ft (3 m) lengthy and weigh 110 lb (50 kg)
- Probably an omnivore
- Most likely appeared just like different ornithomimids, however with extra highly effective forelimbs
- Had lengthy, highly effective forelimbs
- Had massive crests on the higher arm bones, to connect to massive arm muscular tissues, like biceps
- Had lengthy, straight (with a slight curve) claws on the hand, that have been fairly flat on the decrease floor
- Not clear why it had such highly effective arms. Doable it was to collect meals, however the cranium is unknown, so not clear what it ate
- Lanky and quick
- The 5 bones between the wrist and fingers (metacarpus) have been fused, which added to its power
- Additionally the foot was arctometatarsalian, which implies the center metatarsal is compressed and is behind the opposite two metatarsals on the prime, which can even have helped it with working
- Most likely lived round streams and river channels, mudflats, and shallow lakes
- Different dinosaurs that lived on the similar time and place included Gallimimus, Tarbosaurus, Deinocheirus, and smaller dromaeosaurids, oviraptorosaurs, troodontids, and birds, in addition to hadrosaurids like Barsboldia and Saurolophus, ankylosaurids like Tarchia, and a few titanosaurs and pachycephalosaurs
Enjoyable Truth: We’ve got coprolites courting all the way in which again to the Cambrian interval.