Episode 207 is all about Montanoceratops, a primitive ceratopsian with an unusually deep tail due to its vertebral spines.
We additionally interview Ashley & Lee Corridor, each from the Cleveland Museum of Pure Historical past. Ashley is the Grownup Packages Coordinator and Lee is a Preparator and Lab Supervisor. However extra importantly, like us, their wedding ceremony closely featured dinosaurs. Observe Ashley on twitter & Instagram @LadyNaturalist and Lee on on twitter & Instagram @Paleeoguy
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On this episode, we focus on:
Information:
- Extra particulars from this years SVP convention (referenced abstracts might be discovered within the PDF from the assembly) supply
- T. rex may flip extra rapidly than comparable dinosaurs
- New histology on the tyrannosaurs Jane & Petey present that Nanotyrannus might be a juvenile T. rex
- Simulated jaw mechanics confirmed the chew drive and bone penetration of a number of tyrannosaurs
- The juvenile T. rex Discovered N.E. Montana contains partial arms, toes, vertebrae, ribs, a partial cranium, and tooth
- Therizinosaurs have an uncommon mixture of basal arm musculature and extra avian fashion leg musculature
- Dinosaurs’ distinctive single ovary seems to have advanced after Oviraptor however earlier than Troodontidae
- We don’t know if giant bodied dromaeosaurs (velociraptor and bigger) had tail followers
- The brand new “Mtuka titanosaur” was present in Africa
- An evaluation of fossil fragments in Mygatt-Moore confirmed about half of the bones had marks on them
- Maiasaura humeri bone microstructure modified as they aged, supporting a shift from bipedal to quadrupedal
- Pachycephalosaurus has theropod-like tooth within the entrance and different similarities to Dracorex
- An evaluation of the pachycephalosaur Sphaerotholus confirmed that every one 3 species must be thought of legitimate
- Early dinosaurs had skinny semi inflexible eggs, however within the early to mid Jurassic their eggs acquired thicker—probably as an answer to dehydration and predation
- By finding out dozens of crocodilian, turtle, and chicken nests, researchers discovered that the association is preserved effectively as it’s buried
- Skilled fossil preparator suggestions embody: put on gloves, use instruments solely after getting coaching, and check different strategies prematurely to keep away from undesirable destruction
- Top quality photogrammetry and 3D printing might be achieved utilizing cheaper gear
- It is very important standardize and clear up the big quantities of historic fossil information in order that it’s straightforward to go looking and perceive
The dinosaur of the day: Montanoceratops
- Title means “Montana horned face”
- Small ceratopsian that lived within the Cretaceous in what’s now Montana and Alberta
- Quadrupedal, as much as 9.8 ft (3 m) lengthy
- Primitive ceratopsian, had claws as an alternative of hooves and had tooth within the higher jaw, as an alternative of a toothless beak
- Initially thought to have a nasal horn however seems it was a cheek horn
- Herbivore, most likely used its beak to chew off leaves or needles
- Had tall spines on the bones of its tail, although the spines had been lined when it was alive
- Tail was deep, and was versatile, so could have been used to sign to different Montanoceratops
- First discovered within the St. Mary River Formation, and fossils collected in 1916 by Barnum Brown and Peter Kaisen
- Materials Brown discovered included an incomplete cranium, a number of ribs, some vertebrae, pelvic girdle, femora, left tibia and fibula, some toes
- Fossils are within the American Museum of Pure Historical past assortment
- Reconstruction was mounted in 1935
- Named in 1942 by Brown and Erich Maren Schlaikjer as a brand new species of Leptoceratops (Leptoceratops cerorhynchos)
- Charles Sternberg studied extra Leptoceratops in 1951 and located that the fabric Brown described was its personal genus, Montanoceratops
- Now could be the sort species of Montanoceratops
- David Weishampel discovered extra fossils in 1986
- Description of those fossils printed in 1998 by Brenda Chinnery and Weishamepl
- Brown collected extra materials in 1910 from the Horseshoe Canyon Formation in Alberta, Canada. Peter Makovicky described it in 2001 (well-preserved braincase) and assigned it to Montanoceratops
- Montanoceratops was a leptoceratopsid, that lived in the identical habitats as bigger ceratopsids and had been fairly various
- St. Mary River Formation had mountains on one facet, and had small ponds, streams, and floodplains
- Different dinosaurs that lived within the St. Mary Formation included ceratopsians Anchiceratops and Pachyrhinosaurus, nodosaur Edmontonia, hadrosaur Edmontosaurus, theropods equivalent to Hagryphus, Sauronotholestes, Troodon, tyrannosaurid Albertosaurus
- Additionally lived amongst fish, mosasaurs, reptiles, mammals, mollusks, and snails
- Horseshoe Canyon Formation had a valley with channels, swamps, river deltas, floodplains, shorelines, and wetlands. Additionally had altering sea ranges, with marine habitats, lagoons, tidal flats. It was subtropical, and moist and heat
- Different dinosaurs that lived within the Horseshoe Canyon Formation included Anodontosaurus, Edmontonia, Euoplocephalus, maniraptorans equivalent to Atrociraptor, Epichirostenotes, Richardoestesia, troodontids like Paronychodon, theropods like Albertonykus, ornithomimids like Dromiceiomimus and Ornithomimus, pachycephalosaurids like Stegoceras, ornithopods like Parkosaurus, hadrosaurids like Edmontosaurus, Hypacrosaurus, and Saurolophus, ceratopsians equivalent to Anchiceratops, Arrhinoceratops, Eotriceratops, Pachyrhinosaurus, tyrannosauroids like Dryptosaurus, tyrannosaurids like Albertosaurus and Daspletosaurus
- Principally had hadrosaurs
- Different animals included sharks, rays, sturgeons, and different fish, plesiosaurs, early marsupials, invertebrates (marine and terrestrial)
- Cool local weather, didn’t have many reptiles equivalent to crocodilians and turtles (although attainable that turtle range was declining)
Enjoyable Reality:
Alamosaurus sanjuanensis is presently the one identified titanosaur from North America.
Sponsors:
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