I Know Dino Podcast Present Notes: Oviraptor (Episode 78)

Episode 78 can be about Oviraptor, a misunderstood theropod initially considered an egg thief.

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On this episode, we talk about:

  • The dinosaur of the day: Oviraptor
  • Identify means “egg taker” or “egg seizer”
  • George Olsen found the bones and Henry Fairfeld Osborn described Oviraptor in 1924
  • Small theropod that lived in Mongolia
  • Lived within the Cretaceous
  • First fossils have been discovered on prime of what have been considered Protoceratops eggs
  • Holotype is a partial skeleton with a crushed cranium, discovered close to a nest of 15 eggs
  • Osborn additionally mentioned the identify Oviraptor “might completely mislead us as to its feeding habits and belie its character” (turned out to be proper)
  • Kind species is Oviraptor philoceratops
  • Identify philoceratops means “lover of ceratopsians”
  • Species identify as a result of they thought Oviraptor likes to eat Protoceratops
  • Plenty of different Protoceratops have been discovered close to the place Oviraptor was discovered
  • Additionally, they thought that Protoceratops was the one to crush the Oviraptor cranium (nonetheless may have occurred, Protoceratops stumbled upon nest and Oviraptor died defending it?)
  • Within the Nineties, scientists discovered nesting oviraptorids, equivalent to Citipati, which suggests the eggs discovered close to Oviraptor have been most likely Oviraptor eggs and Oviraptor was most likely brooding
  • In 1994 comparable wanting eggs to the eggs discovered by Oviraptor had Oviraptor-like embryos
  • One oviraptorid nest had two embryo-sized Velociraptor bones. Could also be an instance of brood parasitism (some trendy birds do that, such because the Previous World cuckoo, the place they lay eggs in different species nest in order that the opposite species find yourself caring for the eggs. Potential that Velociraptor did that too)
  • Unclear what precisely Oviraptor ate (nonetheless probably ate eggs), although lizard stays have been discovered within the abdomen cavity of the one recognized Oviraptor skeleton, so it was partially carnivorous
  • Might have been omnivorous
  • Had a toothless beak
  • Had spikes on the roof of its mouth as an alternative of enamel
  • Osborn thought Oviraptor had a crushing jaw (toothless beak was an egg piercing software). In 1977 Barsbold mentioned the beak might have been sturdy sufficient to interrupt clam shells
  • Clams and mollusk fossils are widespread in the identical space as Oviraptor
  • Oviraptor is the sort genus of Oviraptoridae, a household Barsbold named in 1976
  • Osborn initially categorised Oviraptor as an ornithomimid, most likely as a result of it was so fowl like
  • Different oviraptorids embody Citipati, Conchoraptor, and Khaan (feathered theropods that lived in central Asia, very fowl like)
  • Chriostenotes is taken into account to be a detailed relative of Oviraptor
  • Not a dromaeosaur, simply shares the raptor identify
  • Citipati and Oviraptor are very comparable, and figuring out what Citipati seemed like has helped with Oviraptor reconstructions
  • Scientists thought Oviraptor had a crest like a cassowary, however now they suppose it’s Citipati that had the distinctive crest. Oviraptor most likely had a crest, however it’s not clear the scale or form as a result of the one cranium discovered of Oviraptor was crushed
  • In 1976 Barsbold referred six different specimens to Oviraptor, however later they have been reclassified as Conchoraptor. Additionally, a big specimen with a definite crest was categorised as Oviraptor in 1981, however on nearer inspection has been tentatively reclassified as Citipati (the one with the distinct head crest like a cassowary)
  • Crest might have been giant and U-shaped
  • Crests might have been for show
  • Pores and skin impressions from different oviraptorosaurs (Caudipteryx and Protarchaeopteryx) present there have been feathers on the physique, wings and tail, so Oviraptor most likely additionally had feathers
  • Oviraptor most likely used its arm to assist insulate eggs whereas brooding
  • Very bird-like (rib cage was very fowl like and inflexible)
  • Parrot-like head
  • About 6.5 ft (2 m) lengthy
  • Weighed about 55-76 lb (25-35 kg)
  • Bipedal, with lengthy legs, and will most likely transfer quick
  • Most likely a quick runner, like an ostrich (ostriches can run as much as 43 mph or 70 kph)
  • Had an s-shaped neck, lengthy tail, sturdy arms, curved claws on arms and ft (every had three digits)
  • Claws have been about 3 in (8 cm) lengthy, and had lengthy, greedy fingers
  • Most likely cared for its younger
  • Had muscular, versatile tails. Scott Individuals and his staff discovered that Oviraptor and its type may maintain their tails up at sharp, upward angles. Potential that male oviraptors displayed tail feathers to draw mates
  • Tail feathers like a peacock, to draw mates (might have carried out a mating dance)
  • Scott Individuals and his staff printed in regards to the tails in a research in 2015, referred to as “A doable occasion of sexual dimorphism within the tails of two oviraptorosaur dinosaurs”
  • The research was about two oviraptorids nicknamed Romeo and Juliet, who died subsequent to one another (giant sand dune fell on prime of them). They have been about the identical measurement and age, however Romeo had longer, extra advanced tail bones (like a peacock). They have been buried facet by facet for 75 million years
  • Can see Oviraptor in ARK: Survival Developed. Within the sport, Oviraptor steals eggs for itself or its proprietor, and it offers a mating pace increase to all close by allied dinosaurs
  • Oviraptorids lived within the Cretaceous in Mongolia and North America
  • They was thought-about ornithomimids, however now they’re a part of Maniraptora
  • They’re typically small, with brief skulls, toothless jaws, and crests on the cranium
  • Had feathers
  • In comparison with different maniraptorans, they’ve brief tails
  • Enjoyable Truth: Antacrtica is definitely dominated by non-flying dinosaurs. Penguins are each the most important animals at as much as 100lbs (45kg) and 4ft (122cm) tall on the continent and carnivores.

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