Episode 447: Dinosaurs in North The usa: That includes Prehistoric Planet 2


Episode 447: Dinosaurs in North The usa: That includes Prehistoric Planet 2. 80 ton Alamosaurus, Tyrannosaurus shedding to Quetzalcoatlus, and sauropods being killed via lightning (however now not for the explanation you suppose)

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Paleo Pins: Diversity Expansion

The dinosaur of the day: Pectinodon

  • Seems in episode 5 of Prehistoric Planet, season 2
  • Troodontid that lived within the Past due Cretaceous in what’s now Wyoming (Lance Formation)
  • Most probably appeared bird-like, with feathers, lengthy legs, and being a troodontid, had sickle claws on the second one ft (most effective know its enamel)
  • As a troodontid, could have had excellent imaginative and prescient and could have long gone after small prey
  • Sort and most effective species is Pectinodon bakkeri
  • Genus identify manner “comb teeth”
  • Genus identify refers back to the comb-like serrations at the enamel
  • Species identify in honor of Bob Bakker
  • Described in 1982 via Kenneth Chippie
  • In 1982, Kenneth Chippie named Pectinodon in a paper about child dinosaurs from the Lance and Hell Creek Formations
  • Studied 11 taxa from 9 localities, in response to small enamel and portions of skulls that have been discovered via screen-washing (underwater washing and screening)
  • Helped display that child dinosaurs weren’t as uncommon as have been up to now idea prior to that time
  • Holotype of Pectinodon is a teeth, paratypes and referred specimens are enamel
  • Discovered “crowns of enamel strongly compressed laterally and recurved”
  • Described as an it seems that small species, weighing underneath 220 lb (100 kg)
  • Holotype is an grownup teeth, the most important teeth, and is 6.2 mm lengthy and three.7 mm vast (about 0.2 in via 0.1 in)
  • Paratypes are small and more than likely from young children
  • Different referred enamel are from adults
  • Tooth glance very similar to Saurornithoides inequalis (up to now referred to Troodon formosus and Saurornithoides junior)
  • Stated the enamel seems very similar to Velociraptor enamel, however some slight variations within the serrations
  • Has been regarded as to be synonymous with Troodon formosus
  • In 1991 George Olshevsky discovered it to be its personal species, Troodon bakkeri
  • In 2011, Lindsay Zanno and others analyzed how troodontids have been categorized, and located all of the specimens assigned to Troodon formosus have been more than likely other species, and agreed Pectinodon bakkeri was once legitimate
  • In 2008, Longrich discovered Pectinodon to be legitimate
  • In 2013 Phil Currie and Derek Larson additionally discovered Pectinodon to be legitimate, and stated the enamel might be present in each the Lance Formation and Hell Creek Formation
  • Different enamel from Dinosaur Park Formation have been referred to cf. Pectinodon (onerous to categorise in particular)
  • In 1985 Lev Nesov named a 2d species, Pectinodon asiamericanus, in response to a teeth present in Uzbekistan, but it surely’s regarded as to be a nomen dubium

Amusing Reality:

Sauropods would had been truly prone to lightning moves, and now not simply because they’re so tall.

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