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HomeDinosaurI Know Dino Podcast Present Notes: Nigersaurus (Episode 246)

I Know Dino Podcast Present Notes: Nigersaurus (Episode 246)


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Episode 246 is all about Nigersaurus, the Darth Vader vacuum cleaner of the Cretaceous.

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On this episode, we talk about:

Information:

  • A brand new Psittacosaurus species from Mongolia, amitabha, was described with gastroliths and an important cranium supply
  • A ten yr outdated boy in Guangdong Province, China stumbled upon a nest of 11 dinosaur eggs supply
  • A university scholar In North Dakota discovered a Triceratops cranium whereas on a paleontology dig supply
  • Guests to the Denver Museum of Nature and Science can now see volunteers engaged on getting ready a Triceratops on their lab supply
  • A 6.6 ft (2 m) lengthy sauropod femur was discovered close to Cognac, France supply
  • In New York, on Lengthy Island, two new sights just lately opened up on the WAC Lighting Corridor of Science supply

The dinosaur of the day: Nigersaurus

  • Rebbachisaurid sauropod that lived within the Cretaceous in what’s now the Republic of Niger (Elrhaz Formation)
  • Quadrupedal, and had thick hind legs and a big tail
  • About 30 ft (9 m) lengthy, with a brief neck (solely 13 vertebrae)
  • Weighed about 4 tons (much like a contemporary elephant)
  • Scientists have discovered a fossilized jawbone of a hatchling, Paul Sereno mentioned it was so small it might “match on prime of a silver greenback”
  • Evenly constructed, with numerous air areas within the skeleton (extremely pneumatised)
  • Tail was stable (not like many of the remainder of the physique)
  • Entrance legs had been about 2/3 the size of the hind legs
  • Nigersaurus was described as a “Mesozoic cow”
  • Paul Sereno has described it as one thing between Darth Vader and a vacuum cleaner
  • Paul Sereno additionally described it as a “hammerhead shark with legs” and a “Mesozoic lawnmower” due to its tooth
  • Had greater than energetic 500 tooth in its mouth (perhaps as much as 1000 tooth), and changed tooth about each 14 days (quicker than a hadrosaur)
  • The five hundred tooth had been positioned in 50 vertical columns, and the tooth had been organized in broad, horizontal rows on the entrance of the snout (the realm the place its tooth had been are wider than the remainder of the cranium)
  • Enamel had been slim and needle formed
  • All tooth had been situated far to the entrance of the mouth
  • Had a really broad jaw, with a flat edge
  • Snout was extra broad than hadrosaurs
  • Had giant nostrils and a fleshy snout
  • Might have had a keratinous sheath round its jaws
  • Had a proportionately quick snout
  • Jaws had been wider than the cranium
  • Jaw was gentle weight and had just a few fenestrae
  • Had weak jaw muscle groups
  • Had a weak chunk, presumably one of many weakest sauropod bites
  • Jaw in all probability moved in up and down motions
  • Gathered and sliced delicate vegetation
  • In all probability ate delicate plans, like immature ferns, horsetails, and angiosperms (scientists suppose no matter plant it was was widespread, since Nigersaurus and the iguanodontian Lurdusaurus had been the commonest megaherbivores round of their time)
  • In all probability was a low browser, and ate meals with its head near the bottom
  • In all probability stored its head down, although there’s debate
  • Sereno and others did a examine in 2007 which discovered Nigersaurus stored its head rotated about 70 levels downwards (totally different in comparison with the same old horizontal place of different sauropods)
  • In 2009, Mike Taylor, Mathew Wedel, and Darren Naish discovered that Nigersaurus might have eaten meals with its head and neck on the 67 diploma angle, however didn’t suppose Nigersaurus all the time stored its head at that angle (discovered that trendy animals have a large variation of semicircular canals, which aren’t dependable to find out head posture). In 2013 Jesús Marugán-Lobón and others discovered that Sereno and his workforce’s strategies had been imprecise, and Nigersaurus in all probability stored its head horizontal like different sauropods
  • Had many hole bones, together with within the neck vertebrae
  • Jeffrey Wilson mentioned “The vertebrae are so paper-thin that it’s tough to think about them dealing with the stresses of on a regular basis use—however we all know they did it, and so they did it effectively”
  • Due to its gentle backbone, would have been laborious to raise its head a lot
  • Some scientists suppose Nigersaurus’ vertebrae allowed it to have extra vary of movement, so it could have stored its head extra horizontal more often than not
  • In 2017, Lucio M. Ibiricu and others discovered the rebbachisaurids had pneumatic skeletons to assist lower the quantity of vitality wanted to strikes its physique and reduce the quantity of warmth generated in doing so (they tended to stay in sizzling tropical and subtropical areas)
  • Cranium was small and in addition gentle, with giant fenestrae (openings) and skinny bones
  • In line with Sereno and his workforce, Nigersaurus cranium was designed as “most energy with minimal materials”
  • Had giant eyes
  • Had a small sized mind in comparison with its physique
  • Had small oflactory bulbs, so though it had a big, fleshy snout, didn’t have an important sense of scent
  • Kind species is Nigersaurus taqueti
  • Fossils present in a 1965-72 expedition by Philippe Taquet
  • Fossils described in 1976 however wasn’t named till 1999, after extra fossils had been discovered
  • Named in 1999 by Paul Sereno and others
  • Paul Sereno and workforce discovered extra fossils in 1997 and 2000 (wanted extra fossils to explain, the penumacity of the skeleton made them more durable to protect). Apparently among the fossils within the cranium had been so skinny you would see a robust beam of sunshine by means of them
  • Fossils are within the Nationwide Museum of Niger
  • Genus title means “Niger reptile”
  • Species title is in honor of Philippe Taquet
  • In all probability lived in floodplains
  • One of the widespread dinosaurs present in its space
  • Lived amongst giant theropods and crocodylomorphs
  • Sereno mentioned that Nigersaurus was simple prey, particularly for Sarcosuchus, a crocodyliform
  • Lived round iguanodontian Lurdusaurus, and different herbivores together with Ouranosaurus and Elrhazosaurus, and theropods like Suchomimus and Kyptops. Different animals within the space included pterosaurs, fish, and sharks

Enjoyable Reality:
Dinosaurs had crops within the Early Cretaceous (if not earlier).



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