I Know Dino Podcast Present Notes: Malawisaurus (Episode 111)

Episode 111 is all about Malawisaurus, a titanosaur that lived in Malawi in Africa, throughout the Early Cretaceous.

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On this episode, we talk about:

  • The dinosaur of the day: Malawisaurus
  • Title means “Malawi lizard”
  • Sauropod, titanosaur, that lived in Malawi in Africa, throughout the Early Cretaceous
  • Named for the nation of Malawi, plus saurus (Greek for lizard)
  • Louis L. Jacobs, D. A. Winkler, W.R. Downs, and E.M. Gomani named Malawisaurus in 1993
  • Sidney H. Haughton described Malawisaurus in 1928 however categorized it as a species of Gigantosaurus (now an invalid title for a diplodocid, often known as Tornieria)
  • One other synonym is Janenschia (was once a Gigantosaurus species, Gigantosaurus robustus, that grew to become Tornieria robustus, however was present in 1991 to be distinct from Tornieria, and have become often known as Janenschia robustus)
  • Not the identical as Janenschia as a result of Malawi fossils come from older rocks than Janenschia
  • Kind species is Malawisaurus dixeyi
  • In 2005, Elizabeth Gomani wrote Sauropod Dinosaurs from the Early Cretaceous of Malawi, Africa, and wrote about Malawisaurus
  • Malawisaurus is likely one of the few titanosaurs the place cranium materials has been discovered
  • Discovered cranial components, cervical vertebrae, dorsal vertebrae, a sacrum, caudal vertebrae, chevrons, and dermal armor
  • Had a brief, excessive cranium
  • Small for a sauropod, about 52 ft (16 m) lengthy
  • Probably had osteoderms on its pores and skin, could have shaped fundamental armor to guard it
  • Titanosaurs are a bunch of sauropods, very massive herbivores, that lived over the last 30 million years of the Mesozoic Period. Some titanosaur species are the biggest land-living animals found, however in lots of instances, scientists have discovered incomplete fossils
  • The title Titanosaur got here from the Titans of Historical Greek mythology
  • The household, Titanosauridae, was named after Titanosaurus, an incomplete fossil (solely a partial femur and two incomplete caudal vertebrae) discovered by Richard Lydekker in 1877. Some scientists suppose there may be not sufficient info for Titanosauridae to be a genus
  • Titanosaurs have been the final group of sauropods. They lived about 90 to 66 million years in the past and have been the dominant herbivores. They changed different sauropods, like diplodocids and brachiosaurids
  • Titanosaur fossils have been discovered on all continents, together with Antarctica. Probably the most titanosaurs lived within the southern continents, which was then a part of the supercontinent Gondwana.
  • In comparison with different sauropods, Titanosaurs had small heads. Their heads have been additionally huge, with massive nostrils, and crests shaped by nasal bones
  • Enjoyable truth: Ontogeny pertains to developmental adjustments in an animal, whereas phylogeny pertains to evolutionary adjustments. There’s a idea referred to as the “recapitulation idea,” which for 100s of years has been used to equate embryonic improvement to a kind of mini-evolution, i.e., a human fetus appears to be like not solely appears to be like like a fish as a result of we advanced from fish, however actually passes via a fish stage. It’s not true, however it’s a good strategy to bear in mind what ontogeny and phylogeny imply.

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