I Know Dino Podcast Present Notes: Lesothosaurus (Episode 133)

Episode 133 is all about Lesothosaurus, a primitive dinosaur that lived within the Jurassic in what’s now Lesotho.

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On this episode, we focus on:


  • A New troodontid Dinosaur Liaoningvenator currie from China was discovered curled up nearly like an embryo
  • A Camarasaurus present in Montana is the farthest north and oldest (30 years at demise) discovered thus far
  • New analysis sheds mild on the mysterious Jurassic Cleveland-Lloyd Dinosaur Quarry from Central Utah
  • The controversy of whether or not T. rex had scales or feathers continues with featherless pores and skin impressions printed in Biology Letters
  • A examine of how Australian birds that bury their eggs might assist us be taught extra about how & the place titanosaurs buried their eggs
  • The Missouri Institute of Pure Science bought a “truckload of fossils” in from Wyoming together with many hadrosaurs
  • Mark Witton explains how paleoartists use bone textures to foretell pores and skin composition, thickness, and ornamentation
  • Dinosaurs within the Wild Expertise begins in Birmingham on June 24 and so they put a Dakotaraptor in a mall to promote
  • Laurel Dinosaur Park in Maryland is open to public volunteers to assist excavate fossils on the primary and third Sundays
  • The Australian movie, My Pet Dinosaur has begun getting opinions and to this point it’s exceeding expectations
  • Saurian has despatched out copies of the pre-release to kickstarter backers on the $60 degree and above
  • Neverwinter is releasing a brand new growth “Tomb of Annihilation” which can function dinosaurs
  • Who would win in a battle, 10,000 chickens or 20 T. rex? Apparently the chickens, a minimum of in line with CNET
  • A small little one (in some way) will get surrounded by small T. rex toys in a toy retailer in China and panics
  • A brand new “Lego Thought” options dinosaur fossils in a museum relatively than the everyday recreations

The dinosaur of the day: Lesothosaurus

  • Identify means “lizard from Lesotho”
  • Ornithischian that lived within the Jurassic in what’s now southern Africa (Lesotho)
  • Named by Peter Galton in 1978
  • Just one legitimate species: Lesothosaurus diagnosticus
  • Named for the nation Lesotho, the place it was discovered
  • Initially thought of to be an ornithopod, however Paul Sereno prompt it might be essentially the most primitive of recognized ornithischians
  • Had some primitive anatomy, like {a partially} closed gap in its pelvis by a medial wall (most dinosaurs didn’t have this)
  • Lesothosaurus has been generally confused with Fabrosaurus (an ornithischian from the identical time and place, that was named in 1964). However solely a jawbone and three enamel have been described of Fabrosaurus, so it’s onerous to know for certain)
  • Richard Butler mentioned in 2005 that Lesothosaurus was a basal member of Neornithischia (contains pachycephalosaurs, ceratopsians, ornithopods)
  • Is also an early thyreophoran (identical group as stegosaurs and ankylosaurs)
  • Richard Butler named a brand new dinosaur, Stormbergia dangershoeki, in 2005, and a few scientists assume it was an grownup model of Lesothosaurus, which might make them synonyms. (In 2017, Baron, Norman & Barrett studied the variations between the 2 and located they have been largely due to their progress.)
  • Bipedal
  • About 3-6 ft (1-2 m) lengthy
  • Had a small cranium that was brief and flat
  • Had giant eye sockets and enormous cavities for the jaw muscle tissues
  • Had a brief, versatile neck
  • Had brief forelimbs in comparison with its hindlimbs
  • Had 5 fingers on every hand (solely 4 have been effectively developed)
  • Had lengthy, slender legs, small arms (palms might probably not grasp issues), and a slender tail
  • In all probability was a quick runner
  • Had a beaklike construction
  • Beak was coated in keratinous materials
  • Had leaf-shaped enamel behind the beak, and 12 fanglike enamel in entrance of the higher jaws
  • Couldn’t chew its meals, however might slice it with its beak
  • Omnivorous, in all probability (primarily based on research of its tooth, which discovered not sufficient put on)
  • In all probability ate small animals and delicate vegetation
  • Might have been much like a gazelle, looking low-vegetation and operating off when predators approached
  • Might have lived in teams
  • In 2015, scientists CT scanned Lesotho skulls, which gave a way more detailed description of the cranium and was used to refer extra specimens to the genus.
  • These specimens have been buried collectively, which is why scientists assume they might have lived in teams
  • Might have grown to grownup measurement in 4 years

Enjoyable Truth:

Utilizing the time period “hen sized” to explain a dinosaur is problematic

  • A examine in Poultry Science in 2014 bred 3 units of birds from strains from
  • 1957, 1978, 2005
  • After 56 days
    • 900g, 1,800g, 4,200g (2lb, 4lb, 9.25lb)
      • Greater than 4x improve in beneath 50 years
    • The world report hen “Huge Boy” from Pennsylvania weighed over 24lbs (slightly below 11Kg)
      • Approaching velociraptor weight
      • However nowhere close to velociraptor size—about 1.5m (5ft)


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