I Know Dino Podcast Present Notes: Antarctopelta (Episode 138)

I Know Dino Podcast Present Notes: Antarctopelta (Episode 138)


Episode 138 is all about Antarctopelta, a stocky, armored dinosaur.

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On this episode, we talk about:

Information:

  • A brand new set of big theropod tracks, Jurabrontes, present in Switzerland and described in Historic Biology and beforehand on SwissInfo
  • A brand new titanosaur, Europatitan eastwoodi, named after Clint Eastwood was found in Spain and described in PeerJ
  • Charles Sternberg might have uncovered a brand new hadrosaur nearly 100 years in the past that’s simply now being realized in keeping with FASEBJ
  • A dinosaur tracksite in Plagne, France is the longest of its sort in keeping with Geobios
  • Simply because a dinosaur footprint doesn’t appear like a foot doesn’t imply it’s not “effectively preserved” particulars in JVP
  • New dinosaur tracks in Cameroon, Africa might assist educate us concerning the Trans-Saharan Seaway in keeping with the Journal of African Earth Sciences
  • The primary ever dinosaur tracks might have been present in Gabon, Africa in keeping with Geodiversitas
  • A close to full skeleton of an Iguanodon was discovered at a brick manufacturing unit in Surrey, UK in keeping with The Gaurdian
  • Scientists on the Fukui Prefecture in Japan discovered a giant carnivore tooth 
  • Extra dinosaur tracks have been present in Dinosaur Valley State Park in Texas after a heavy rain uncovered them
  • The brand new web site Jurassic Information was launched to debate paleontology and its advantages to science
  • Smithsonian Magazine wrote a function about Clayton Phipps, a.okay.a. The Dinosaur Cowboy who discovered the Dueling Dinosaurs of Montana
  • Most Nationwide Park dinosaur discoveries are from the Colorado Plateau and Alaska
  • A brand new short-term exhibit is at Utah State College referred to as “Golf equipment, Horns and Shields: Armored Dinosaurs and Different Prehistoric Animals”
  • The Virginia Museum of Pure Historical past is having a Dino Pageant from July 21 and 22 to have fun its new exhibit, Dinosaurs: Reign of the Giants
  • The Youngsters’s Museum of Indianapolis in Indiana is providing dinosaur digs for households, lecturers, and adults
  • Dan Chure, who has been the palaeontogist at Dinosaur Nationwide Monument for 38 years (since 1979) has retired
  • Jim Kirkland lately acquired the 2017 Crawford Award for his paleontology work in Utah
  • Henry Sharpe, a 15 yr outdated paleoartist, is a future paleontologist who volunteers on the Royal Ontario Museum Youngsters’ Camp in keeping with Principally Mammoths
  • Paleoart: Visions of the Prehistoric Previous is a new e book displaying a visible historical past of art work impressed by paleontology
  • Inverse revealed two articles concerning the science and inaccuracies in The Land Earlier than Time
  • Atlas Obscura shared extra details about Gertie the dinosaur, the unique animated dinosaur
  • Jen Lewis changed dinosaurs in Jurassic Park with characters from the TV present Dinosaurs
  • Do we have to deal with dinosaurs extra properly? Carlos Perez thinks so
  • A girl dressed up in an inflatable T. rex costume and took boudoir photographs for her fiance
  • Smitten is promoting purple dinosaur capri leggins
  • The VR dinosaur searching recreation Island 359 was launched within the Oculus retailer and on Steam

The dinosaur of the day: Antarctopelta

  • Title means Antarctic protect
  • Lived within the Cretaceous in what’s now Antarctica
  • Laborious to categorise, as a result of it had traits of two totally different households (ankylosaur and nodosaur)
  • Thompson and others in 2011 urged it’s the basal most recognized nodosaurid
  • Just one species: Antarctopelta oliveroi
  • Species identify is in honor of Eduardo Olivero (discovered the holotype, first talked about it in print, and labored in Antarctica for a few years)
  • Found in 1986 on James Ross Island by Argentine geologists Eduardo Olivero and Roberta Scasso (they had been mountain climbing and noticed fragments)
  • Was the primary dinosaur discovered on Antarctica, however the second dinosaur from Antarctica to be formally named (first one named was Cryolophosaurus, which was present in 1993)
  • Present in shallow marine deposits
  • Took nearly a decade to excavate due to harsh climate and frozen floor
  • Holotype consists of three tooth, a part of the decrease jaw, cranium fragments, vertebrae, partial limb bones, toe bones, and items of armor
  • Numerous bones in poor situation as a result of they had been fragmented by freeze-thaw weathering
  • Had been written about in earlier publications (1987, 1991), however not named till 2006
  • Named by Leondardo Salgado and Zulma Gasparini
  • Medium sized, estimated to be about 13 ft (4 m) lengthy
  • Stocky
  • Herbivorous
  • Had leaf-shaped asymmetrical tooth
  • Had giant tooth in comparison with different ankylosaurs (largest one was 0.4 in or 10 mm throughout)
  • Quadrupedal
  • Six totally different osteoderms had been discovered close to Antarctopelta, however not many had been articulated with the skeleton, so it’s unclear the place they had been on the physique
  • One osteoderm is the bottom of a big spike
  • Additionally flat, rectangular plates, much like those that had been across the neck of the nodosaurid Edmontonia
  • Additionally had giant, armor round plates with smaller, polygonal nodules, which will have shaped a protect over the hips
  • Had an oval-shaped osteoderm with a keel operating down the center (discovered within the ribs so might have run in rows alongside its flank)
  • And had ossicles (small bony nodules) that had been most likely throughout the physique
  • Not a lot of the cranium is thought, however all cranium fragments discovered had been closely ossified
  • One bone, a supraorbital, had a brief spike that will have come outwards over the attention
  • Not all the tail was discovered, however among the vertebrae discovered most likely was close to the tip of the tail they usually had ossified tendons, which might have stiffened the tail (most likely to assist a tail membership, although that has not been discovered for Antarctopelta)
  • Nodosaurs do not need membership tails
  • At first scientists thought it was a juvenile, however components of the vertebrae had been fused collectively (as seen in adults) so could also be a subadult
  • Earth was hotter when Antarctopelta lived (no ice in Antarctica then)
  • Lived in forests with conifers and presumably deciduous timber
  • However nonetheless would have been darkish for lengthy intervals of time within the winter
  • Antarctic Peninsula presently was linked to South America, so animals may have traveled between continents (although no proof but of frequent ankylosaurs between Antarctica and South America)
  • In all probability lived in the identical space and time as ornithopods like Trinisaura

Enjoyable Truth:

What’s the distinction between a Asteroid, meteoroid, comet, meteor, and meteorite?

In accordance with the Heart for Close to Earth Object Research, a division of NASA:

  • Comet
    • A comparatively small, at occasions lively, object whose ices can vaporize in daylight forming an environment (coma) of mud and gasoline and, typically, a tail of mud and/or gasoline. (Normally from the outer photo voltaic system)
  • Asteroid
    • A comparatively small, inactive, rocky physique orbiting the Solar. (Normally from the asteroid belt)
  • Meteoroid
    • A small particle from a comet or asteroid orbiting the Solar.
  • Meteor
    • The sunshine phenomenon which ends up when a meteoroid enters the Earth’s environment and vaporizes; a capturing star.
  • Meteorite
    • A meteoroid that survives its passage via the Earth’s environment and lands upon the Earth’s floor.

Some outline meteoroids as items of comets or asteroids

Threshold between meteoroid and asteroid? Technically “considerably smaller than an asteroid and significantly bigger than an atom or molecule” Usually 1 to 10m and beneath is a meteoroid and bigger is an asteroid, however some contemplate the road extra like 1km

In accordance with the Lunar and Planetary Institute the Chicxulub impactor was most likely an asteroid or comet 10 to fifteen kilometers in diameter (6 to 7.5 miles)

  • Undoubtedly too massive to be a meteoroid

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