Episode 389: Your Questions Answered. Dinosaurs in Antarctica, how long humans would survive alongside dinosaurs in the Mesozoic, and many more questions answered.
You can listen to our free podcast, with all our episodes, on Apple Podcasts at: https://itunes.apple.com/us/podcast/i-know-dino/id960976813?mt=2
We answer the following questions:
- What “Dino of the day” most surprised you / most interested you in researching it for an episode?
- What famous dino field expedition would you liked to have been part of?
- Who of the early paleontologists do you wish you could have interviewed?
- If you had to take a side in the Bone Wars, would it be Marsh or Cope?
- Will there ever be a chance that your favorite groups of dinosaurs (sauropods and ankylosaurs) could change?
- What are your favorite non-saurian extinct animals?
- Do you have ancient plant or fungal life you find interesting?
- Did you have a favorite dinosaur toy growing up?
- How long would a human survive in the early-Triassic, mid-Jurassic, or end-Cretaceous?
- What is the Coolest fossil you have found or seen?
- What makes Velociraptor (and other feathered dinosaurs) dinosaurs and not birds?
- Which fossil most seems to be missing from the record, but you hope or expect to be found? Maybe a feathered T. rex?
- What is—and isn’t—known about dinosaur skin? How is it known, soft tissue preservation?
- Do you have a routine for how you do the research for each episode?
- Is there a specific specimen you want to visit and see someday?
- Have any dinosaur fossils been found in the in Antarctica? Is their any chance any skin, bone etc could be locked in the permafrost?
The dinosaur of the day: Proa
- Basal iguanodont that lived in the Early Cretaceous in what is now Teruel Province, Spain (Escucha Formation)
- Looks like other iguanodonts, with a long tail, bulky body, and could walk on all fours
- Had a relatively large head and was stocky
- Estimated to be 23 to 26 ft (7 to 8 m) long
- Type and only species is Proa valdearinnoensis
- Described in 2012 by Andrew McDonald and others
- Genus name means “prow”, and refers to the pointed shape of the predentary bone (lower jaw), that looks like the bow on a boat
- Species name refers to Val de Ariño, the traditional name for the coal mines, near where the fossils were found
- At least six individuals found, including a partial skeleton and nearly complete skull (five specimens described in the paper)
- More than 340 bones found
- Originally reported in 2005, as fragmentary remains from an indeterminate basal iguanodont
- Sister taxon to Batyrosaurus
- Unique features include the predentary coming to a point at the rostral margin (the tip)
- Helps fill a gap in the fossil record of basal European iguanodonts
- Three braincases found (two well preserved)
- CT scanned the braincases, and found that its encephalization quotient (EQ) was about 3.6, which is pretty high
- Helps show that there was a higher EQ for a short time in some ornithopods (not just theropods)
- Hypothesized that this higher EQ may have led to living in groups and caring for young
- Lived in a swampy environment with conifers, ferns, and flower plants
- More than 11,000 fossils found in the area since 2010
- Fossils found in amber in the area (often insects, but also mammal hair and a fragment of dinosaur feather)
- Have also recently found blood-sucking mosquitoes and dinosaur fossils together, which means mosquitoes may have bit the dinosaurs
- Other dinosaurs that lived around the same time and place include the nodosaurid Europelta, allosauroids, iguanodontids, and titanosauriformes
- Other animals include fish, turtles, crocodiles, mammals, and insects
The word “mark” is an important term in ichnology, but its exact meaning is disputed.
Thank you Patrons!
Your support means so much to us and keeps us going! If you’re a dinosaur enthusiast, join our growing community on Patreon at patreon.com/iknowdino