Jim Kirklandさんのイラストまとめ

For #FossilFriday, just a reminder of how beautiful the Holotype skull of Gastonia burgei is. Best Polacanthid skull so far on planet. Yhis guy was a head pounder like a dinocephalian with pterygoid processes forming a shock absorber at front of braincase. I'm looking at you!

So for #fossilfriday, about fossil symbols for @BryceCanyonNPS, My favorite sawskate (sawfish are convergent on this extinct Cret family), Texatrygon brycensis. These teeth found in Mid Campanian Wahweap Fm. at Bryce, were from a close relative of Lebanopristis and Micropristis.

@JoschuaKnuppe BOTH Scelidosaurus and Mymoorapelta have faint ridges on lateral osteoderms dorsally, which would be strongly expressed in overlying keratin. Gastonia dorsal osteoderms and spines have strong ridges around their bases that would extend to apex in overlying keratin.

@BrianEngh_Art @v4leri4Moon Pretty sure its the same as BYU's Movie Valley Anky site. Matt and John's anky material maybe float 10 m down slope from BYU's pit. Don's finds ~10 east may well not be anky. BYU's stuff, all there was? Cannot prove!

@utahgeological Here is a simple sketch on how those Oxfordian Summerville Fm. trackways are formed.

Link is to a report on a site at the base of the Morrison pterosaur tracks with sauropod tracks that we found at Flaming Gorge way back in 2002.
https://t.co/pr1Gbs4KIi
https://t.co/1lzq6qHslW

Holotype osteoderms from Mymoorapelta, E, F.. cervical ring lateral spine, M, shoulder spine, DD, EE, FF caudosacral plates. Rest of osteoderms from Gargoyleosaurus. Full fig of Mymoorapelta holotype shoulder spine and caudalosacral plates. #FossilFriday Osteoderms define sp.

2.5 days cropping and editing and finally got first draft plate put together for the description of "Gamera" from the Suarez site. Verts are a pain to crop!! Next the dorsals....

Obviously, the US swindled them out of it, so,,...........

@TimVersteeg4 @CubanCroc2 @SerpenIllus A pleasent Late Maastichtian day in the North Horn of central Utah.

Ken Carpenter sent his picture of the Holotype distal tail of Sauropelta; matches up well with Coombs' (fixed) drawing. Still does not jive with the material on exhibit! Did KC shoot his pic before exhibit made?? Got smashed before I shot and a tail was fabricated for exhibit?