Troodon Posted October 11, 2016 Share Posted October 11, 2016 We see lots of dinosaur eggs from Asia, occasional eggs from France and very spotty from the Two Medicine of Montana and Alberta. Lets not also forgot the tons of mimic ones. This month's SVP journal describes the first fossil egg and eggshells from the Hell Creek Formation. The paper states that despite over 100 years of intense exploration, the terrestrial rocks of the Hell Creek Formation are void of fossil eggs. The paper describes the first fossil egg and additional eggshell fragments from the Formation. The two-layered structure of the smooth 1600 µm thick eggshell of Belonoolithus garbani permits assignment of the 6 cm x 8 cm to theropoda. The material was found in Garfield County, Montana near the Fort Peck Reservoir Other eggshell material described in the paper are described in this table 1 Table 2 compares the egg or eggshell fragments distributed in Montana and Alberta Paper is to large to post... Reference: Journal of Vertebrate Paleontology Fossil egg and eggshells from the Upper Cretaceous Hell Creek Formation, Montana Frankie D. Jackson & David J. Varricchio 8 Link to comment Share on other sites More sharing options...
HamptonsDoc Posted October 12, 2016 Share Posted October 12, 2016 Thanks for the info! Link to comment Share on other sites More sharing options...
jpc Posted October 12, 2016 Share Posted October 12, 2016 I got JVP in the mail today and saw this. It is amazing that we have never seen dino eggs in either the Hell Creek or the Lance. Link to comment Share on other sites More sharing options...
Ridgehiker Posted October 12, 2016 Share Posted October 12, 2016 That's a neat find. re Garfield County. The road from Jordan north to the reservoir is largely unexplored. No large bones so a lot of the hoodoos at first appear sterile. However, if one looks closer, there are some micro vertebrate sites rich with a wide variety of critters. For some reason lots of ankylosaur teeth and some with nice roots. Also some micro mammal teeth. The times I explored along that stretch I dont recall finding eggshell but might not have recognized the fragments. Link to comment Share on other sites More sharing options...
Fruitbat Posted October 12, 2016 Share Posted October 12, 2016 Well FINALLY! I was starting to wonder if all North American dinosaurs were sterile! Thanks for the post, Troodon! -Joe Illigitimati non carborundum Fruitbat's PDF Library Link to comment Share on other sites More sharing options...
Ridgehiker Posted October 12, 2016 Share Posted October 12, 2016 30 minutes ago, Fruitbat said: Well FINALLY! I was starting to wonder if all North American dinosaurs were sterile! Thanks for the post, Troodon! -Joe Ha! Some dinos may have been like some reptiles and fish... don't lay eggs but they hatch within the mother and she gives live birth. Link to comment Share on other sites More sharing options...
Fruitbat Posted October 12, 2016 Share Posted October 12, 2016 Kinda like mammals...right? -Joe Illigitimati non carborundum Fruitbat's PDF Library Link to comment Share on other sites More sharing options...
-Andy- Posted October 12, 2016 Share Posted October 12, 2016 What a wonderful find. Always happy to see eggs from new localities pop up. Looking forward to meeting my fellow Singaporean collectors! Do PM me if you are a Singaporean, or an overseas fossil-collector coming here for a holiday! Link to comment Share on other sites More sharing options...
Troodon Posted October 12, 2016 Author Share Posted October 12, 2016 Yes it's nice to see egg material from the Hell Creek gives collectors a hope of finding some fragments.. I've gone up that road from Jordan many times Canadawest and it's pretty rough country. Never collected and I think mostly BLM land. The paper believes that because of the thickness of the eggshell is not from an avian theropod. So if your looking at what's out there that it can be from the candidates are pretty few and include tyrannosaurs. 1 Link to comment Share on other sites More sharing options...
Opisthotriton Posted October 12, 2016 Share Posted October 12, 2016 12 hours ago, Canadawest said: The road from Jordan north to the reservoir is largely unexplored. I would argue that the road north of Jordan is one of the most intensely explored in the world, due to the large numbers of university/museum field crews from around the country that prospect the public (BLM/state/FWS/ACE/BR) lands in that area every summer. It's a busy place. Link to comment Share on other sites More sharing options...
Ridgehiker Posted October 12, 2016 Share Posted October 12, 2016 18 minutes ago, Opisthotriton said: I would argue that the road north of Jordan is one of the most intensely explored in the world, due to the large numbers of university/museum field crews from around the country that prospect the public (BLM/state/FWS/ACE/BR) lands in that area every summer. It's a busy place. Perhaps in some areas but not where I go. Its a huge area. How many 'crews' are you speaking of in a season? A half dozen? That cant even scratch the surface. Never seen any trace of anyone. And, few field crews are all that knowledgeable of prospecting in Cretaceous badlands. Most are made up of university students, etc. without the years of experience. I'd take a couple of my decades-of-experience hiking friends from our Cretaceous badlands and they'd find more collecting sites in a day than any whole field crew ( of mostly students)in a month. The same with finding trilobite sites in our mountains or Carboniferous shark teeth...or blastoids, etc. A hundred people could start looking but I'd rather have one seasoned person who has been out prospecting for his lifetime. Link to comment Share on other sites More sharing options...
Troodon Posted October 12, 2016 Author Share Posted October 12, 2016 We also address questions pertinent to turtle eggs. A new paper describes these eggs from the Montana's, Judith River Formation. Nice to see what real Cretaceous eggs look like. Scale is 1 cm Reference: Lawver, D.R., Jackson, F.D., An accumulation of turtle eggs with embryos from the Campanian (Upper Cretaceous) Judith River Formation of Montana, Cretaceous Research (2016), doi: 10.1016/j.cretres.2016.08.012. 2 Link to comment Share on other sites More sharing options...
jpc Posted October 12, 2016 Share Posted October 12, 2016 2 hours ago, Opisthotriton said: I would argue that the road north of Jordan is one of the most intensely explored in the world, due to the large numbers of university/museum field crews from around the country that prospect the public (BLM/state/FWS/ACE/BR) lands in that area every summer. It's a busy place. I agree.... Link to comment Share on other sites More sharing options...
Ridgehiker Posted October 12, 2016 Share Posted October 12, 2016 1 hour ago, Troodon said: We also address questions pertinent to turtle eggs. A new paper describes these eggs from the Montana's, Judith River Formation. Nice to see what real Cretaceous eggs look like. Scale is 1 cm Reference: Lawver, D.R., Jackson, F.D., An accumulation of turtle eggs with embryos from the Campanian (Upper Cretaceous) Judith River Formation of Montana, Cretaceous Research (2016), doi: 10.1016/j.cretres.2016.08.012. Is it mentioned what family of turtles these are thought to be from? If an extant group then would interesting to see photos of the eggs and read up on their egg nesting behaviour. Link to comment Share on other sites More sharing options...
Troodon Posted October 12, 2016 Author Share Posted October 12, 2016 30 minutes ago, Canadawest said: Is it mentioned what family of turtles these are thought to be from? If an extant group then would interesting to see photos of the eggs and read up on their egg nesting behaviour. Well like dinosaur eggs not assigned to a family but a ootaxon but has affinities to Adocus sp. Testudoolithus zelenitskyae Link to comment Share on other sites More sharing options...
RJB Posted October 13, 2016 Share Posted October 13, 2016 Thats perty dang cool!!! RB Link to comment Share on other sites More sharing options...
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