pachy-pleuro-whatnot-odon Posted March 25 Share Posted March 25 17 minutes ago, North said: T. ivoensis most likely swam at our area, so I have special interest towards it. Nether way it is an cool specimen. Yeah, that's one of the main reasons I presuppose my specimen could be T. ivoensis. Many of the other tylosaurine species are known either from just their type locality or from much further afield, as can quickly be cleaned from checking the overview on the PaleoBioDB. Time-wise, T. ivoensis also corresponds well, since Russell (1967) mentions it (by its old name 'Mosasaurus' ivoensis) to range from the lower Campanian onward. Unfortunately, however, I've as yet been unable to find more informative reference sources to help me identify the specimen, other than Grigoriev et al. (2009) generally on Russian mosasaur species, but from a different region; Grigoriev (2014) on the identification of the skull of a Mosasaurus hoffmannii individual from the city of Penza; and Grigoriev (2013) on Prognathodon lutugini. Checking the PaleoBioDB-map confirms this, but doesn't add much, apart from mentioning a polycotylid plesiosaur called Georgiasaurus penzensis. Searching Ammonit.RU didn't result in anything much either, with there being just three results: A russellosaurine cf. plioplatecarpinae tooth from the Penza-region of Russia (source). An unidentified mosasaur tooth from the Penza-region of Russia, of uncertain affinity though possibly tylosaurine (source). Cf. tylosaurinae indet. tooth, based on the tertiary striae visible, could even be T. ivoensis, considering how stubby it is; Penza-region of Russia (source). 2 'There's nothing like millions of years of really frustrating trial and error to give a species moral fibre and, in some cases, backbone' -- Terry Pratchett Link to comment Share on other sites More sharing options...
North Posted March 25 Share Posted March 25 55 minutes ago, pachy-pleuro-whatnot-odon said: Yeah, that's one of the main reasons I presuppose my specimen could be T. ivoensis. Many of the other tylosaurine species are known either from just their type locality or from much further afield, as can quickly be cleaned from checking the overview on the PaleoBioDB. Time-wise, T. ivoensis also corresponds well, since Russell (1967) mentions it (by its old name 'Mosasaurus' ivoensis) to range from the lower Campanian onward. Unfortunately, however, I've as yet been unable to find more informative reference sources to help me identify the specimen, other than Grigoriev et al. (2009) generally on Russian mosasaur species, but from a different region; Grigoriev (2014) on the identification of the skull of a Mosasaurus hoffmannii individual from the city of Penza; and Grigoriev (2013) on Prognathodon lutugini. Checking the PaleoBioDB-map confirms this, but doesn't add much, apart from mentioning a polycotylid plesiosaur called Georgiasaurus penzensis. Searching Ammonit.RU didn't result in anything much either, with there being just three results: A russellosaurine cf. plioplatecarpinae tooth from the Penza-region of Russia (source). An unidentified mosasaur tooth from the Penza-region of Russia, of uncertain affinity though possibly tylosaurine (source). Cf. tylosaurinae indet. tooth, based on the tertiary striae visible, could even be T. ivoensis, considering how stubby it is; Penza-region of Russia (source). If Im not mistaken. During that time Poland was still mostly shallow sea, so it is possible since there was quite short route between. 1 There's no such thing as too many teeth. Link to comment Share on other sites More sharing options...
North Posted March 25 Share Posted March 25 (edited) Jaw section arrived today that I believe to be Tylosaurus proriger from Ozan fm North Texas. Total length ~ 12cm, width ~ 4cm, height ~ 8cm. Base of the broken tooth 2.1cm × 1.7cm. Edited March 25 by North 4 There's no such thing as too many teeth. Link to comment Share on other sites More sharing options...
pachy-pleuro-whatnot-odon Posted March 25 Share Posted March 25 1 hour ago, North said: Jaw section arrived today that I believe to be Tylosaurus proriger from Ozan fm North Texas. So this one went to you then, and eventually did manage to come in! Really cool! Awesome specimen! 1 'There's nothing like millions of years of really frustrating trial and error to give a species moral fibre and, in some cases, backbone' -- Terry Pratchett Link to comment Share on other sites More sharing options...
msantix Posted March 26 Share Posted March 26 Received a Pterosaur cervical vertebra - most likely Azhdarchid from the Ouled Abdoun Basin. Measures 84mm and could be from Phosphatodraco or one of the undescribed Azhdarchid Pterosaurs. 5 Link to comment Share on other sites More sharing options...
SPrice Posted March 29 Share Posted March 29 Kind of an unexpected purchase but it was cheaper from China than Madagascar. Go figure. I went for mass, weight and volume on these two...plus decent looking examples. The big boy... And the little guy. Steve 2 Link to comment Share on other sites More sharing options...
Opabinia Blues Posted April 6 Share Posted April 6 Received this one today - Gorgonophontes peleron from the upper Carboniferous Stark Shale of eastern Nebraska. It’s an early stomatopod, in other words, a mantis shrimp! A super unique arthropod to add to the collection! 2 “The worse the country, the more tortured it is by water and wind, the more broken and carved, the more it attracts fossil hunters, who depend on the planet to open itself to us. We can only scratch away at what natural forced have brought to the surface.” - Jack Horner Link to comment Share on other sites More sharing options...
paulyb135 Posted April 9 Share Posted April 9 Nanotyrannus Hell Creek Formation Montana 4 Link to comment Share on other sites More sharing options...
trilobites_are_awesome Posted April 9 Share Posted April 9 2 hours ago, paulyb135 said: 2 hours ago, paulyb135 said: Nanotyrannus Hell Creek Formation Montana That's a really nice one! Cheers! James Link to comment Share on other sites More sharing options...
Daze Posted April 9 Share Posted April 9 I'm not really into bone 'fragments', but I gladly make an exception for this huge chunk of Tyrannosaurus Rex bone. Since sizable T-Rex bones are hard to find and very expensive I'm very glad to have this one in my collection. Found in the Hell Creek Formation, South Dakota. The bone is 10.5" (26,7 cm) long and 6" (15,2 cm) at its widest point. I left some of the matrix inside the bone for stability and because I think it looks nicer. Sorry for the bad photo quality, couldn't get it better for some reason. 3 Link to comment Share on other sites More sharing options...
FF7_Yuffie Posted April 10 Share Posted April 10 (edited) A new purchase. Two stegosaur teeth from Morocco (Adratiklit). Not the greatest condition, but these are still very rare. I may trade one at some point and keep one. Edited April 10 by FF7_Yuffie 4 Link to comment Share on other sites More sharing options...
cngodles Posted April 14 Share Posted April 14 I've been doing a lot of work on fossil brachiopods this past month, so I ordered some existent branchiopods from Alaska to study up close. Sorry if it's not technically a fossil, but it's part of fossil research. Here is Travratalia transversa 1 Fossils of Parks Township - Research | Catalog | How-to Make High-Contrast Photos Link to comment Share on other sites More sharing options...
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