Jurassicbro238 Posted March 10, 2023 Share Posted March 10, 2023 (edited) Edited 3/11/23 to better reflect current info. I've recently gotten interested into the turtles of the Hell Creek and Lance formations and decided to compile what I've gathered onto here. It's amazing to see how many different species have been described from these deposits. I've also tried to attach links to papers that talk about these turtles (at about 22 species!). If I've gotten anything wrong or missed anything please let me know! Adocidae: Adocus sp. (part30043.pdf) listed as being present Baenidae: (https://www.researchgate.net/publication/283851398_A_Review_of_the_Fossil_Record_of_Turtles_of_the_Clade_Baenidae) "Baena" hayi Boremys pulchra (https://www.researchgate.net/publication/241730757_Anatomy_and_relationships_of_the_turtle_Boremys_Pulchra_Testudines_Baenidae) (https://www.researchgate.net/publication/362931080_Stratigraphic_range_extension_of_the_turtle_Boremys_pulchra_Testudinata_Baenidae_through_at_least_the_uppermost_Cretaceous) Cedrobeana putorius (A_Revision_of_Plesiobaena_Testudines_Baenidae_and_.pdf) Eubaena cephalica (https://www.researchgate.net/publication/326165618_A_Description_of_the_Skull_of_Eubaena_Cephalica_Hay_1904_and_New_Insights_into_the_Cranial_Circulation_and_Innervation_of_Baenid_Turtles) Eubaena hatcheri Gamerabaena sonsalla (https://www.researchgate.net/publication/238706760_A_New_Baenid_Turtle_from_the_Upper_Cretaceous_Maastrichtian_Hell_Creek_Formation_of_North_Dakota_and_a_Preliminary_Taxonomic_Review_of_Cretaceous_Baenidae) Hayemys latifrons Peckemys brinkman (see Cedrobaena) Palatobaena cohen Saxochelys gilberti (https://www.researchgate.net/publication/336314521_A_new_baenid_turtle_Saxochelys_gilberti_gen_et_sp_nov_from_the_uppermost_Cretaceous_Maastrichtian_Hell_Creek_Formation_sexual_dimorphism_and_spatial_niche_partitioning_within_the_most_speciose_group_o) Stygiochelys estesi (https://digitallibrary.amnh.org/handle/2246/2652?show=full) Thescelus insiliens Chelydridae?: Emarginachelys cretacea (https://www.biodiversitylibrary.org/part/17248) Compsemydidae: Compsemys victa (https://www.researchgate.net/publication/232688551_Cranial_Anatomy_and_Phylogenetic_Placement_of_the_Enigmatic_Turtle_Compsemys_victa_Leidy_1856) Kinosternidae: Hoplochelys clark (https://www.researchgate.net/publication/226429911_A_new_kinosternoid_from_the_Late_Cretaceous_Hell_Creek_Formation_of_North_Dakota_and_Montana_and_the_origin_of_the_Dermatemys_mawii_lineage) Sinemydidae?: Judithemys backmani (https://www.researchgate.net/publication/232696535_Macrobaenidae_Testudines_Eucryptodira_from_the_Late_Paleocene_Clarkforkian_of_Montana_and_the_Taxonomic_Treatment_of_Clemmys_backmani) Nanhsiungchelydidae: Basilemys sinuosa (B023a33.pdf) listed as being present Trionychidae: Axestemys infernalis (https://www.researchgate.net/publication/337382811_A_new_species_of_trionychid_turtle_Axestemys_infernalis_sp_nov_from_the_Late_Cretaceous_Maastrichtian_Hell_Creek_and_Lance_formations_of_the_Northern_Great_Plains_USA ) (https://www.researchgate.net/publication/260636886_Giant_fossil_soft-shelled_turtles_of_North_America) Hutchemys sterea (https://escholarship.org/uc/item/6090612k) Hutchemys walkerorum (https://www.sciencedirect.com/science/article/abs/pii/S0195667122000362) Helopanoplia distincta (https://peerj.com/articles/4169.pdf) Gilmoremys lancensis ( https://www.researchgate.net/publication/259887738_New_Material_of_Gilmoremys_lancensis_nov_comb_Testudines_Trionychidae_from_the_Hell_Creek_Formation_and_the_Diagnosis_of_Plastomenid_Turtles) Edited March 11, 2023 by Jurassicbro238 7 1 Link to comment Share on other sites More sharing options...
rocket Posted March 10, 2023 Share Posted March 10, 2023 thanks, downloaded all, did not know that there is such a diversity of turtles in the hell creek and lance. Thought there will be perhaps 5 or 6 different, not 20... Link to comment Share on other sites More sharing options...
Jurassicbro238 Posted March 10, 2023 Author Share Posted March 10, 2023 That also surprised me as I started looking through the literature. Turtles must've been extremely common in the area 1 Link to comment Share on other sites More sharing options...
hadrosauridae Posted March 10, 2023 Share Posted March 10, 2023 28 minutes ago, Jurassicbro238 said: That also surprised me as I started looking through the literature. Turtles must've been extremely common in the area Yeah, just like today, turtles love swampy marsh lands. "There is no shortage of fossils. There is only a shortage of paleontologists to study them." - Larry Martin Link to comment Share on other sites More sharing options...
hadrosauridae Posted March 10, 2023 Share Posted March 10, 2023 8 "There is no shortage of fossils. There is only a shortage of paleontologists to study them." - Larry Martin Link to comment Share on other sites More sharing options...
jpc Posted March 10, 2023 Share Posted March 10, 2023 Wow... thanks for this. I talked to Tyler Lyson recently (Denver Museum; works on these things) and he told me that there are about 25 species of turtles in the Lance/HC. And here they all are. Excellent work. 1 Link to comment Share on other sites More sharing options...
Jurassicbro238 Posted March 10, 2023 Author Share Posted March 10, 2023 Glad you found this useful! Link to comment Share on other sites More sharing options...
ynot Posted March 11, 2023 Share Posted March 11, 2023 @Tidgy's Dad Thought You would like this. 1 Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted March 13, 2023 Share Posted March 13, 2023 On 3/11/2023 at 3:00 PM, ynot said: @Tidgy's Dad Thought You would like this. Thanks, Tony! You are quite right, Tidgy and I are very impressed. Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
PFOOLEY Posted March 13, 2023 Share Posted March 13, 2023 @Jurassicbro238 I'm going to leave these here if you're interested... Re-Assessment of Late Campanian (Kirtlandian) Turtles from the Upper Cretaceous Fruitland and Kirtland Formations, San Juan Basin, New Mexico, USA Sullivan, Jasinski and Lucas (2013).pdf A new species of trionychid turtle from the Upper Cretaceous (Campanian) Fruitland Formation of New Mexico, USA 2018_Joyce_etal_Gilmoremys_gettyspherensis.pdf ... . 1 "I am glad I shall never be young without wild country to be young in. Of what avail are forty freedoms without a blank spot on the map?" ~Aldo Leopold (1887-1948) New Mexico Museum of Natural History Bulletins Link to comment Share on other sites More sharing options...
Jurassicbro238 Posted March 13, 2023 Author Share Posted March 13, 2023 Thank you! I'll definitely enjoy reading through these when I get the chance! Link to comment Share on other sites More sharing options...
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