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Hey all. I was wondering if anyone knew what this could be. Size is 2.7 mm by 1.1 mm. I was thinking some sort of bird based on the shape and the gradient. No clue on the specie though. The specimen is from the Hell Creek Formation in Northern Wyoming. Thanks!

Just out of curiosity I need yall opinions on this. So in 2005 a paper was published analysing various theropod material from Chatham Island, New Zealand, and the deposit they were in was aged to be 61 million years old. The authors of the paper interpreted this as the fossils had been eroded from a Mesozoic deposit and were reburied in an Cenozoic one. However multiple outcrops of the same formation have been found containing more dinosaur fossils, this and considering there is evidence to suggest that this is a bone bed could possibly mean that this is the first evidence of non-avian dinosaurs millions of years past the K-PG event. Now New Zealand during the late cretaceous was within the arctic circle meaning that the animals that lived there were subject to extremely cold temperatures, complete darkness for months on end and limited food during theose months of darkness. Now the animals here were already shielded from the direct impact of the asteroid and had adapted to survive a polar winter, so do you think it would be plausible to assume that some dinosaurs in New Zealand survived the K-PG mass extinction?? DOI to the paper 10.1016/j.palaeo.2005.07.017

Osinski, G.R., Grieve, R.A., Hill, P.J., Simpson, S.L., Cockell, C., Christeson, G.L., Ebert, M., Gulick, S., Melosh, H.J., Riller, U. and Tikoo, S.M., 2020. Explosive interaction of impact melt and seawater following the Chicxulub impact event. Geology, 48(2), pp.108-112. https://www.researchgate.net/publication/337464107_Explosive_interaction_of_impact_melt_and_seawater_following_the_Chicxulub_impact_event https://www.researchgate.net/profile/Richard_Grieve/research Gulick, S.P., Bralower, T.J., Ormö, J., Hall, B., Grice, K., Schaefer, B., Lyons, S., Freeman, K.H., Morgan, J.V., Artemieva, N. and Kaskes, P., 2019. The first day of the Cenozoic. Proceedings of the National Academy of Sciences, 116(39), pp.19342-19351. https://www.researchgate.net/publication/335722192_The_first_day_of_the_Cenozoic https://www.pnas.org/content/pnas/116/39/19342.full.pdf Yours, Paul H.