#Tsoabichi
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extinctmonsters.bsky.social
Four beautiful Green River Formation fossils newly on display this week: the caiman Tsoabichi, a mega-mousebird, a bean tree endemic to Hispaniola today, and long guy Palaeosinopa #FossilFriday
Caiman skull on slab, preserved in dorsal view. Jaw is slightly offset Bird fossil on slab with preserved feathers. You can see the unique four-toed mousebird feet Fern-y looking leaves projecting from a central stalk preserved on a slab Slab fossil of a long bodied, short legged mammal
August 29, 2025 at 1:03 PM
crocodiles.bsky.social
Caiman skull
Tsoabichi greenriverensis
52 million years old (Early Eocene)
Wyoming (Green River Formation)

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A fossil slab of a caiman skull. The slab is flat, but you can see dimensions to the skull. The mouth is slightly agape and off center.
August 26, 2025 at 11:25 PM
jenniferauh.bsky.social
I #Tsoabichi (from Shoshone "tso'abichi'", meaning "monster") is an extinct genus of caimanine crocodylian. Fossils are known from the Green River Formation in Wyoming, and date back to the Ypresian stage of the Eocene (Wasatchian stage of North American age). The genus
#Tsoabichi (from Shoshone "tso'abichi'", meaning "monster") is an extinct genus of caimanine crocodylian. Fossils are known from the Green River Formation in Wyoming, and date back to the Ypresian stage of the Eocene (Wasatchian stage of North American age). The genus
June 14, 2026 at 10:05 PM