Beesiiwo (meaning "big lizard") is a genus of hyperodapedontine rhynchosaur from the Late Triassic Popo Agie Formation in Western Wyoming. The type and only species is B. cooowuse, known from four specimens consisting of left and right maxilla fragments, and a left dentary fragment.
Beesiiwo (meaning "big lizard") is a genus of hyperodapedontine rhynchosaur from the Late Triassic Popo Agie Formation in Western Wyoming. The type and only species is B. cooowuse, known from four specimens consisting of left and right maxilla fragments, and a left dentary fragment.
== Description == Beesiiwo is known from four specimens which were referred to B. cooowuse in 2023 by Fitch et al., (2023). The holotype, USNM 494329 consists of a fragment of a left maxilla, and a left dentary, it was previously assigned to cf. "Hyperodapedon" sanjuanensis by Lucas et al., (2002). The additional specimens, UWGM 7027, UWGM 7028, and TxVP 46037.1, consist of fragments of two right maxillae, and a left maxilla. The authors state that an additional specimen NSM018GFF009.003 (which is currently referred to Oryctorhynchus bairdi by Sues et al., (2020)) has "No unique support for [being] Oryctorhynchus bairdi, and [they] do not consider it a part of O. bairdi. These attributes better align with those found in Beesiiwo cooowuse ... [they] suggest it is either a close relative of this taxon or a member of such." thumb|right|Life reconstruction of Beesiiwo cooowuse by palaeoartist Gabriel Ugueto
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).