Patagorhynchus is a genus of prehistoric monotreme mammal from the Late Cretaceous (early Maastrichtian) Chorrillo Formation of Santa Cruz Province, Argentina. The genus contains a single species, Patagorhynchus pascuali. The holotype, MPM-PV-23087, consists of a lower right molar attached to a fragment of the dentary. Based on comparisons with the closely related Obdurodon, it is estimated to have weighed ~1.58 kg. It was collected near Rio Gallegos, Santa Cruz, Argentina in 2022 and is housed in the Museo Padre Molina.
Patagorhynchus is a genus of prehistoric monotreme mammal from the Late Cretaceous (early Maastrichtian) Chorrillo Formation of Santa Cruz Province, Argentina. The genus contains a single species, Patagorhynchus pascuali. The holotype, MPM-PV-23087, consists of a lower right molar attached to a fragment of the dentary. Based on comparisons with the closely related Obdurodon, it is estimated to have weighed ~1.58 kg. It was collected near Rio Gallegos, Santa Cruz, Argentina in 2022 and is housed in the Museo Padre Molina.
== Etymology == The first part of the genus name, Patago, refers to Patagonia and Ancient Greek ῥύγχος (rhúnkhos), meaning "snout". The species name pascuali honors Argentine paleomammalogist Rosendo Pascual.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).