Unexpected finding of a new Equus species (Mammalia, Perissodactyla) belonging to a supposedly extinct subgenus in late Pleistocene deposits of Khakassia (Southwestern Siberia)

摘要

AnewspeciesofEquus,E.(Sussemionus)ovodovin.sp.,wasexcavatedinProskuriakovaCave(Khakassia,SouthwesternSiberia)indepositscarbondatedat40000BP.Thisslender,middle-sizedequidwasfirstconsideredasrelatedtoE.hydruntinusStehlinamp;Graziosi,1935butbiomolecularanalysesshowedthatitactuallybelongedtoagrouphithertounknownofEquus.Indeed,amoredetailedstudyofthefossilsevidencedfeaturescharacteristicofthesubgenusSussemionusEisenmann,2010,commonduringthemiddlePleistocenebutsupposedextinctafter.Thecurrentarticledescribesthisnewspecies.