New data on lindholmemydid turtle Lindholmemys from the Late Cretaceous ofMongolia

Reinvestigation of a fragmentary lindholmemydid turtle from a Mongolian loc ality Sheeregeen Gashoon (late Turonian-Santonian) suggested reassigmment t o Lindholmemys martinsoni Ckhikvadze, 1975, This restricts the stratigraphi c range of the genus Mongolemys, to which the specimen was originally assig ned. Additionally, new morphological data on L. martinsoni have been gather ed and are presented in this paper. The Lindholmemydidae are considered her e as a paraphyletic group uniting primitive testudinoids tall of which are known from Cretaceous to Paleocene of Asia). Their shell morphology is char acterized by well developed plastral buttresses, which contact costal bones (synapomorphy of testudinoids, see Gaffney & Meylan 1988) and by complete (uninterrupted) row of inframarginal scutes (primitive character).