Browsing by Author "Schwartz, Jeffrey H."
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Item Craniodental morphology and the systematics of the Malagasy lemurs (Primates, Prosimii). Anthropological papers of the AMNH ; v. 52, pt. 3(New York : [American Museum of Natural History], 1974) Tattersall, Ian.; Schwartz, Jeffrey H.Item A Diverse hominoid fauna from the Late Middle Pleistocene breccia cave of Tham Khuyen, Socialist Republic of Vietnam. Anthropological papers of the AMNH ; no. 73(New York, N.Y. : American Museum of Natural History, 1994) Schwartz, Jeffrey H.; Long, Vu The.; Cuong, Nguyen Lan.; Kha, Le Trung.; Tattersall, Ian.The cave of Tham Khuyen in Lang Son Province, northeastern Vietnam, has yielded a large mammalian fauna of probable late middle Pleistocene date. A series of isolated hominoid primate teeth, formerly allocated to the extant orangutan Pongo pygmaeus, has recently been reexamined and found to represent more than one species. These specimens are described in detail in this paper and are analyzed as follows. Some of the teeth are indeed clearly identifiable as those of Pongo pygmaeus, but the majority appear to belong to a species related to the orangutan but not identical with it. A few teeth are distinct from either of the above, both in size and morphology, and are interpreted here as representing a previously undescribed genus and species of a large-bodied hominoid. In addition, a few teeth are regarded as indeterminate at present. With the recognition of this multiplicity of hominoid species at Tham Khuyen, it is evident that the large-bodied hominoid fauna of middle Pleistocene Vietnam was considerably more diverse than formerly supposed, including Gigantopithecus blacki) and Homo sp. in addition to the species noted above.Item Evolutionary relationships of living lemurs and lorises (Mammalia, Primates) and their potential affinities with European Eocene Adapidae. Anthropological papers of the AMNH ; v. 60, pt. 1(New York : American Museum of Natural History, 1985) Schwartz, Jeffrey H.; Tattersall, Ian.Item The phylogenetic relationships of Adapidae (Primates, Lemuriformes). Anthropological papers of the AMNH ; v. 55, pt. 4(New York : American Museum of Natural History, 1979) Schwartz, Jeffrey H.; Tattersall, Ian.Item Phylogeny and nomenclature in the "lemur-group" of Malagasy strepsirhine primates. Anthropological papers of the AMNH ; no. 69(New York : American Museum of Natural History, 1991) Tattersall, Ian.; Schwartz, Jeffrey H.Item Pseudopotto martini : a new genus and species of extant lorisiform primate. Anthropological papers of the AMNH ; no. 78(New York : American Museum of Natural History, 1996) Schwartz, Jeffrey H.Two specimens -one represented by a virtually complete skeleton and adult dentition and the other by skull, mandible, and mixed dentition- in the collections of the Anthropological Institute and Museum, University of Zurich-Irchel, that had been cataloged as Perodicticus potto do not possess the salient features of this prosimian primate. Although these specimens are cladistically lorisiform, and in some features are variably similar, especially to Arctocebus, Nycticebus, and Perodicticus, they do not share the suite of apomorphies that unites these extant lorisids plus the fourth genus, Loris, as a clade. The postcrania (preserved for one specimen) are primitive relative to those of lorisids in having a long tail and lacking a distinctly hooked ulnar styloid process. Both specimens are dentally primitive relative to lorisids in retaining a more buccally emplaced cristid obliqua and lacking deep hypoflexid notches on the lower molars, as well as in having relatively longer lower middle and last premolars. Nevertheless, these specimens appear to be more closely related to the lorisid clade than the more well-known lorisiform groups, the cheirogaleids and the galagids. In light of their dissimilarity to any other known lorisiform primate, a new genus and a new species are named to accommodate this previously unrecognized prosimian.Item A review of the European primate genus Anchomomys and some allied forms. Anthropological papers of the AMNH ; v. 57, pt. 5(New York : American Museum of Natural History, 1983) Schwartz, Jeffrey H.; Tattersall, Ian.Item A review of the Pleistocene hominoid fauna of the Socialist Republic of Vietnam (excluding Hylobatidae). Anthropological papers of the AMNH ; no. 76(New York, N.Y. : American Museum of Natural History, 1995) Schwartz, Jeffrey H.; Long, Vu The.; Cuong, Nguyen Lan.; Kha, Le Trung.; Tattersall, Ian.We review the nonhylobatid hominoid fauna currently known from all significant Pleistocene sites in Vietnam. Almost all of the sample examined consists of isolated teeth. In a previous study of material from the cave of Tham Khuyen (Schwartz et al., 1994) we identified, but did not name, a new species of Pongo as well as a new genus and species of thick-enameled, nonhominid hominoid. These new taxa are named and characterized in this contribution, as are four new subspecies of Pongo pygmaeus. We additionally note sparse evidence for other taxa whose affinities are not determinable on the basis of available specimens. Most large-bodied hominoid fossils from Vietnam are attributable to the genus Pongo; at most sites only the species Pongo pygmaeus is found. Positive evidence is extremely rare for both Homo and Gigantopithecus in the Pleistocene of Vietnam.Item A revision of the European Eocene primate genus Protoadapis and some allied forms. American Museum novitates ; no. 2762(New York, N.Y. : American Museum of Natural History, 1983) Tattersall, Ian.; Schwartz, Jeffrey H."The European Eocene primate genus Protoadapis, as generally conceived of, is long-lived and highly speciose, but nonetheless homogeneous. Reappraisal of the material involved shows, however, that among the 10 species allocated by Gingerich (1977) to Protoadapis and its closest relatives Cercamonius and Pronycticebus, three separate groups are discernible, together with three individual species that are clearly misattributed. Within the genus Protoadapis we recognize for the moment two species, P. curvicuspidens and P. recticuspidens, both originally described (as species of Plesiadapis) by Lemoine in 1878. These two differ somewhat in trigonid morphology, but both are quite distinct from all other material subsequently referred to Protoadapis. As thus constituted, Protoadapis may be most closely comparable to Agerinia. A second genus, by priority Pronycticebus, is represented by material formerly allocated to 'Protoadapis' (or Europolemur) klatti, as well as by Pronycticebus gaudryi and by a new species we describe here. Pronycticebus may possibly bear affinities with certain Pelycodus. The third major morph in the assemblage is comprised of specimens allocated to 'Protoadapis' angustidens (now filholi), 'Protoadapis' (or Cercamonius) brachyrhynchus, and possibly 'Protoadapis' weigelti; the earliest available name for the single species represented by this material is Cercamonius brachyrhynchus, and its affinities lie with the larger species of Notharctus. The species 'Protoadapis' ulmensis, based on isolated teeth, appears to be related to Adapis, the genus in which it was originally described, and the affinities of the two species 'Protoadopis' russelli and 'P.' louisi are unclear"--P. [1].