436 Asi,\, EASTERN AND CENTRAL
diverge close to neck. P2 rounded lingually, longer m/d
buccally, and slightly swollen distolingually. Mesial root
sits more lingually; distal root lies buccally. P2 crown
wider b/l than long m/d. Very large metaconid sits op-
posite small protoconid; both very mesially positioned,
with small midline fovea lying mesial to their bases.
Metaconid much taller than protoconid. Moderately
thick cristid runs arcuately back from metaconid
around distal margin and up to apex of protoconid, en-
circling relatively broad, moderately deep, lingually
truncated talonid basin. Talonid lies well below mesial
portion of tooth. Ml is long m/d, narrow b/l, not much
wider b/l than P2. Metaconid was largest and tallest
cusp. Small entoconid situated quite distally and sepa-
rated from metaconid by notch. Modest hypoconulid
lies lingual to midline; not aligned with buccal cusps.
Apparently no trigonid basin. Talonid basin appears to
have been truncated lingually to midline.
RI1 probably unerupted; root less than half
formed. Quite tall crowned, narrow, with gentle mesial
flare and only slightly more marked distal flare. Thick
b/l toward neck, with noticeably convex buccal and
deeply convex lingual surfaces that rapidly converge to
incisal edge. Incisal edge bears a few mamelons. Thick,
incisally tapering margocristae are confluent around a
modest lingal tubercle.REFERENCESChen, T. et. al. 2001. The problems in ESR dating of tooth
enamel of Early Pleistocene and the age of Longgupo.
Quat. Sci. Rev. 20: 1041-1045.
Huang, W. et al. 1991. Wushan Hominid Site. Beijing,
Ocean.
Huang, W. et al. 1995. Early Homo and associated artifactsSchwartz, J. and I. Tattersall. 1996. Whose teeth? NatureWang, Q and Tobias, P. V. 2000. Recent advances in
from Asia. Nature 378: 275-278.381: 201-202.Chinese palaeoanthropology. S. A’. J. Sci. 96: 9-10.
Repository
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