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On sexual dimorphism in Paleoparadoxia tabatai
Author(s) -
Hasegawa Yoshikazu,
Taketani Yojiro,
Taru Hajime,
Sakamoto Osamu,
Manabe Makoto
Publication year - 1994
Publication title -
island arc
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.554
H-Index - 58
eISSN - 1440-1738
pISSN - 1038-4871
DOI - 10.1111/j.1440-1738.1994.tb00130.x
Subject(s) - skull , sexual dimorphism , masticatory force , dentition , sagittal plane , anatomy , maxilla , geology , orthodontics , biology , medicine , zoology
Upon studying the well preserved skulls referred to Paleoparadoxia tabatai from Japan, the short and low skull of the Yanagawa specimen requires an explanation. Six cranial and dental characters lead us to suggest that the Yanagawa individual is a female while the Izumi, Ohnohara, and Itsukaichi skulls are male. The important characters in the Yanagawa skull are its shortness and shallow depth, less pronounced sagittal and nuchal crests, smaller zygoma, and the small dentition with especially poorly erupted canines, most of which are indicative of weak masticatory musculature.