中生代鸟类牙齿的退化及其可忽略的体重效应

周亚纯, 舒柯文, 张福成

Negligible effect of tooth reduction on body mass in Mesozoic birds

ZHOU Ya-Chun, Corwin SULLIVAN, ZHANG Fu-Cheng

Table 1 Fossil birds and dentition (both sides) measured in this study

Taxa Specimens Premaxillary teeth Maxillary teeth Dentary teeth Archaeopteryx London specimen1) 1 3 0 Berlin specimen1) 4 2 2 Jeholornis IVPP V 13274 0 0 3 IVPP V 14978 0 1 0 Sapeornis IVPP V 13275 3 1 0 IVPP V 13276 4 4 0 Longipteryx IVPP V 12325 1 0 1 Longirostravis IVPP V 11309 4 0 5 Pengornis IVPP V 15336 1 2 1 Cathayornis IVPP V 9769 3 0 2 Eoenantiornis IVPP V 10533 4 0 0 Longusunguis IVPP V 17964 3 1 10 Parabohaiornis IVPP V 18691 3 4 6 Bohaiornis IVPP V 17963 4 2 6 Yanornis IVPP V 12558 2 3 4 Tianyuornis STM 7-53 0 1 1