The American Naturalist, Volume 21Essex Institute, 1887 |
Dari dalam buku
Hasil 1-5 dari 11
Halaman 992
... molars . These cause the crown of the inferior molar to pursue a curved path across the upper , so that when the external cusp of the inferior molar is deflected forwards by the intermediate cusp of the superior , the inner cusp of the ...
... molars . These cause the crown of the inferior molar to pursue a curved path across the upper , so that when the external cusp of the inferior molar is deflected forwards by the intermediate cusp of the superior , the inner cusp of the ...
Halaman 993
... inferior molars . That no great modification of known forms ( as Lambdotherium in the Chalicotheriida , and ... molar can be modified into the V - bearing type may be seen by comparing the inferior molars of Hyracotherium with those of a ...
... inferior molars . That no great modification of known forms ( as Lambdotherium in the Chalicotheriida , and ... molar can be modified into the V - bearing type may be seen by comparing the inferior molars of Hyracotherium with those of a ...
Halaman 994
A. No diastemata . a . Fourth inferior premolar unlike the first true molar . Last inferior molar with five lobes ; superior premolars four ; ........ AA . A diastema behind the first premolar in both jaws . a . Last inferior premolar ...
A. No diastemata . a . Fourth inferior premolar unlike the first true molar . Last inferior molar with five lobes ; superior premolars four ; ........ AA . A diastema behind the first premolar in both jaws . a . Last inferior premolar ...
Halaman 996
... distal end of astragalus and calcaneum . and in the succeeding genera the first premolars are lost . In Hyrachyus the heel of the last inferior molar vanishes , while the nasal bones bear traces of dermal horns in Colonoceras ( Marsh ) ...
... distal end of astragalus and calcaneum . and in the succeeding genera the first premolars are lost . In Hyrachyus the heel of the last inferior molar vanishes , while the nasal bones bear traces of dermal horns in Colonoceras ( Marsh ) ...
Halaman 997
... molars from below ; lower figure , left inferior molars from above ; natural size . Original ; from Wasatch bed of Wyoming . AOODS FIG . 9. Heptodon ventorum Cope , superior molars of left side , natural size . Original ; from Wind ...
... molars from below ; lower figure , left inferior molars from above ; natural size . Original ; from Wasatch bed of Wyoming . AOODS FIG . 9. Heptodon ventorum Cope , superior molars of left side , natural size . Original ; from Wind ...
Edisi yang lain - Lihat semua
Istilah dan frasa umum
Amer AMERICAN NATURALIST animals appear Artiodactyla Bering Island bones botany breed called cells character chemical color compounds conclusions Condylarthra contains crystals cusps described dike E. D. Cope Eocene evolution eyes facts fauna feet figures fossils four Gard genera genus geological geologists geology Göhrde groups Heptodon hornblende hornless stags horns hundred Hyracotherium Ichthyosaurus incisors inferior molar infra-spinous insects Island J. B. LIPPINCOTT COMPANY known Lambdotherium larvæ lower Menodus mineral Miocene molars natural North notes observed occur original paper Philadelphia plane plants plates polled cattle pollinia portion premolars present probably Proc Prof Professor Protohippus published recently region represented River rocks sandstone says scapular scapular index schists scientific sea-cow sections seen side skull species specimens Spiders structure student superior molars synonymy Taconic teeth tion varieties Vilmorin XXI.-NO