Bulletin of the United States Geological and Geographical Survey of the Territories, 1. köide,1. numberU.S. Government Printing Office, 1874 |
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Page 13
... column from its anterior half . Both the internal columns are longitudinally oval and rather small , the anterior well sep- arated . The adjacent enamel border gives of the usual projecting fold . Outline of crown nearly quadrate . A ...
... column from its anterior half . Both the internal columns are longitudinally oval and rather small , the anterior well sep- arated . The adjacent enamel border gives of the usual projecting fold . Outline of crown nearly quadrate . A ...
Page 14
... columns are oval in section but may occasionally be subcylindric ; they are cylindric in P. labrosus . The first ... column is cylindric in all the teeth ; the posterior similar , but joint with its cres- cent by attrition in most of ...
... columns are oval in section but may occasionally be subcylindric ; they are cylindric in P. labrosus . The first ... column is cylindric in all the teeth ; the posterior similar , but joint with its cres- cent by attrition in most of ...
Page 15
... columns of the superior molars distinguishes it from Hippotherium , a form of P. per- ditus is described below , in which the columns are more distinct than in individuals heretofore known . The P. sejunctus is identical in measurements ...
... columns of the superior molars distinguishes it from Hippotherium , a form of P. per- ditus is described below , in which the columns are more distinct than in individuals heretofore known . The P. sejunctus is identical in measurements ...
Page 18
... columns of the molar teeth , with re- tardation of the growth of the lateral phalanges , would express the pro- cess of evolution of the modern types of horse . PROTOHIPPUS PERDITUS Leidy , Represented in the collections by the entire ...
... columns of the molar teeth , with re- tardation of the growth of the lateral phalanges , would express the pro- cess of evolution of the modern types of horse . PROTOHIPPUS PERDITUS Leidy , Represented in the collections by the entire ...
Page 19
... columns ( the anterior ) is not yet united with its corresponding crescent , and the borders of the lakes are more plicate than in more worn examples . PROTOHIPPUS PLACIDUS Leidy- A portion of the skeleton of this species was excavated ...
... columns ( the anterior ) is not yet united with its corresponding crescent , and the borders of the lakes are more plicate than in more worn examples . PROTOHIPPUS PLACIDUS Leidy- A portion of the skeleton of this species was excavated ...
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Common terms and phrases
alveoli angle angustidens anteroposterior articular face bones BRARY UNIVERSITY Brontotherium calcaneum CALIFOR CALIFORNIA CALIFORNIA SAN Camelida canine centrum cervical vertebræ coffin-bone Colorado condyles crassus crescent crest cuboid dentition Diameter proximal diastema DIEGO RSITY Dinictis distally dorsal E. D. Cope enamel facet Firehole River foramen formation Fossil Flora front genus Henry Gannett Hippotherium horse humerus Hypertragulus incisors inferior molar keel labrosus lakes last molar last premolar latter Leidy Leidy's Length crown Leptomeryx LIBRARY THE UNIVERSITY lobe mandible mandibular ramus maxillary median megalodus Merychippus metacarpals metapodial molar teeth occipital condyle Oreodon Paleontologist perditus phalange Pliocene Poëbrotherium posterior posteriorly premolar teeth PROCAMELUS Prof Protohippus ridge robustus SAN DIEGO CALIFORNIA SAN DIEGO ERSITY SAN DIEGO LIBRARY SAN DIEGO UNIVERSITY second premolar sejunctus SITY specimens superior molars superior premolar symphysis Synopsis Territories third molar transverse trochlear true molar tubercle tuberosity UNIVERSITY DIEGO UNIVERSITY LIBRARY UNIVERSITY SAN DIEGO VERSITY Vertebrata worn