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The trituberculate type of superior molar, and the origin of the quadrituberculate.
BY E. D. COPE OF PHILADELPHIA, PESX. In the lower eocene, Professor Cope
finds all the mammalian molar-teeth to be trituberculate. lie has now a complete ...
2
Transactions of the Linnean Society of London: Zoology
The crown presents the trituberculate * pattern in general common to the
insectivorous Dasyuridse and Didelphyidai, and also to the placental Talpidae,
the primitive Creodonta, and the Cretaceous Mammalia. It bears three main
cusps and an ...
Linnean Society of London,
1907
The crown presents the trituberculate * pattern in general common to the
insectivorous Dasyuridae and Didelphyidae, and also to the placental Talpidae,
the primitive Creodonta, and the Cretaceous Mammalia. It bears three main
cusps and ...
Linnean Society of London,
1907
4
Transactions of the Linnean Society of London: Zoology
The crown presents the trituberculate * pattern in general common to the
insectivorous Dasyuridae and Didelphyidai, and also to the placental Talpidse,
the primitive Creodonta, and the Cretaceous Mammalia. It bears three main
cusps and an ...
5
Lower Cretaceous Deposits in California and Oregon
Whitehouse Hyatt included in this family many Lower Cretaceous trituberculate
genera, not only belonging to the type of Ancyloceras matherom'anum d'Orbigny
and A. renauxianum d'Orbigny, but also other widely divergent forms. According ...
6
Evolutionary History of Bats: Fossils, Molecules and Morphology
Such a view was proposed first by Cope (1874, 1883) and Osborn (1888) within
the framework of the trituberculate theory of mammalian dental evolution. In its
final form (Osborn, 1897, reprinted in Osborn, 1907) the theory provided an ...
Gregg F. Gunnell, Nancy B. Simmons,
2012
7
Life's Splendid Drama: Evolutionary Biology and the ...
One influential product of Cope's work was his trituberculate theory of the
evolution of the mammalian teeth. He postulated a sequence of stages by which
additional cusps were added to the original reptilian cone- shaped tooth, the
starting ...
8
Entomologia Edinensis: Or A Description and History of the ...
Short and convex, shining black, head trituberculate, elytra punctate-striate and
of a pale griseous colour. 24-3 Fab. About the size of A. fimetarius : clypeus black
, trituberculate, with an obsolete cross ridge in front ; antenna' testaceous, the ...
James Wilson, James Duncan,
1834
9
Neues Jahrbuch für Geologie und Paläontologie: Abhandlungen
On the earliest preserved part with sculpture (from the diameter of about 17 mm),
merely numerous trituberculate major ribs are apparent. There are about 8 major
ribs per half of the ultimate whorl while on the inner whorl of diameter 35 mm, ...
10
Journal of the Academy of Natural Sciences of Philadelphia
Black, tip of the elytra, and feet rufous ; clypeus trituberculate. Inhabits the United
States. Scaraba'us stercoreus. Melsh. Catal. Body black: clypeus with numerous
distinct approximate punctures; three small tuberculi, placed in a transverse line,
...