A revision of Taeniolabis (Mammalia: Multituberculata), with a new species from the Puercan of eastern Montana

1987 ◽  
Vol 61 (4) ◽  
pp. 794-808 ◽  
Author(s):  
Nancy B. Simmons
Keyword(s):  
New Species ◽  
New Mexico ◽  
Type Species ◽  
San Juan ◽  
General Morphology ◽  
San Juan Basin ◽  
Stratigraphic Unit ◽  
Early Paleocene ◽  
New Type ◽  
A New Species

The largest known member of the mammalian order Multituberculata is the taeniolabidid Taeniolabis, which is known from Puercan (early Paleocene) localities in northern New Mexico, Utah, Montana, and southern Saskatchewan. A locality in the Ludlow Formation of southeastern Montana has produced remains of a new species, T. lamberti n. sp., which is based on a well-preserved dentary with teeth. Isolated teeth from the Tullock Formation of northeastern Montana are referred to T. lamberti n. sp. and Taeniolabis sp.Taeniolabis triserialis, known exclusively from the San Juan Basin, New Mexico, is shown to be a junior synonym of T. taoensis. Taeniolabis sulcatus, the type species of the genus, is recognized as a nomen dubium and is synonymized with T. taoensis based on general morphology and occurrence in the same stratigraphic unit and collecting area (lower part of the Nacimiento Formation, San Juan Basin, New Mexico). The name T. taoensis is retained for this taxon in the interest of nomenclatorial stability. These synonymies limit to one the number of species of Taeniolabis recognized in the San Juan Basin, New Mexico. It is proposed that T. taoensis be designated the new type species of the genus Taeniolabis.

Endocranial Cast of an Early Paleocene Crocodilian from the San Juan Basin, New Mexico

Copeia ◽  
1983 ◽  
Vol 1983 (3) ◽  
pp. 842 ◽  
Author(s):  
Glenn W. Storrs ◽  
Spencer G. Lucas ◽  
Robert M. Schoch
Keyword(s):  
New Mexico ◽  
San Juan ◽  
San Juan Basin ◽  
Early Paleocene

Rhynchocyrtus gen. nov. (Collembola, Entomobryidae) from the Southeast and Northeast Brazilian regions

Zootaxa ◽  
2007 ◽  
Vol 1660 (1) ◽  
pp. 45-51
Author(s):  
MARIA CLEIDE DE MENDOÇA ◽  
LILIANE HENRIQUES FERNANDES
Keyword(s):  
New Species ◽  
Rio De Janeiro ◽  
New Record ◽  
National Park ◽  
Type Species ◽  
Northeast Region ◽  
New Type ◽  
A New Species

Rhynchocyrtus gen. nov. is described and illustrated with a new type species: Rhynchocyrtus klausi sp. nov. from National Park of Tijuca (Rio de Janeiro, RJ, Brazil). This work also includes a new record of Rhynchocyrtus gen. nov. and a new species from a remnant rainforest area of the Northeast region, in Pernambuco State, Brazil.

New viverravids from the Torrejonian (Middle Paleocene) of Kutz Canyon, New Mexico and the oldest skull of the order Carnivora

2002 ◽  
Vol 76 (6) ◽  
pp. 1091-1101 ◽  
Author(s):  
T. J. Meehan ◽  
Robert W. Wilson
Keyword(s):  
New Species ◽  
New Mexico ◽  
San Juan ◽  
San Juan Basin ◽  
Three New Species

Three new species of Viverravidae (Carnivora: Miacoidea) are described: Protictis simpsoni, P. minor, and Bryanictis paulus. Holotypes and referred specimens are from the Angel Peak area, Kutz Canyon, San Juan Basin, New Mexico and are of middle Torrejonian age (middle Paleocene). The holotype of Protictis simpsoni includes a skull—the oldest known skull of the Order Carnivora. The locality is narrowly restricted stratigraphically and geographically, and specimens are better preserved than most other viverravid specimens of San Juan Basin strata.

New remains and species of the ‘condylarth’ genus Escribania (Mammalia: Didolodontidae) from the Palaeocene of Patagonia, Argentina

2007 ◽  
Vol 98 (02) ◽  
pp. 127-138 ◽  
Author(s):  
Javier N. Gelfo ◽  
Edgardo Ortiz-Jaureguizar ◽  
Guillermo W. Rougier
Keyword(s):  
New Species ◽  
Type Species ◽  
Third Molar ◽  
South American ◽  
Early Paleocene ◽  
New Material ◽  
Homologous Structure ◽  
Bona Fide ◽  
Early Radiation ◽  
A New Species

ABSTRACTThe Punta Peligro fauna includes some of the oldest Cenozoic South American mammals, and the oldest ones for Patagonia. In addition to frogs, turtles, and crocodiles, an unusual mammalian assemblage is formed by a mixture of Mesozoic lineages of Gondwanan origin and therians (eutherians and metatherians) derived from Laurasian immigrants. This paper describes new remains of the Didolodontidae ‘condylarth’ genusEscribaniaBonaparte, Van Valen & Kramarz, 1993. The new material includes an isolated right lower third molar with talonid morphology different from the homologous structure of the type speciesEscribania chubutensisBonaparte, Van Valen & Kramarz, 1993, justifying the recognition of a new species. The derived nature of the didolodontid ‘condylarths’ from the Banco Negro Inferior, their differences with the Mioclaenidae Kollpaniinae from the early Paleocene of Tiupampa, and the record ofbona fidelitoptherns in the Banco Negro Inferior (BNI) suggest an early radiation of the panameriungulates.

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