North American Eocene Sea Cows (Mammalia: Sirenia)

  title={North American Eocene Sea Cows (Mammalia: Sirenia)},
  author={Daryl Domning and Gary S. Morgan and Clayton Edward Ray},
Domning, Daryl P., Gary S. Morgan, and Clayton E. Ray. North American Eocene Sea Cows (Mammalia: Sirenia). Smithsonian Contributions to Paleobiology, number 52, 69 pages, 34 figures, 4 tables, 1982.—The record of Eocene sea cows in North America is reviewed in detail, and that of the world is summarized. The North American record includes some 20 localities, mostly yielding fragments identifiable only as sirenian. Of these, the most extensive materials are a partial skeleton from the Cook… 

Libysiren sickenbergi, gen. et sp. nov.: A New Sirenian (Mammalia, Protosirenidae) from the Middle Eocene of Libya

This animal is the largest known protosirenid, and the largest Eocene sirenian known to date (condylobasal length >420 mm), and may shed crucial light on the still-mysterious origins of the trichechids (manatees).

Fossil Sirenia of the West Atlantic and Caribbean region. I. Metaxytherium floridanum Hay, 1922

The vast majority of the abundant fossil sirenian remains from the Bone Valley phosphate mining district (chiefly in Polk and Hillsborough counties, Florida) represent a single species of dugongid, Metaxytherium floridanum Hay, 1922, which seems to represent a slightly more advanced stage of evolution.

Fossil Sirenia of the west Atlantic and Caribbean region. VI. Crenatosiren olseni (Reinhart, 1976)

ABSTRACT The dugongid sirenian species Halitherium olseni Reinhart, 1976 was based on a skull and skeleton of latest Oligocene age from beds of the Parachucla Formation, exposed on the Suwannee River

An Extinct Map Turtle Graptemys (Testudines, Emydidae) from the Late Pleistocene of Florida

ABSTRACT Graptemys kerneri, n. sp., from the Suwannee River drainage of north-central Florida, represents the most southeastern occurrence of the genus. This species is morphologically and

Fossil sirenia of the west Atlantic and Caribbean region. V. The most primitive known sirenian, Prorastomus sirenoides Owen, 1855

Although Prorastomus appears to have some autapomorphies that exclude it from the direct ancestry of other sirenians, it is the best available approximation to a structural ancestor of the Sirenia, and is more appropriate than any Recent species as a representative of the order in analyzing the relationships of sirenian to other mammals.

Eotheroides lambondrano, New Middle Eocene Seacow (Mammalia, Sirenia) from the Mahajanga Basin, Northwestern Madagascar

ABSTRACT The first diagnostic sirenian material from Madagascar and, more broadly, the first diagnostic pre-Pleistocene Cenozoic mammal material recovered from the island is reported. Eotheroides


Abstract All known Pleistocene fossils of manatees from North America are conspecific with the living West Indian manatee, Trichechus manatus. However, those of late Pleistocene (late Rancholabrean)

The most northerly record of the sirenian Protosiren and the possible polyphyletic evolution of manatees and dugongs

Newly discovered remains of the early Middle Eocene (Lutetian) sirenian Protosiren (Protosirenidae) in shark tooth rich conglomerates from a coastal delta environment northwest of the European

A New Archaeocete and Other Marine Mammals (Cetacea and Sirenia) from Lower Middle Eocene Phosphate Deposits of Togo

Lutetian lower middle Eocene phosphate deposits of Kpogamé-Hahotoé in Togo yield new information about whales and sea cows in West Africa, showing that both cetaceans and sirenians were widely distributed geographically by this time.

Uintan land mammals (excluding rodents) from an estuarine facies of the Laredo Formation (Middle Eocene, Claiborne Group) of Webb County, Texas

A newly discovered vertebrate fossil assemblage, the Casa Blanca local fauna, comes from the Laredo Formation, Claiborne Group, of Webb County, Texas, and is the first reported Eocene land-mammal