Prosynthetoceras

Prosynthetoceras Temporal range: Miocene PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Artiodactyla
Suborder:	Tylopoda
Family:	†Protoceratidae
Genus:	†Prosynthetoceras
Species
P. francisi P. orthrionanus P. texanus
Range of Prosynthetoceras based on fossil record

Prosynthetoceras is an extinct genus of Artiodactyla, of the family Protoceratidae, endemic to North America from the early Miocene epoch (Hemingfordian to Barstovian stages) 20.6—13.6 Ma, existing for approximately 7 million years.^[1]

Taxonomy

Prosynthetoceras was named by Patton (1967) [named as subgenus of Synthetoceras by Frick 1937; raised to genus level (?)]. It is not extant. It was assigned to Protoceratidae by Patton (1967) and Carroll (1988); and to Synthetoceratini by Webb (1981), Prothero (1998), Webb et al. (2003) and Prothero and Ludtke (2007).^[2][3][4][5]

Morphology

In appearance, Prosynthetoceras looked much like Syndyoceras, Kyptoceras, and Synthetoceras with rostral or snout horns and cranial horns above the orbital sockets.

Body mass

Four fossil specimens of Prosynthetoceras were measured by M. Mendoza, C. M. Janis, and P. Palmqvist for body mass.^[6]

• Specimen 1: 95.5 kg (210 lb)
• Specimen 2: 88.2 kg (190 lb)
• Specimen 3: 108.2 kg (240 lb)
• Specimen 4: 78.9 kg (170 lb)

References