^-^5 Vol. 81, pp. 629-634 30 December 1968 PROCEEDINGS OF THE BIOLOGICAL SOCIETY OF WASHINGTON A NEW PRIMATE FROM THE TORREJON MIDDLE PALEOCENE OF THE SAN JUAN BASIN, NEW MEXICO By C. Lewis Gazin Smithsonian Institution, Washington, D. C. Recent review of Paleocene materials from the San Juan Basin of New Mexico, that had been set aside for further study, disclosed the presence of certain forms new to the Torrejon fauna. One of these is a moderately large primate, which seems, among other Paleocene forms, to be most closely related to Paromomys, first described by Gidley (1923) from the Fort Union beds in Montana, and further investigated by Simpson ( 1937 and 1955 ) . Primates had not been known from the Torrejon beds of the Nacimiento formation in New Mexico until reported from the Angel Peak basin by R. W. Wilson (1951 and 1956). These were cited (1956) only as "Pakiechthon?, n. sp." and "phenacolemurid, n. gen. and sp." without description, but mentioned as found in the Deltatherium or lower zone of the Torrejon. Primate remains found by Franklin Pearce and myself in 1949 were obtained from the upper or Pantolambda zone in the Arroyo Torrejon, essentially the type section or area for the middle Paleocene. I have not examined the Angel Peak materials but those from the Arroyo Torrejon would not be referred to Palaechthon. Only the single speci-men cited as "phenacolemurid" remains in doubt as to the possibility of its representing the form described below. Family Paromomyidae Simpson, 1940 Torrejonia new genus Type: Torrejonia wilsoni^ new species. Generic characters: Close to Paromoniys but lower premolars more 1 Named for Robert W. Wilson who was first to recognize primates in the Torrejon beds. 58— Proc. Biol. Soc. Wash., Vol. 81, 1968 (629)
BioStor
