A new Miocene enaliarctine pinniped of the genus Pteronarctos (Mammalia : Otariidae) from the Astoria formation, Oregon text Los Angeles Natural History Museum of Los Angeles County 1990 Ind 20 p. : ill. ; 25 cm.-- 20 p. : ill. ; 25 cm.-- BARNES, Lawrence G. MAMMALS OREGON 599(795) INLIS000000000002555 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)