Mission Viejo (Miocene to of the United States)

Also known as SDNHM 4984, LACM 6064

Where: Orange County, California (33.6° N, 117.7° W: paleocoordinates 32.8° N, 112.4° W)

• coordinate estimated from map

When: Topanga Formation, Burdigalian to Burdigalian (20.4 - 13.8 Ma)

• Relizian and/or Luisian benthic foraminifera and mollusks assignable to the Temblor Provincial Marine Molluscan Stage have also been reported from these localities in the ‘‘Topanga’’ Formation [31].

• formation-level stratigraphic resolution

Environment/lithology: marine; poorly lithified, medium-grained, coarse, gray, yellow sandstone

• marine bonebed within a gray to yellow, friable, medium to coarse-grained sandstone

Size class: macrofossils

Collection methods: SDNHM, San Diego Natural History Museum

Primary reference: R. W. Boessenecker and M. Churchill. 2013. A Reevaluation of the Morphology, Paleoecology, and Phylogenetic Relationships of the Enigmatic Walrus Pelagiarctos. PLoS One 8(1):e5411 [M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 138432: authorized by Mark Uhen, entered by Mark Uhen on 18.01.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

 Carnivora - Odobenidae
Pelagiarctos sp. Barnes 1988 walrus
 Carnivora - Otariidae
Eotaria crypta n. gen. n. sp.
Eotaria crypta n. gen. n. sp. Boessenecker and Churchill 2015 eared seal