Also known as UCMP V2202, LACM (CIT) 441

Where: Los Angeles County, California (34.4° N, 118.4° W: paleocoordinates 34.1° N, 116.5° W)

• coordinate estimated from map

When: Towsley Formation, Messinian (7.2 - 5.3 Ma)

• Pico Formation according to Kellogg, 1929; changed to Towsley Formation based on Whitmore & Barnes, 2008; age after Beyer et al., 2009; age after Fordyce & Marx (2013)

•

•Though originally reported as having been recovered from the Early Pliocene Pico Formation [169], the holotype skull more likely derives from the basal part of the Towsley Formation [126], which correlates with the Delmontian benthic foraminiferal stage (7.7–5.2 Ma) [70, 172]. Strontium dates from near the base of the formation range give a best estimate of 6.3 ± 0.3 Ma, whereas samples from the overlying Pico Formation provide a minimum age estimate of 5.2 ± 0.3 or 5.5 ± 0.4 Ma [70]. Together, these dates imply late Messinian (6.3–5.3 Ma) for the holotype. (Marx & Fordyce, 2015).

• formation-level stratigraphic resolution

Environment/lithology: basinal (siliceous); calcareous sandstone

Size class: macrofossils

Preservation: original phosphate

Reposited in the UCMP

Collection methods: surface (in situ),

Primary reference: R. Kellogg. 1929. A new cetothere from southern California. University of California Publications in Geological Sciences 18(15):449-457 [M. Uhen/M. Uhen/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 45499: authorized by Mark Uhen, entered by Mark Uhen on 26.10.2004

Creative Commons license: CC BY (attribution)