Aliso Viejo (Miocene to of the United States)

Also known as LACM 7506, OCPC 1002

Where: Orange County, California (33.6° N, 117.7° W: paleocoordinates 32.9° N, 113.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: lower Member (Monterey Formation), Langhian to Langhian (16.0 - 11.6 Ma)

• late Miocene, correlated with the Mohnian foraminiferal stage and ‘‘Margaritan’’ provisional megainvertebrate stage (Addicott, 1972; Barnes, 1977, 1985) and approximately 10 to 11 million years old (Fig. 2).

• group of beds-level stratigraphic resolution

Environment/lithology: slope or ramp reef; siltstone and diatomite

• deeper shelf or upper slope depths
• finely laminated, semiconcretionary diatomites, mudstones, and siltstones

Size class: macrofossils

Primary reference: L. G. Barnes. 2013. A new genus and species of Late Miocene paleoparadoxiid (Mammalia, Desmostylia) from California. Contributions in Science 521:51-114 [M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 151009: authorized by Mark Uhen, entered by Mark Uhen on 19.09.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Chondrichthyes
 Carcharhiniformes - Galeocerdidae
Galeocerdo aduncus
Galeocerdo aduncus Agassiz 1835 tiger shark
Mammalia
 Carnivora - Desmatophocidae
Allodesmus sp.
Allodesmus sp. Kellogg 1922 pinniped
 Carnivora - Odobenidae
Neotherium sp.
Neotherium sp. Kellogg 1931 walrus
 Cetacea -
Odontoceti indet.
Odontoceti indet. Flower 1867 toothed whale
 Cetacea - Allodelphinidae
Zarhinocetus errabundus
Zarhinocetus errabundus Kellogg 1931 toothed whale
 Perissodactyla - Desmostylidae
Desmostylus sp.
Desmostylus sp. Marsh 1888 desmostylian
 Perissodactyla - Paleoparadoxiidae
Neoparadoxia cecillialina, Neoparadoxia cecilialina n. gen. n. sp.
Neoparadoxia cecilialina n. gen. n. sp. Barnes 2013 desmostylian