El Toro (Neogene of the United States)

Where: Orange County, California (33.6° N, 117.8° W: paleocoordinates 33.2° N, 115.3° W)

• coordinate based on political unit

When: Monterey Formation, Hemphillian (10.3 - 4.9 Ma)

• said to be Hemphillian, Barnes (1977) clarifies that the formation at this locality is Monterey not Capistrano as originally stated by Savage and Barnes (1972).

Environment/lithology: marginal marine; shale

Size class: macrofossils

Primary reference: S. W. Conkling. 1991. Report on a new Hemphillian (Miocene) fauna from the El Toro area of Orange County, California, and a comparison of it with Hemphillian faunas from the Mojave Desert. San Bernardino County Museum Association Quarterly 38(2):1-46 [J. Alroy/J. Alroy/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 19342: authorized by John Alroy, entered by John Alroy on 26.03.1995, edited by Mark Uhen

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Pholadida - Myidae
Mya dickersoni3 Clark 1915 softshell clam
 Cardiida - Mactridae
Pseudocardium densatum3 Conrad 1856 clam
 Cardiida - Tellinidae
"Macoma secta" = Macoma (Rexithaerus) secta3
"Macoma secta" = Macoma (Rexithaerus) secta3 Conrad 1837 tellin clam
Mammalia
 Sirenia - Dugongidae
Dioplotherium allisoni3 Kilmer 1965 dugong
 Perissodactyla - Equidae
Pliohippus sp. Marsh 1874 horse
 Carnivora - Canidae
Borophagus sp.1 Cope 1892 bone-crushing dog
 Mysticeti -
Mysticeti indet.2 whale
LACM 40930, 66321
 Odontoceti -
Odontoceti indet.2 toothed whale
LACM 27289, 62300, 65674
Scaldicetus sp.2 Du Bus 1867 toothed whale
LACM 4088, 65653-65663
 Delphinoidea - Monodontidae
Delphinapterinae indet.2 Gill 1871 toothed whale
LACM 27290
 Delphinoidea - Phocoenidae
"Loxolithax stocktoni" = Salumiphocaena stocktoni2
"Loxolithax stocktoni" = Salumiphocaena stocktoni2 Wilson 1973 porpoise
LACM 65668-65673
 Odontoceti -
aff. Pithanodelphis sp.2 Abel 1905 toothed whale
LACM 26635, 29087, 30093)
Liolithax sp.2 Kellogg 1931 toothed whale
LACM 30160
 Odontoceti - Kentriodontidae
aff. Kampholophos sp.2 Rensberger 1969 toothed whale
LACM 65677, 65678
 Odontoceti - Ziphiidae
Ziphiidae indet.2 Gray 1850 beaked whale
LACM 52148