LACM 1945 (Miocene to of the United States)

Also known as Leisure World

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

• coordinate estimated from map

• outcrop-level geographic resolution

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

• Late Miocene?

Environment/lithology: marine; diatomaceous siltstone

Size class: macrofossils

Primary reference: H. Howard. 1966. A possible ancestor of the Lucas Auk (Family Mancallidae) from the Tertiary of Orange County, California. Los Angeles County Museum Contributions in Science 101:1-8 [M. Uhen/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 121152: authorized by Mark Uhen, entered by Mark Uhen on 29.11.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Aves
 Odontopterygiformes - Pelagornithidae
Osteodontornis orri1
Osteodontornis orri1 Howard 1957 bird
 Anseriformes - Anatidae
Anserinae indet.1, Presbychen abavus1
Anserinae indet.1 Vigors 1825 goose
Presbychen abavus1 Wetmore 1930 duck
 Suliformes - Sulidae
Sulidae indet.1, Microsula sp.1, "Morus lompocanus" = Moris lompocana1, ? Miosula sp.1
Sulidae indet.1 Reichenbach 1849 booby
Microsula sp.1 Wetmore 1938 booby
"Morus lompocanus" = Moris lompocana1 Miller 1925 gannet
? Miosula sp.1 Miller 1925 booby
 Procellariiformes - Procellariidae
Fulmarus hammeri n. sp.1, Puffinus sp.1, Puffinus calhouni n. sp.1, Puffinus priscus1
Fulmarus hammeri n. sp.1 Howard 1968 petrel
Puffinus sp.1 Brisson 1760 shearwater
Puffinus calhouni n. sp.1 Howard 1968 shearwater
Puffinus priscus1 Miller 1961 shearwater
 Procellariiformes - Diomedeidae
Diomedea sp.1
Diomedea sp.1 Linnaeus 1758 albatross
 Charadriiformes - Panalcidae
Alcodes ulnulus n. sp.1
Alcodes ulnulus n. sp.1 Howard 1968 shorebird
 Charadriiformes - Alcoidae
Alcidae sp.1, Alca sp.1, Praemancalla lagunensis n. gen. n. sp., Cerorhinca sp.1, Aethia rossmoori n. sp.1
Alcidae sp.1 Leach 1820 auk
Alca sp.1 Linnaeus 1758 auk
Praemancalla lagunensis n. gen. n. sp. Howard 1966 auk
Cerorhinca sp.1 Bonaparte 1828 auk
Aethia rossmoori n. sp.1 Howard 1968 auklet
Mammalia
 Sirenia - Dugongidae
Dusisiren sp.2
Dusisiren sp.2 Domning 1978 dugong
 Carnivora - Otariidae
aff. Pithanotaria sp.2
aff. Pithanotaria sp.2 Kellogg 1925 eared seal
 Carnivora - Odobenidae
Odobenidae indet.2
Odobenidae indet.2 Allen 1880 walrus
 Carnivora - Desmatophocidae
Allodesmus sp.2
Allodesmus sp.2 Kellogg 1922 pinniped
 Perissodactyla -
Desmostylia indet.
Desmostylia indet. Reinhart 1953 desmostylian
 Perissodactyla - Desmostylidae
Desmostylus sp.2
Desmostylus sp.2 Marsh 1888 desmostylian
 Cetacea -
Odontoceti indet.2
Odontoceti indet.2 Flower 1867 toothed whale
 Cetacea - Ziphiidae
aff. Messapicetus sp.2
aff. Messapicetus sp.2 Bianucci et al. 1992 beaked whale
 Cetacea -
Delphinoidea sp.2
Delphinoidea sp.2 Flower 1865 toothed whale
 Cetacea - Phocoenidae
Phocoenidae indet.2
Phocoenidae indet.2 Gray 1825 porpoise
 Cetacea - Monodontidae
Monodontidae indet.2
Monodontidae indet.2 Gray 1821 toothed whale
 Cetacea - Albireonidae
Albireonidae indet.2
Albireonidae indet.2 Barnes 1984 toothed whale
 Cetacea - Kentriodontidae
aff. Kampholophos sp.2
aff. Kampholophos sp.2 Rensberger 1969 toothed whale
 Cetacea -
Panphyseteroidea indet.2, Mysticeti indet.2
Panphyseteroidea indet.2 Velez-Juarbe et al. 2015 toothed whale
Mysticeti indet.2 Cope 1891 whale
 Cetacea - Cetotheriidae
Cetotheriidae indet.2
Cetotheriidae indet.2 Brandt 1872 whale
Gnathostomata
  -
Chondrichthyes indet.
Chondrichthyes indet. Huxley 1880 cartilaginous fish
1Howard 1968; 2Parham et al. 2022