Lawrence Canyon 3 (Pliocene of the United States)

Also known as LACM 4301, UCMP V68106, SDSNH 2643

Where: San Diego County, California (33.2° N, 117.4° W: paleocoordinates 33.0° N, 116.1° W)

• coordinate based on unpublished field data

• outcrop-level geographic resolution

When: San Mateo Formation, Zanclean (5.3 - 3.6 Ma)

• Hemphillian: Domning (1978) states the age of this collection is "Middle Pliocene"

• formation-level stratigraphic resolution

Environment/lithology: estuary or bay; sandstone and conglomerate

• estuarine to fluvial

Size class: macrofossils

Preservation: original phosphate

Reposited in the LACM, UCMP

Collection methods: surface (in situ),

Primary reference: L. G. Barnes, H. Howard, J. H. Hutchison and B. J. Welton. 1981. The vertebrate fossils of the marine Cenozoic San Mateo Formation at Oceanside, California. Geologic Investigations of the Coastal Plain 53-70 [M. Uhen/M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 50068: authorized by Mark Uhen, entered by Mark Uhen on 05.05.2005, edited by John Alroy

Creative Commons license: CC BY (attribution)

Taxonomic list

• Lawrence Canyon Local Fauna
unclassified
  -
Chondrichthyes
 Squatiniformes - Squatinidae
Squatina sp. Dumeril 1806 angel shark
 Myliobatiformes - Dasyatidae
Dasyatidae indet. Jordan 1888 whiptail stingray
 Myliobatiformes -
 Lamniformes - Otodontidae
"Carcharodon megalodon" = Otodus megalodon
"Carcharodon megalodon" = Otodus megalodon Agassiz 1843 megalodon
Also studied in Pimiento and Balk
 Lamniformes - Lamnidae
"Isurus cf. oxyrhynchus" = Isurus oxyrinchus, Carcharodon sulcidens
"Isurus cf. oxyrhynchus" = Isurus oxyrinchus Rafinesque 1810 mako shark
Carcharodon sulcidens Agassiz 1843 white shark
 Carchariniformes - Carcharhinidae
Prionace sp. Cantor 1849 blue shark
Carcharhinus sp. de Blainville 1816 requiem shark
 Pristiophoriformes - Pristiophoridae
Pristiophorus sp. Bleeker 1859 saw shark
 Chimaeriformes - Chimaeridae
Actinopteri
 Teleostei -
 Labriformes - Labridae
"cf. Pimelometopon sp." = Semicossyphus
"cf. Pimelometopon sp." = Semicossyphus G√ľnther 1861 sheepshead
Aves
  -
Aves indet.2 Linnaeus 1758 bird
 Charadriiformes - Panalcidae
Mancalla sp. Lucas 1901 auk
Mancalla cf. cedrosensis3 Howard 1971 auk
Mancalla diegensis3 Miller 1937 auk
Cepphus sp.3 Moehring 1758 auk
Mancalla milleri3 Howard 1970 shorebird
 Accipitriformes - Accipitridae
Accipitridae indet. Viellot 1816 hawk
 Suliformes - Sulidae
Sulidae indet.3 Reichenbach 1849 booby
Mammalia
 Sirenia - Dugongidae
Hydrodamalis cuestae Domning 1978 Cuesta sea cow
 Perissodactyla - Equidae
Equini indet.1 Quinn 1955 horse
possibly Dinohippus
 Carnivora - Odobenidae
Odobeninae indet. Allen 1880 walrus
 Carnivora - Otariidae
Otariinae indet. Gray 1825 eared seal
 Ungulata - Camelidae
Camelidae indet. Gray 1821 camel
 Cetacea -
Mysticeti indet. Cope 1891 whale
 Cetacea - Cetotheriidae
Nannocetus sp. Kellogg 1929 whale
 Cetacea -
Odontoceti indet. Flower 1867 toothed whale
Scaldicetus cf. grandis Du Bus 1872 toothed whale
 Cetacea - Delphinidae
Delphinidae indet. Gray 1821 dolphin
 Cetacea - Phocoenidae
Phocoenidae indet. Gray 1825 porpoise