Lawrence Canyon 3: Zanclean, California

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Hexacanthus sp.
aff. Stenodelphis sternbergi Gregory and Kellogg 1927
    = Odontoceti indet.
Barnes 1985
Barnes does not include this specimen in his reference list in Barnes 1985, so it is unclear what this specimen represents.
Chondrichthyes - Carcharhiniformes - Carcharhinidae
Prionace sp. Cantor 1849
Carcharhinus sp. de Blainville 1816
Chondrichthyes - Lamniformes - Lamnidae
Isurus cf. oxyrhynchus (Rafinesque 1810)
original and current combination Isurus oxyrinchus
Carcharodon sulcidens (Agassiz 1835)
synonym of Carcharodon carcharias
Chondrichthyes - Lamniformes - Otodontidae
Carcharodon megalodon (Agassiz 1835)
recombined as Otodus megalodon
Also studied in Pimiento and Balk
Chondrichthyes - Squatinidae
Squatina sp. Dumeril 1806
Chondrichthyes - Squalomorphii - Pristiophoridae
Pristiophorus sp. Bleeker 1859
Chondrichthyes - Myliobatiformes
Myliobatoidea indet.
Chondrichthyes - Myliobatiformes - Dasyatidae
Dasyatidae indet. Jordan 1888
Chondrichthyes - Chimaeriformes - Chimaeridae
Chimaeridae indet.
Actinopteri
Teleostei indet. Müller 1846
Actinopteri - Labriformes - Labridae
cf. Pimelometopon sp. Gill 1864
synonym of Semicossyphus
Actinopteri - Salmoniformes - Salmonidae
Smilodonichthys rastrosus Cavender and Miller 1972
recombined as Oncorhynchus rastrosus
Mammalia - Sirenia - Dugongidae
Hydrodamalis cuestae Domning 1978
Mammalia - Perissodactyla - Equidae
Pliohippus sp. Marsh 1874
possibly Dinohippus
    = Equini indet. Quinn 1955
Alroy 2011
Mammalia - Camelidae
Camelidae indet. Gray 1821
Mammalia - Cetacea
Odontoceti indet. Flower 1867
Mammalia - Cetacea - Delphinidae
Delphinidae indet. Gray 1821
Mammalia - Cetacea - Phocoenidae
Phocoenidae indet. (Gray 1825)
Mammalia - Cetacea
Scaldicetus cf. grandis (Du Bus 1872)
Mysticeti indet. Cope 1891
Mammalia - Cetacea - Cetotheriidae
Nannocetus sp. Kellogg 1929
Mammalia - Carnivora - Odobenidae
Odobeninae indet. Allen 1880
Mammalia - Carnivora - Otariidae
Otariinae indet. Gray 1825
Reptilia
Aves indet. Linnaeus 1758
Domning 1978
Reptilia - Charadriiformes - Alcidae
Mancalla sp. Lucas 1901
Mancalla cf. cedrosensis Howard 1971
Howard 1982
Cepphus sp. Moehring 1758
Howard 1982
Reptilia - Charadriiformes
Mancalla diegensis (Miller 1937)
Howard 1982
nomen dubium belonging to Panalcidae
Mancalla milleri Howard 1970
Howard 1982
nomen dubium belonging to Panalcidae
Reptilia - Accipitriformes - Accipitridae
Accipitridae indet. Viellot 1816
Reptilia - Suliformes - Sulidae
Sulidae indet. Reichenbach 1849
Howard 1982
see common names

Geography
Country:United States State/province:California County:San Diego
Coordinates: 33.2° North, 117.4° West (view map)
Paleocoordinates:33.0° North, 116.1° West
Basis of coordinate:unpublished field data
Geographic resolution:outcrop
Time
Period:Neogene Epoch:Pliocene
Stage:Zanclean 10 m.y. bin:Cenozoic 6
Key time interval:Zanclean
Age range of interval:5.33300 - 3.60000 m.y. ago
Age estimate:5.33 to 4.6 Ma (other)
Stratigraphy
Formation:San Mateo
Stratigraphic resolution:formation
Stratigraphy comments: Hemphillian: Domning (1978) states the age of this collection is "Middle Pliocene"
Lithology and environment
Primary lithology: sandstone
Secondary lithology: conglomerate
Includes fossils?Y
Environment:estuary/bay
Geology comments: estuarine to fluvial
Taphonomy
Modes of preservation:body,original phosphate
Size of fossils:macrofossils
Collection methods and comments
Collection methods:surface (in situ),field collection
Reason for describing collection:general faunal/floral analysis
Museum repositories:LACM,UCMP
Taxonomic list comments:Lawrence Canyon Local Fauna
Metadata
Also known as:LACM 4301, UCMP V68106, SDSNH 2643
Database number:50068
Authorizer:M. Uhen, J. Alroy Enterer:M. Uhen, J. Alroy
Modifier:M. Uhen Research group:vertebrate
Created:2005-05-05 12:15:58 Last modified:2019-02-19 12:26:47
Access level:the public Released:2005-05-05 12:15:58
Creative Commons license:CC BY
Reference information

Primary reference:
13448. 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]

Secondary references:

35631 J. Alroy. 2011. Further attempts at halting the inevitable backwards progress of bad taxonomy. [J. Alroy/J. Alroy]
11877 L. G. Barnes. 1985. Fossil pontoporiid dolphins (Mammalia: Cetacea) from the Pacific Coast of North America. Contributions in Science 363:1-34 [M. Uhen/M. Uhen/M. Uhen]
13595 R. W. Boessenecker, D. J. Eheret, D. J. Long, M. Churchill, E. Martin and S. J. Boessenecker. 2019. The Early Pliocene extinction of the mega-toothed shark Otodus megalodon: a view from the eastern North Pacific. PeerJ 7:e6088 [M. Uhen/M. Uhen/M. Uhen]
60295% 34240D. P. Domning. 1978. Sirenian evolution in the North Pacific Ocean. University of California Publications in Geological Sciences 118:1-176 [M. Uhen/M. Uhen/M. Uhen]
1945 H. Howard. 1982. Fossil birds from Tertiary marine beds at Oceanside, San Diego County, California, with discriptions of two species of the genera Uria and Cepphus (Aves: Alcidae). Contributions in Science, Natural History Museum of Los Angeles County 341:1-15 [J. Alroy/J. Alroy/M. Uhen]
49081 C. Pimiento and M. Balk. 2015. The extinct giant shark Carcharocles megalodon: A model for understanding deep-time body size trends of marine apex predators. [C. Jaramillo/C. Pimiento/C. Pimiento]