Locality 11: Messinian, Mexico

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Cetacea - Balaenopteridae
Balaenoptera sp. Lacépède 1804
Barnes 1991
possibly from 45460 instead of 45458
Mammalia - Cetacea
aff. Plesiocetus sp. Van Beneden 1859
Barnes 1991 1 specimen
nomen dubium belonging to Mysticeti
possibly from 45460 instead of 45458
Mammalia - Cetacea - Lipotidae
Parapontoporia pacifica n. gen., n. sp. Barnes 1984
1 specimen
Mammalia - Cetacea - Monodontidae
Denebola brachycephala n. gen., n. sp. Barnes 1984
1 specimen
Mammalia - Cetacea - Albireonidae
Albireo sp. Barnes 1984
Barnes 2008 1 specimen
Mammalia - Cetacea - Phocoenidae
Delphinoidea indet. Flower 1865
Barnes 1991
    = Phocoenidae indet. Gray 1825
Barnes 1991
Piscolithax boreios n. sp. Barnes 1984
1 specimen
Piscolithax tedfordi n. sp. Barnes 1984
1 specimen
Mammalia - Carnivora - Odobenidae
Aivukus cedrosensis n. gen., n. sp. Repenning and Tedford 1977
Repenning and Tedford 1977
possibly from 45460 instead of 45458
Dusignathinae indet. Mitchell 1968
Barnes 1991
possibly from 45460 instead of 45458
Dusignathus santacruzensis Kellogg 1927
Repenning and Tedford 1977 1 specimen
Mammalia - Carnivora - Otariidae
Thalassoleon mexicanus Repenning and Tedford 1977
Barnes 1991
possibly from 45460 instead of 45458
Reptilia - Charadriiformes - Alcidae
Mancalla cedrosensis Howard 1971
Barnes 1991
possibly from 45460 instead of 45458
? Synthliboramphus sp. Brandt 1837
Barnes 1991 54 specimens
possibly from 45460 instead of 45458
Cerorhinca minor Howard 1971
Barnes 1991 2 specimens
possibly from 45460 instead of 45458
Reptilia - Procellariidae
Puffinus sp. Brisson 1760
Barnes 1991 1 specimen
possibly from 45460 instead of 45458
Puffinus tedfordi Howard 1971
Barnes 1991 2 individuals
possibly from 45460 instead of 45458
Reptilia - Suliformes - Sulidae
Morus sp. Vieillot 1816
Barnes 1991 2 specimens
possibly from 45460 instead of 45458
Reptilia - Phoenicopteriformes - Palaelodidae
? Megapaloelodus opsigonus Brodkorb 1961
Barnes 1991 1 specimen
possibly from 45460 instead of 45458
Chondrichthyes - Lamniformes - Lamnidae
Carcharodon cf. carcharias (Linnaeus 1758)
Barnes 1991
possibly from 45460 instead of 45458
Chondrichthyes - Lamniformes - Otodontidae
Carcharocles megalodon (Agassiz 1835)
Barnes 1991 19 elements
recombined as Otodus megalodon
possibly from 45460 instead of 45458
Chondrichthyes - Carcharhiniformes - Carcharhinidae
Carcharhinus sp. de Blainville 1816
Barnes 1991 2 elements
possibly from 45460 instead of 45458
see common names

Geography
Country:Mexico State/province:Baja California
Coordinates: 28.1° North, 115.2° West (view map)
Paleocoordinates:26.7° North, 111.7° West
Basis of coordinate:based on political unit
Geographic resolution:local area
Time
Period:Neogene Epoch:Miocene
Stage:Messinian 10 m.y. bin:Cenozoic 6
Key time interval:Messinian
Age range of interval:7.24600 - 5.33300 m.y. ago
Age estimate:8 to 6 Ma (unknown)
Stratigraphy
Formation:Almejas Member:lower
Stratigraphy comments: Detailed stratigraphic column shown in Figure 2 of Barnes (1984). Max and min dates after Boessenecker (2013).
Lithology and environment
Primary lithology: not reported
Lithology description: no lithological description given
Environment:coastal indet.
Taphonomy
Modes of preservation:body,original phosphate
Size of fossils:macrofossils
Preservation of anatomical detail:good
Articulated whole bodies:none
Associated major elements:none
Disassociated major elements:many
Disassociated minor elements:some
Collection methods and comments
Collection methods:selective quarrying,field collection
Reason for describing collection:taxonomic analysis
Metadata
Database number:45458
Authorizer:M. Uhen Enterer:M. Uhen
Modifier:M. Uhen Research group:vertebrate
Created:2004-10-24 11:50:10 Last modified:2015-04-29 15:23:17
Access level:the public Released:2004-10-24 11:50:10
Creative Commons license:CC BY
Reference information

Primary reference:
11878. L. G. Barnes. 1984. Fossil odontocetes (Mammalia: Cetacea) from the Almejas Formation, Isla Cedros, Mexico. PaleoBios 42:1-46 [M. Uhen/M. Uhen/M. Uhen]

Secondary references:

12282 L. G. Barnes. 1991. The fossil marine vertebrate fauna of the latest Miocene Almejas Formation, Isla Cedros, Baja California, Mexico. Memorias Universidad Autonoma de Baja California Sur: Primera Reunion Internacional Sobre Geologia de la Peninsula de Baja California 147-166 [M. Uhen/M. Uhen/M. Uhen]
28389 L. G. Barnes. 2008. Miocene and Pliocene Albireonidae (Ceatcea, Odontoceti), Rare and unusual fossil dolphins from the Eastern North Pacific Ocean. Natural History of Los Angeles County Science Series 41:99-152 [M. Uhen/M. Uhen/P. Wagner]
16892 C. A. Repenning and R. H. Tedford. 1977. Otarioid seals of the Neogene. United States Geological Survey Professional Paper 992:1-93 [M. Uhen/M. Uhen/P. Holroyd]