Where: Baja California, Mexico (28.1° N, 115.2° W: paleocoordinates 26.7° N, 111.7° W)
• coordinate based on political unit
• local area-level geographic resolution
When: lower Member (Almejas Formation), Messinian (7.2 - 5.3 Ma)
• Detailed stratigraphic column shown in Figure 2 of Barnes (1984). Max and min dates after Boessenecker (2013).
Environment/lithology: coastal; lithology not reported
Size class: macrofossils
Preservation: original phosphate
Collection methods: quarrying,
Primary reference: 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]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 45458: authorized by Mark Uhen, entered by Mark Uhen on 24.10.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Aves | |
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Mammalia | |
Aivukus cedrosensis n. gen. n. sp.3 Repenning and Tedford 1977 walrus possibly from 45460 instead of 45458
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Denebola brachycephala n. gen. n. sp.
Denebola brachycephala n. gen. n. sp. Barnes 1984 toothed whale | |
Piscolithax tedfordi n. sp. Barnes 1984 porpoise
Piscolithax boreios n. sp. Barnes 1984 porpoise | |
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Parapontoporia pacifica n. gen. n. sp.
Parapontoporia pacifica n. gen. n. sp. Barnes 1984 toothed whale | |
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Chondrichthyes | |
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"Carcharocles megalodon" = Otodus megalodon1
"Carcharocles megalodon" = Otodus megalodon1 Agassiz 1835 megalodon possibly from 45460 instead of 45458
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