Pomerado Conglomerate Formation Stratigraphic range: Late Eocene | |
---|---|
Type | Geologic formation |
Overlies | Mission Valley Formation |
Thickness | 0–55 metres (0–180 ft) |
Lithology | |
Primary | conglomerate |
Location | |
Region | San Diego County, California |
Country | United States |
Type section | |
Named for | Pomerado Road |
The Pomerado Conglomerate Formation is a geologic formation in southwestern San Diego County, California.[1][2]
It was named for exposures located along Pomerado Road, at the divide between Carroll Canyon and Poway Valley.[1]
The Pomerado Conglomerate is of the Late Eocene Epoch, and is a massive cobble conglomerate. It is lithologically identical to the local Stadium Conglomerate.[1]
It overlies the sandstone Mission Valley Formation.[1] It is the uppermost formation of the Poway Group, and has a maximum thickness of 55 metres (180 ft).[1]
The Pomerado Conglomerate preserves fossils dating back to the Late Eocene Epoch of the Paleogene period, during the Cenozoic Era.[3]
Ferae reported from the Pomerado Conglomerate | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
Carnivoraformes undet. Genus B | SDSNH locality 3757, Scripps Ranch North Site 57, Miramar Sandstone Member.[4] | SDSNH 56335, cranium with right and left P4-M2.[4] | |||
Hyaenodon | cf. H. sp. | Upper Member.[5] | "SDSNH 60554, right maxillary fragment with P3–P4".[5] | Specimen reidentified as the nimravid Pangurban. | |
Pangurban | P. egiae | Upper Member.[5] | "SDSNH 60554, right maxillary fragment with P3–P4".[5] | A nimravid, originally reported as cf. Hyaenodon sp. |
Rodents reported from the Pomerado Conglomerate | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
Nonomyinae | Indeterminate | Isolated m1 (SDSNH 72232).[6] | "An unnamed new taxon of nonomyine morphologically intermediate between Nonomys and Diplolophus."[6] | ||
Nonomys | N. gutzleri | Isolated teeth.[6] | A myomorph. |
Original source: https://en.wikipedia.org/wiki/Pomerado Conglomerate.
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