Where: Chiapas, Mexico (16.7° N, 93.5° W)
• Paleocoordinates: 5.7° N, 36.7° W (Wright 2013)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: San Ricardo Formation, Kimmeridgian (157.3 - 152.1 Ma)
• group of beds-level stratigraphic resolution
Environment/lithology: shallow subtidal; lithified limestone and lithified marl
Size class: macrofossils
Preservation: cast, mold/impression
Primary reference: G. Alencaster. 1977. Moluscos y braquiopodos del Jurasico superior de Chiapas [Upper Jurassic molluscs and brachiopods from Chiapas]. Revista mexicana de ciencias geologicas 1(2):151-166 [W. Kiessling/U. Merkel/M. Manojlovic]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 98672: authorized by Wolfgang Kiessling, entered by Uta Merkel on 18.10.2010
Creative Commons license: CC0 (CC0)
Taxonomic list
| Rhynchonellata | |
"Sellithyris subsella" = Xestosina subsella
"Sellithyris subsella" = Xestosina subsella Leymerie 1846 | |
| Gastropoda | |
Nerinea gachupinae n. sp.
Nerinea gachupinae n. sp. Alencaster 1977 snail | |
|
? Natica cf. hemispherica Romer 1836 moon snail | |
|
Harpagodes oceani Brongniart 1821 snail | |
|
? Purpuroidea acatlana Alencaster and Buitron 1965 periwinkle | |
| Bivalvia | |
|
Nuculana sp. Link 1807 pointed nut clam | |
|
? Ceratomya sp. Sandberger 1864 clam
? Gresslya sp. Agassiz 1843 clam | |
|
Pleuromya tellina Agassiz 1842 clam | |
|
Eocallista pulchella Loriol and Pellat 1868 clam
Eocallista (Eocallista) brongniarti Romer 1836 clam | |
|
Protocardia cf. pesolina Contejean 1859 cockle
Protocardia dufrenoyca Buvignier 1852 cockle | |
|
Tancredia (Tancredia) cf. subcurtansata Lycett 1853 clam | |
|
Lucina cf. radiata Contejean 1859 clam
Mesomiltha portlandica Sowerby 1836 clam | |
|
Ptychomya stantoni Cragin 1905 clam | |
|
Placunopsis sp. Morris and Lycett 1853 scallop | |
|
Inoperna cf. perplicata Etallon 1863 mussel | |