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El Cholo, Argentina

Formation	El Cholo
Age:	183 - 174 Ma Jurassic
Interval	Pliensbachian
Lithology	sandstone, sandstone/"limestone", sandstone/"shale", siltstone/sandstone
Number of Collections	30
Number of Occurrences	131

Recorded Sample Locations

Location	Region	Stratigraphic Name
A2-Arroyo La Laguna	Calingasta Department, San Juan Province, Argentina	El Cholo
B1-Puesto Araya	San Rafael Department, Mendoza Province, Argentina	El Cholo
Alumbre Creek	San Rafael Department, Mendoza Province, Argentina	El Cholo

Associated Units

Stratigraphic Name	Age	Lithology	Occurrence Records
Arroyo Malo	201 - 199 Ma Early Jurassic	siltstone, mudstone, sandstone	67
El Freno	199 - 183 Ma Early Jurassic	conglomerate/sandstone	5
Puesto Araya	197 - 174 Ma Jurassic	limestone, sandstone/"shale"	24

Recorded Fossils

Accepted Name	Type	Hierarchy	Age
Brachiopoda phylum	2	Animalia : Brachiopoda	190.8 - 182.7 Ma Early Jurassic
Furcirhynchia trechmanni species	7	Animalia : Brachiopoda : Rhynchonellata : Rhynchonellida : Rhynchonellidae : Furcirhynchia : *Furcirhynchia trechmanni*	201.3 - 199.3 Ma Early Jurassic
Spiriferina sp. genus	6	Animalia : Brachiopoda : Rhynchonellata : Spiriferinida : Spiriferinidae : *Spiriferina*	190.8 - 182.7 Ma Early Jurassic
Anthozoa class	3	Animalia : Cnidaria : Anthozoa	190.8 - 182.7 Ma Early Jurassic
Isastrea sp. genus	6	Animalia : Cnidaria : Anthozoa : Scleractinia : Montlivaltiidae : *Isastrea*	190.8 - 182.7 Ma Early Jurassic
Montlivaltia sp. genus	6	Animalia : Cnidaria : Anthozoa : Scleractinia : Montlivaltiidae : *Montlivaltia*	190.8 - 182.7 Ma Early Jurassic
Thecosmilia sp. genus	6	Animalia : Cnidaria : Anthozoa : Scleractinia : Montlivaltiidae : *Thecosmilia*	190.8 - 182.7 Ma Early Jurassic
Bivalvia class	3	Animalia : Mollusca : Bivalvia	190.8 - 182.7 Ma Early Jurassic
Cucullaea sp. genus	6	Animalia : Mollusca : Bivalvia : Arcida : Cucullaeidae : *Cucullaea*	190.8 - 182.7 Ma Early Jurassic
Grammatodon sp. genus	6	Animalia : Mollusca : Bivalvia : Arcida : Parallelodontidae : *Grammatodon*	182.7 - 174.1 Ma Jurassic
Parallelodon sp. genus	6	Animalia : Mollusca : Bivalvia : Arcida : Parallelodontidae : *Parallelodon*	190.8 - 182.7 Ma Early Jurassic
Inoperna sp. genus	6	Animalia : Mollusca : Bivalvia : Mytilida : Mytilidae : *Inoperna*	190.8 - 182.7 Ma Early Jurassic
Lycettia sp. genus	6	Animalia : Mollusca : Bivalvia : Mytilida : Mytilidae : *Lycettia*	182.7 - 174.1 Ma Jurassic
Modiolus sp. genus	6	Animalia : Mollusca : Bivalvia : Mytilida : Mytilidae : *Modiolus*	190.8 - 182.7 Ma Early Jurassic
Nuculana (Praesaccella) ovum species	7	Animalia : Mollusca : Bivalvia : Nuculanida : Nuculanidae : Nuculana : *Nuculana (Praesaccella) ovum*	190.8 - 182.7 Ma Early Jurassic
Gervillaria pallas species	7	Animalia : Mollusca : Bivalvia : Ostreida : Bakevelliidae : Gervillaria : *Gervillaria pallas*	190.8 - 182.7 Ma Early Jurassic
Gervillella sp. genus	6	Animalia : Mollusca : Bivalvia : Ostreida : Bakevelliidae : *Gervillella*	190.8 - 182.7 Ma Early Jurassic
Gervillia (Cultriopsis) sp. subgenus	6.3	Animalia : Mollusca : Bivalvia : Ostreida : Bakevelliidae : Gervillia : *Gervillia (Cultriopsis)*	182.7 - 174.1 Ma Jurassic
Gryphaea sp. genus	6	Animalia : Mollusca : Bivalvia : Ostreida : Gryphaeidae : *Gryphaea*	201.3 - 199.3 Ma Early Jurassic
Isognomon sp. genus	6	Animalia : Mollusca : Bivalvia : Ostreida : Pteriidae : *Isognomon*	190.8 - 182.7 Ma Early Jurassic
Pinna sp. genus	6	Animalia : Mollusca : Bivalvia : Ostreida : Pinnidae : *Pinna*	201.3 - 199.3 Ma Early Jurassic
Pinna folium species	7	Animalia : Mollusca : Bivalvia : Ostreida : Pinnidae : Pinna : *Pinna folium*	182.7 - 174.1 Ma Jurassic
Trichites sp. genus	6	Animalia : Mollusca : Bivalvia : Ostreida : Pinnidae : *Trichites*	190.8 - 182.7 Ma Early Jurassic
Posidonotis sp. genus	6	Animalia : Mollusca : Bivalvia : Ostreida : Posidoniidae : *Posidonotis*	190.8 - 182.7 Ma Early Jurassic
Placunopsis striatula species	7	Animalia : Mollusca : Bivalvia : Pectinida : Anomiidae : Placunopsis : *Placunopsis striatula*	190.8 - 182.7 Ma Early Jurassic
Entolium lunare species	7	Animalia : Mollusca : Bivalvia : Pectinida : Entolium : *Entolium lunare*	190.8 - 182.7 Ma Early Jurassic
Kolymonectes weaveri species	7	Animalia : Mollusca : Bivalvia : Pectinida : Entolioididae : Kolymonectes : *Kolymonectes weaveri*	190.8 - 182.7 Ma Early Jurassic
Asoella asapha species	7	Animalia : Mollusca : Bivalvia : Pectinida : Hunanopectinidae : Asoella : *Asoella asapha*	190.8 - 182.7 Ma Early Jurassic
Ctenostreon sp. genus	6	Animalia : Mollusca : Bivalvia : Limida : Limidae : *Ctenostreon*	190.8 - 182.7 Ma Early Jurassic
Plagiostoma sp. genus	6	Animalia : Mollusca : Bivalvia : Limida : Limidae : *Plagiostoma*	201.3 - 199.3 Ma Early Jurassic
Otapiria sp. genus	6	Animalia : Mollusca : Bivalvia : Ostreida : Pteriidae : *Otapiria*	190.8 - 182.7 Ma Early Jurassic
Otapiria neuquensis species	7	Animalia : Mollusca : Bivalvia : Ostreida : Pteriidae : Otapiria : *Otapiria neuquensis*	190.8 - 182.7 Ma Early Jurassic
Weyla sp. genus	6	Animalia : Mollusca : Bivalvia : Pectinida : Neitheidae : *Weyla*	190.8 - 182.7 Ma Early Jurassic
Weyla alata species	7	Animalia : Mollusca : Bivalvia : Pectinida : Neitheidae : Weyla : *Weyla alata*	190.8 - 182.7 Ma Early Jurassic
Weyla bodenbenderi species	7	Animalia : Mollusca : Bivalvia : Pectinida : Neitheidae : Weyla : *Weyla bodenbenderi*	190.8 - 182.7 Ma Early Jurassic
Oxytoma (Palmoxytoma) cygnipes species	7	Animalia : Mollusca : Bivalvia : Pectinida : Oxytomidae : Oxytoma : *Oxytoma (Palmoxytoma) cygnipes*	201.3 - 199.3 Ma Early Jurassic
Oxytoma inequivalvis species	7	Animalia : Mollusca : Bivalvia : Pectinida : Oxytomidae : Oxytoma : *Oxytoma inequivalvis*	190.8 - 182.7 Ma Early Jurassic
Camptonectes subulatus species	7	Animalia : Mollusca : Bivalvia : Pectinida : Pectinidae : Camptonectes : *Camptonectes subulatus*	201.3 - 199.3 Ma Early Jurassic
Eopecten velatus species	7	Animalia : Mollusca : Bivalvia : Pectinida : Pectinidae : Eopecten : *Eopecten velatus*	201.3 - 199.3 Ma Early Jurassic
Praechlamys valoniensis species	7	Animalia : Mollusca : Bivalvia : Pectinida : Pectinidae : Praechlamys : *Praechlamys valoniensis*	201.3 - 199.3 Ma Early Jurassic
Pseudopecten equivalvis species	7	Animalia : Mollusca : Bivalvia : Pectinida : Pectinidae : Pseudopecten : *Pseudopecten equivalvis*	190.8 - 182.7 Ma Early Jurassic
Harpax rapa species	7	Animalia : Mollusca : Bivalvia : Pectinida : Plicatulidae : Harpax : *Harpax rapa*	190.8 - 182.7 Ma Early Jurassic
Parvamussium pumilum species	7	Animalia : Mollusca : Bivalvia : Pectinida : Propeamussiidae : Parvamussium : *Parvamussium pumilum*	182.7 - 174.1 Ma Jurassic
Pleuromya sp. genus	6	Animalia : Mollusca : Bivalvia : Myida : Pleuromyidae : *Pleuromya*	201.3 - 199.3 Ma Early Jurassic
Pholadomya sp. genus	6	Animalia : Mollusca : Bivalvia : Pholadomyidae : *Pholadomya*	190.8 - 182.7 Ma Early Jurassic
Frenguelliella sp. genus	6	Animalia : Mollusca : Bivalvia : Trigoniida : Trigoniidae : *Frenguelliella*	190.8 - 182.7 Ma Early Jurassic
Myophorella sp. genus	6	Animalia : Mollusca : Bivalvia : Trigoniida : Myophorellidae : *Myophorella*	190.8 - 182.7 Ma Early Jurassic
Myophorella (Myophorella) araucana species	7	Animalia : Mollusca : Bivalvia : Trigoniida : Myophorellidae : Myophorella : *Myophorella (Myophorella) araucana*	190.8 - 182.7 Ma Early Jurassic
Vaugonia sp. genus	6	Animalia : Mollusca : Bivalvia : Trigoniida : Myophorellidae : *Vaugonia*	182.7 - 174.1 Ma Jurassic
Dactylioceratidae family	5	Animalia : Mollusca : Cephalopoda : Ammonoidea : Dactylioceratidae	182.7 - 174.1 Ma Jurassic
Nodicoeloceras sp. genus	6	Animalia : Mollusca : Cephalopoda : Ammonitida : Dactylioceratidae : *Nodicoeloceras*	182.7 - 174.1 Ma Jurassic
Eoamaltheus sp. genus	6	Animalia : Mollusca : Cephalopoda : Ammonoidea : Eoderoceratidae : *Eoamaltheus*	190.8 - 182.7 Ma Early Jurassic
Fanninoceras (Fanninoceras) fannini species	7	Animalia : Mollusca : Cephalopoda : Ammonitida : Eoderoceratidae : Fanninoceras : *Fanninoceras (Fanninoceras) fannini*	190.8 - 182.7 Ma Early Jurassic
Harpoceras sp. genus	6	Animalia : Mollusca : Cephalopoda : Ammonitida : Hildoceratidae : *Harpoceras*	182.7 - 174.1 Ma Jurassic
Harpoceratinae subfamily	5.3	Animalia : Mollusca : Cephalopoda : Ammonitida : Hildoceratidae : Harpoceratinae	182.7 - 174.1 Ma Jurassic
Protogrammoceras sp. genus	6	Animalia : Mollusca : Cephalopoda : Ammonoidea : Hildoceratidae : *Protogrammoceras*	190.8 - 182.7 Ma Early Jurassic
Tropidoceras sp. genus	6	Animalia : Mollusca : Cephalopoda : Ammonoidea : Polymorphitidae : *Tropidoceras*	190.8 - 182.7 Ma Early Jurassic
Ammonoidea order	4	Animalia : Mollusca : Cephalopoda : Ammonoidea	190.8 - 182.7 Ma Early Jurassic
Gastropoda class	3	Animalia : Mollusca : Gastropoda	190.8 - 182.7 Ma Early Jurassic

References

Damborenea S. E. (1987) Early Jurassic Bivalvia of Argentina: Part 1, Stratigraphical introduction and superfamilies Nuculanacea, Arcacea, Mytilacea and Pinnacea, Palaeontographica A199 1-3, 23-111

Damborenea S. E. (2002) Early Jurassic bivalves of Argentina: Part 3, Superfamilies Monotoidea, Pectinoidea, Plicatuloidea and Dimyoidea, Palaeontographica Abteilung A 265 1-4, 1-119

Riccardi A. C., Damborenea S. E., et al (2004) The Triassic/Jurassic boundary in the Andes of Argentina, Rivista Italiana di Paleontologia e Stratigrafia 110 1, 69-76

Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!

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