Lons-le-Saunier, R22 (Triassic of France)

Where: Jura, France (46.7° N, 5.6° E: paleocoordinates 33.5° N, 9.0° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Rhaetian (208.5 - 201.3 Ma)

• bed-level stratigraphic resolution

Environment/lithology: coastal; black shale

• "blackish shales, 1.20 m thick, that are very similar to those of R20."

Size class: mesofossils

Preservation: mold/impression

Collection methods: quarrying,

Primary reference: G. Cuny, A. Hunt, J. Mazin and R. Rauscher. 2000. Teeth of enigmatic neoselachian sharks and an ornithischian dinosaur from the uppermost Triassic of Lons-le-Saunier (Jura, France). Paläontologische Zeitschrift 74(1/2):171-185 [M. Carrano/K. Maguire/J. Alroy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 60568: authorized by Matthew Carrano, entered by Matthew Carrano on 17.05.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

Osteichthyes
 Saurichthyiformes - Saurichthyidae
"Saurichthys" sp. Agassiz 1834 ray-finned fish
 Palaeonisciformes - Palaeoniscidae
Gyrolepis sp. Agassiz 1833
"Gyrolepis" sp. Agassiz 1833
 Palaeonisciformes - Birgeriidae
"Birgeria" sp. Stensiö 1919
Actinopteri
 Semionotiformes - Semionotidae
Sargodon tomicus Plieninger 1847
Chondrichthyes
 Synechodontiformes -
""Hybodus" minor" = Rhomphaiodon minor
""Hybodus" minor" = Rhomphaiodon minor Agassiz 1837 elasmobranch
 Synechodontiformes - Palaeospinacidae
Synechodus rhaeticus Duffin 1982 elasmobranch
 Lamniformes - Cetorhinidae
 Hybodontiformes -
Lissodus minimus Agassiz 1839 elasmobranch
Bivalvia
 Pectinida - Pectinoidae
? Chlamys sp. Röding 1798 scallop