Cassina, bed 34 (Triassic of Switzerland)

Where: Switzerland (45.9° N, 8.9° E)

• Paleocoordinates: 18.1° N, 33.4° E (Wright 2013)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Cassina Formation, Fassanian (242.0 - 235.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: basinal (); lithified, carbonaceous lime mudstone

• Bottom of a basin below wave base and adjacent to a shallow-water carbonate platform from which a recurrent carbonate supply reached the basin floor, contributing to the sediment lamination. Vertebrate assemblages and the lack of stenohaline invertebrates point to an environment with limited connection to the open sea. Episodic, short-lived depositional events occur randomly and are related to sediment input from basin margins (turbidite lithofacies) and to volcanic activity (tephra lithofacies).

Size class: macrofossils

Preservation: adpression

Collected in 2006

Collection methods: quarrying,

• Repository: Museo Cantonale di Storia Naturale (Lugano)

Primary reference: A. López-Arbarello, T. Bürgin, H. Furrer and R. Stockar. 2016. New holostean fishes (Actinopterygii: Neopterygii) from the Middle Triassic of the Monte San Giorgio (Canton Ticino, Switzerland). PeerJ 4(e2234):1-61 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 180493: authorized by Matthew Clapham, entered by Matthew Clapham on 19.07.2016, edited by Bethany Allen

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
Actinopteri
 Holostei -
Ticinolepis longaeva
Ticinolepis longaeva López-Arbarello et al. 2016
 Semionotiformes - Macrosemiidae
Eosemionotus sp.
Eosemionotus sp. Stolley 1919
Osteichthyes
 Saurichthyiformes - Saurichthyidae
Saurichthys spp.
Saurichthys spp. Agassiz 1834 ray-finned fish
Reptilia
 Eosauropterygia - Pachypleurosauridae
Neusticosaurus sp., Neusticosaurus peyeri
Neusticosaurus sp. Seeley 1882 diapsid
Neusticosaurus peyeri Sander 1989 diapsid
MCSN 8076, partial skeleton
 Eosauropterygia - Nothosauridae
Ceresiosaurus sp.
Ceresiosaurus sp. Peyer 1931 diapsid