"Gruhalde" clay quarry, Frick (Bed 65) (Triassic of Switzerland)

Also known as ETE Locality 1555, Frick bonebed, Tonwerke Keller

Where: Aargau, Switzerland (47.5° N, 8.0° E: paleocoordinates 30.4° N, 10.2° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Gruhalde Member (Klettgau Formation), Norian (228.0 - 208.5 Ma)

• Bed 65 is bone-bearing layer, 8.2 m above Gansinger Dolomit and 1.9 m below Liassic Insektenmergel. Rhät missing at Frick, so this bed is equivalent to Knollenmergel, or upper Middle Keuper. Layer locally called the "Obere bunte Mergelschichten" = actually is lower part of Löwenstein Fm. Now the Gruhalde Member of the Klettgau Fm.

• bed-level stratigraphic resolution

Environment/lithology: "floodplain"; gray, green, red marl

• ETE sed env 1: fluvial, ETE sed env 2: floodplain ETE event: ., ETE env comment: miring
• ETE rock type adj: "grnsh,grysh,pink", ETE lithology comments: . "a 4 to .5 m bed of gray to violet gray to partly greenish spotted marl within the upper variegated marl beds"

Size classes: macrofossils, mesofossils

Collected by E. Wälchli in 1961, 1976–1988, 2016

Collection methods: quarrying, surface (in situ), mechanical,

• ETE reference list: 478; discovered by children of a quality controller (Ernst Wälchli) at brickwork company in 1961

Primary reference: U. Oberli. 1979. Dinosaurier-Ausgrabungen [Dinosaur excavations]. Schweizerische Rundschau für Medizin (PRAXIS) 68(40):1300-1303 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taphonomic analysis

PaleoDB collection 22680: authorized by Anna Behrensmeyer, entered by Anna Behrensmeyer on 23.04.2001, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Hybodontiformes - Hybodontidae
Hybodus sp.3 Agassiz 1834 elasmobranch
 Hybodontiformes -
Lissodus sp.3 Brough 1935 elasmobranch
Osteichthyes
 Dipnoi - Ceratodontidae
Ceratodus sp.1 Agassiz 1838 lungfish
 Therapsida - Cynodontia
Cynodontia indet.3 cynodont
ETE occurrence; species: Cynodontia
Reptilia
 Loricata -
cf. Saltoposuchus sp.3 von Huene 1921 crocodilian
 Pseudosuchia - Stagonolepididae
cf. Aetosaurus sp.3 Fraas 1887 aetosaur
 Theropoda -
Liliensternus sp.1 Welles 1984 neotheropod
 Saurischia - Plateosauridae
Plateosaurus trossingensis2 Fraas 1913 plateosaurid
 Eosuchia - Sphenodontidae
Sphenodontidae indet.3 Cope 1871 lepidosaur
ETE occurrence; species: Sphenodontidae
Actinopteri
 Lepisosteiformes -
Lepidotes sp.1 Agassiz 1832 gar