ammonites
"Gruhalde" clay quarry, Frick (Triassic of Switzerland)

Also known as ETE Locality 1555, Frick bonebed

Where: Aargau, Switzerland (47.5° N, 8.0° E: paleocoordinates 30.8° N, 10.4° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Löwenstein Formation, Norian (221.5 - 205.6 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.

• 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 in 1961-1988

Collection methods: quarrying, mechanical,

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

Primary reference: P. M. Galton. 1986. Prosauropod dinosaur Plateosaurus (= Gresslyosaurus) (Saurischia: Sauropodomorpha) from the Upper Triassic of Switzerland. Geologica et Palaeontologica 20:167-183 [M. Carrano/M. Carrano/M. Carrano] more details

Purpose of describing collection: taphonomic analysis

PaleoDB collection 22680: authorized by Kay Behrensmeyer, entered by Kay Behrensmeyer on 23.04.2001, edited by Matt Carrano