2000F030, Bustard Cove to Back Arm, Catoche Formation (Ordovician of Canada)

Also known as Section 8 of Knight (1991), 1ECW-049A

Where: Newfoundland, Canada (50.7° N, 57.3° W: paleocoordinates 30.6° S, 46.6° W)

• coordinate stated in text

When: Strigigenalis caudata trilobite zone, Catoche Formation (St. George Group), Cassinian (482.3 - 470.0 Ma)

• "– top 0.15 m of 0.80-m-thick limestone bed within Unit 6f (a covered interval) of Knight (1991, page 125), 30.33 to 30.48 m above the base of the formation."

• formation-level stratigraphic resolution

Environment/lithology: marine; wackestone and packstone

• "wackestone with packstone layers and lenses: 4- to 6-cm grainy packstone bed at top; well-bedded, dolomitic, intensely bioturbated in lower beds, scattered gastropods, some flaser of lime mudstone; ripple-marked lenses of skeletal packstone; fossils include large trilobites, gastropods, some brachiopods."

Size classes: macrofossils, mesofossils

Primary reference: D. M. Rohr, W. D. Boyce, and E. A. Measures. 2008. The rostroconch mollusc Euchasma Billings, 1865 from the Lower Ordovician Catoche Formation, western Newfoundland. Newfoundland Department of Mines and Energy, Report 08(1):79-91 [P. Wagner/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 195783: authorized by Björn Kröger, entered by Björn Kröger on 24.08.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Proetida - Bathyuridae
Jeffersonia timon Billings 1865 trilobite
Petigurus nero Billings 1865 trilobite
Bolbocephalus convexus Billings 1865 trilobite
Benthamaspis conica Fortey 1979 trilobite
Bathyurellus abruptus Billings 1865 trilobite
"Grinnellaspis flabelliformis" = Punka flabelliformis Fortey 1979 trilobite
Rostroconchia
 Conocardiida - Eopteriidae
Euchasma blumenbachi Billings 1859
Strophomenata
 Billingsellida - Polytoechiidae
Tritoechia sp. Ulrich and Cooper 1936