Boulder 32 (Levis) (Cambrian of Canada)

Where: Quebec, Canada (46.8° N, 71.2° W: paleocoordinates 31.6° S, 70.1° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Hungaia trilobite zone, Trempealeauan (492.5 - 485.4 Ma)

Environment/lithology: marine; lithified, gray, sandy limestone

• Fauna is sampled from conglomerate boulders which "usually consist of pure, fine-grained limestone ranging in color from light to dark gray, the latter often assuming a purplish hue. Quartz sand may occur in these limestones, and in a few instances its percentage is so high that the rock might rather be designated as a calcareous sandstone."

Size class: macrofossils

Primary reference: F. Rasetti. 1944. Upper Cambrian trilobites from the Levis Conglomerate. Journal of Paleontology 18(3):229-258 [M. Hopkins/M. Hopkins]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 224137: authorized by Melanie Hopkins, entered by Melanie Hopkins on 19.01.2022

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Corynexochida - Illaenuridae
Ambonolium affine Rasetti 1944 trilobite
Platycolpus capax Billings 1860 trilobite
 Ptychopariida - Plethopeltidae
Leiocoryphe brevis Raymond 1924 trilobite
"Stenopilus dubius" = Plethometopus dubius Rasetti 1944 trilobite
Plethometopus convergens Raymond 1924 trilobite
Stenopilus elongatus Rasetti 1944 trilobite
 Ptychopariida - Catillicephalidae
Onchonotus convexus Rasetti 1944 trilobite
Acheilus gibbus Rasetti 1944 trilobite
Acheilus latus Rasetti 1944 trilobite
 Asaphida - Ptychaspididae
Keithiella cylindrica Billings 1860 trilobite
Keithiella brevis Rasetti 1944 trilobite
Keithia similis Rasetti 1944 trilobite
 Harpetida - Harpididae
Loganopeltis zenkeri Billings 1860 trilobite