Boulder 38 (Levis Conglomerate) (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 224140: authorized by Melanie Hopkins, entered by Melanie Hopkins on 19.01.2022

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Artiopoda
 Agnostida - Diplagnostidae
Pseudagnostus canadensis, Pseudagnostus gyps
Pseudagnostus gyps Clark 1923
Trilobita
 Harpetida - Harpididae
Loganopeltis zenkeri
Loganopeltis zenkeri Billings 1860 trilobite
 Olenida - Olenidae
Bienvillia corax
Bienvillia corax Billings 1865 trilobite
 Olenida - Loganellidae
Levisella oweni
Levisella oweni trilobite
 Ptychopariida - Catillicephalidae
Onchonotus granulatus, Onchonotus globosus, Onchonotus nasutus, Acheilus brevis
Onchonotus granulatus Rasetti 1944 trilobite
Onchonotus globosus Billings 1860 trilobite
Onchonotus nasutus Walcott 1911 trilobite
Acheilus brevis Rasetti 1944 trilobite
 Ptychopariida - Raymondinidae
Raymondina respecta
Raymondina respecta Clark 1924 trilobite
 Ptychopariida - Plethopeltidae
Stenopilus intermedius
Stenopilus intermedius Clark 1924 trilobite
 Asaphida - Hungaiidae
Hungaia magnifica
Hungaia magnifica Billings 1860 trilobite
 Asaphida - Ptychaspididae
"Stigmametopus levisensis" = Idiomesus levisensis, Keithiella cylindrica, Keithia subclavata
"Stigmametopus levisensis" = Idiomesus levisensis Rasetti 1944 trilobite
Keithiella cylindrica Billings 1860 trilobite
 Asaphida - Eurekiidae
Bayfieldia tumifrons
Bayfieldia tumifrons Clark 1924 trilobite
 Asaphida - Remopleurididae
Apatokephaloides pauper
Apatokephaloides pauper Billings 1865 trilobite
 Corynexochida - Illaenuridae
Lecanopyge billingsi, Platycolpus capax
Lecanopyge billingsi Clark 1924 trilobite
Platycolpus capax Billings 1860 trilobite
 Corynexochida - Leiostegiidae
Aposolenopleura carinata
Aposolenopleura carinata Rasetti 1944 trilobite