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Redmond No. 1, Knob Lake District (MPE collection) (Cretaceous of Canada)

Where: Newfoundland and Labrador, Canada (54.7° N, 66.8° W: paleocoordinates 46.4° N, 27.3° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Redmond Formation, Cenomanian (99.7 - 94.3 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marginal marine; lithified, ferruginous claystone

• Harrison et al. (1972) noted normal faults and grabens associated with the Redmond Formation, and Gastil et al. (1960) hypothesized that the Redmond Formation iron-rich talus was deposited in a newly formed Cretaceous structural basin. Widespread igneous activity and regional faulting in eastern Canada and the northeastern United States have been associated with extension and opening of the Atlantic Ocean (Norris, 1993). However, Faure et al. (1996) attributed the regional structural fabric of eastern Canada and New England to the extensional regime associated with the initiation of rifting between Labrador and Greenland ca. 140 Ma.
• "hard, ferruginous argillite"

Size class: mesofossils

Preservation: adpression, soft parts

Collected in 2013

• Repository: Redpath Museum, Invertebrate Palaeontology (RMIP); Musée de Paléontologie et de l’Evolution (MPE)

Primary reference: A. V. Demers-Potvin, J. Szwedo, C. P. Paragnani and H. C. E. Larsson. 2020. First North American occurrence of hairy cicadas discovered in the Cenomanian (Late Cretaceous) of Labrador, Canada. Acta Palaeontologica Polonica 65:85-98 [M. Clapham/M. Clapham] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 208027: authorized by Matthew Clapham, entered by Matthew Clapham on 15.03.2020

Creative Commons license: CC BY (attribution)