Three new fossil mayfly (Ephemeroptera) larvae from the Redmond Formation (Cenomanian) of Newfoundland and Labrador, Canada, are described: Alatuscapillus icarus gen. et sp. nov. (family Oligoneuriidae), Cruscolli sheppardae gen. et sp. nov. (family Heptageniidae), and Protoligoneuria borealis sp. nov. (family Hexagenitidae). This discovery marks the first juvenile insect nymphs to be described from this formation and helps fill gaps in our understanding of the global and temporal distribution of mayflies during the Cretaceous period. Of these, C. sheppardae marks the oldest occurrence of the family Heptageniidae in the fossil record, while A. icarus and P. borealis mark the first fossil occurrences of the families Oligoneuriidae and Hexagenitidae in North America. The anatomy, preservation, and behaviour of these new mayfly species inferred from modern taxa consolidate the hypothesis that the Redmond Formation’s palaeoenvironment was lacustrine in nature.
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Research Article|
June 01, 2024
New Late Cretaceous (Cenomanian) fossil mayfly nymphs (Oligoneuriidae, Heptageniidae, Hexagenitidae) from the Redmond Formation, Labrador, Canada
André S. Mueller;
(Conceptualization, Formal analysis, Investigation, Methodology, Visualization, Writing – original draft, Writing – review & editing)
a
Redpath Museum, Department of Biology, 5620McGill University
, Montréal, Québec, CanadaCorresponding author: André S. Mueller (email: [email protected])
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Alexandre V. Demers-Potvin
Alexandre V. Demers-Potvin
(Conceptualization, Formal analysis, Funding acquisition, Methodology, Resources, Writing – review & editing)
a
Redpath Museum, Department of Biology, 5620McGill University
, Montréal, Québec, Canada
Search for other works by this author on:
André S. Mueller
Conceptualization, Formal analysis, Investigation, Methodology, Visualization, Writing – original draft, Writing – review & editing
a
Redpath Museum, Department of Biology, 5620McGill University
, Montréal, Québec, Canada
Alexandre V. Demers-Potvin
Conceptualization, Formal analysis, Funding acquisition, Methodology, Resources, Writing – review & editing
a
Redpath Museum, Department of Biology, 5620McGill University
, Montréal, Québec, CanadaCorresponding author: André S. Mueller (email: [email protected])
Publisher: Canadian Science Publishing
Received:
21 Nov 2023
Accepted:
15 Mar 2024
First Online:
13 Jun 2024
Online ISSN: 1480-3313
Print ISSN: 0008-4077
Funding
- Funder(s):Redpath Museum, McGill University
- Award Id(s): Class of 66 Award
- Award Id(s):
- Funder(s):National Geographic Society Education Foundation
- Award Id(s): Early Career Grant (EC-191R-18)
- Award Id(s):
- Funder(s):Fonds de recherche Nature et technologies Québec
- Award Id(s): (FRQNT 256630)
- Award Id(s):
- Funder(s):Northern Scientific Training Program
The Author(s)
Permission for reuse (free in most cases) can be obtained from copyright.com.
Canadian Journal of Earth Sciences (2024) 61 (6): 712–722.
Article history
Received:
21 Nov 2023
Accepted:
15 Mar 2024
First Online:
13 Jun 2024
Citation
André S. Mueller, Alexandre V. Demers-Potvin; New Late Cretaceous (Cenomanian) fossil mayfly nymphs (Oligoneuriidae, Heptageniidae, Hexagenitidae) from the Redmond Formation, Labrador, Canada. Canadian Journal of Earth Sciences 2024;; 61 (6): 712–722. doi: https://doi.org/10.1139/cjes-2023-0133
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Index Terms/Descriptors
- Arthropoda
- behavior
- biogeography
- Canada
- Cenomanian
- Cretaceous
- Eastern Canada
- Ephemeroptera
- exoskeletons
- Insecta
- Labrador
- larvae
- Mandibulata
- Mesozoic
- morphology
- new taxa
- Newfoundland and Labrador
- Palaeoptera
- Pterygota
- taxonomy
- Upper Cretaceous
- Redmond Formation
- Hexagenitidae
- Redmond Mine
- Heptageniidae
- Oligoneuriidae
- Alatuscapillus icarus
- Cruscolli sheppardae
- Protoligoneuria borealis
- Cruscolli
- Alatuscapillus
Latitude & Longitude
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