Where: Alaska (65.9° N, 163.1° W: paleocoordinates 66.2° N, 162.2° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Imuruk Volcanics Formation, Messinian (7.2 - 5.3 Ma)
• Fossil forest buried by volcanic flow
• bed-level stratigraphic resolution
Environment/lithology: dry floodplain; unlithified sandstone and lithified peat
Size classes: macrofossils, mesofossils
Primary reference: J. V. Matthews. 1970. Two new species of Micropeplus from the Pliocene of western Alaska with remarks on the evolution of Micropeplinae (Coleoptera: Staphylinidae). Canadian Journal of Zoology 48:779-788 [M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 123352: authorized by Matthew Clapham, entered by Matthew Clapham on 19.01.2012
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Dicotyledoneae | |
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Angiospermae | |
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Pinopsida | |
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Insecta | |
"? Diapriidae indet." = Diapriinae1
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Amara sp.1, "Pterostichus (Omaseus) cf. corvinus" = Pterostichus (Melanius) corvinus1, "Pterostichus (Lyperopherus) cf. vermiculosus" = Pterostichus (Lenapterus) vermiculosus1, "Carabus (Diocarabus) cf. truncaticollis" = Carabus (Aulonocarabus) truncaticollis1, Patrobus cf. septentrionis1, Bembidion (Peryphus) sp.1, Bembidion (Trepanedoris) spp.1, "Bembidion (Plataphodes) sp." = Bembidion (Plataphus)1, Dyschirius (Dyschirodius) sp.1, Nebria sp.1, Leistus sp.1, Agonum sp.1
"Pterostichus (Lyperopherus) cf. vermiculosus" = Pterostichus (Lenapterus) vermiculosus1 Ménétriés 1851 ground beetle
"Carabus (Diocarabus) cf. truncaticollis" = Carabus (Aulonocarabus) truncaticollis1 Eschscholtz 1833 ground beetle | |
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Lathrobium sp.1, Omaliinae indet.1, Stenus sp.1, ? Veraphis sp.1, Kalissus nitidus, "Micropeplus tesserula" = Arrhenopeplus tesserula, Micropeplus hoogendorni n. sp., Micropeplus hopkinsi n. sp.
Kalissus nitidus LeConte 1874 rove beetle
"Micropeplus tesserula" = Arrhenopeplus tesserula Curtis 1828 rove beetle
Micropeplus hoogendorni n. sp. Matthews 1970 rove beetle
Micropeplus hopkinsi n. sp. Matthews 1970 rove beetle | |
"Georyssus sp." = Georissus1
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"Anobiidae indet." = Ptinidae1
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Arachnida | |
Xysticus archaeopalpus n. sp.3
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"Cephenus cf. corae" = Cepheus corae1
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