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Corumictis

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Extinct genus of mustelid

Corumictis Temporal range: Early - LateOligocene 28.8–25.9 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Carnivora
Family:	Mustelidae
Genus:	†Corumictis Paterson et al., 2020^[1]
Species:	†C. wolsani
Binomial name
†Corumictis wolsani Paterson et al., 2020

Corumictis is an extinct genus ofmustelid from the EarlyOligocene (Arikareean) ofNorth America, specificallyOregon.^[2] It contains a single speciesCorumictis wolsani, which is notable for being the oldest currently known mustelid.

Name

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The generic name is derived from theLatin wordsCorum (northwest) andictis (weasel). The specific name honorspaleontologist Mieczysław Wolsan, who extensively studied the evolutionary history of fossil musteloids.

Discovery

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The skull ofCorumictis was discovered around 2005 at theJohn Day Formation in northern Oregon, which dates to between 28.8 million and 25.9 million years ago.^[3] The skull was originally believed to have belonged to an ancientfeline, but was re-examined by palaeontologist Ryan Paterson ofCarlton University inCanada, who concluded that it was a mustelid instead.^[4]

Description

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Corumictis was very small, about the size of the livingleast weasel; its skull measured just 4 cm (1.6 in) long.^[4] It is considered closely allied withPlesictis and certainOligobunine mustelids.^[2]Corumictis has very sharp teeth, and compared to modern mustelids it lacks an alisphenoid canal and a postprotocrista on its first molars. It retains a dorsally deep suprameatalfossa, a feature occasionally considered unique toprocyonids.^[2]

References

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^"Corumictis".Fossilworks.
^^a ^b ^cPaterson, R. (2020)."The earliest mustelid in North America".Zoological Journal of the Linnean Society.188 (4):1318–1339.doi:10.1093/zoolinnean/zlz091.
^Chung, Emily."Fossil identified as 'great-grandfather' of wolverines".CBC News. RetrievedMarch 3, 2020.
^^a ^bDvorsky, George."Prehistoric 'Cat' Skull Actually Belonged to an Ancestor of Modern Wolverines".Gizmodo.

Genera ofred pandas,raccoons,skunks,mustelids and their extinct allies

Kingdom:Animalia
Phylum:Chordata
Class:Mammalia
Order:Carnivora

Musteloidea

†Peignictis
†Plesiogale

Ailuridae

Ailurinae	Ailurus †Magerictis †Parailurus †Pristinailurus
†Amphictinae	Amphictis
†Simocyoninae	Actiocyon Alopecocyon Protursus Simocyon

Mephitidae

Procyonidae

Mustelidae

†Acheronictis †Aragonictis †Arikarictis †Circamustela †Erokomellivora †Franconictis †Kenyalutra †Kinometaxia †Laphyctis †Luogale †Marcetia †Matanomictis †Melidellavus †Mellalictis †Mesomephitis †Miomustela †Namibictis †Oaxacagale †Palaeomeles †Paragale †Parataxidea †Perunium †Plesictis †Plesiogale †Plesiomeles †Prepoecilogale †Presictis †Promellivora †Proputorius †Pyctis †Sabadellictis †Semantor †Sinictis †Sivalictis †Skopelogale †Sonitictis †Taxodon †Trochotherium †Xenictis †Zorilla
Guloninae	†Canimartes Eira †Ferinestrix Gulo †Iberictis †Ischyrictis Martes Pekania †Plesiogulo †Plionictis †Sthenictis
Helictidinae	Melogale
Ictonychinae	†Baranogale †Brevimalictis †Cernictis †Eirictis †Enhydrictis Galictis Ictonyx †Lutravus Lyncodon †Martellictis †Negodiaetictis †Oriensictis †Pannonictis †Poecilictis Poecilogale †Sminthosinis †Stipanicicia †Trigonictis †Trochictis Vormela
Lutrinae	†Algarolutra Aonyx †Cyrnaonyx †Cyrnolutra †Djourabus Enhydra †Enhydriodon †Enhydritherium Hydrictis †Limnonyx Lontra Lutra †Lutraeximia †Lutrictis Lutrogale †Megalenhydris †Megencephalon †Melodon †Mionictis †Nesolutra †Paludolutra †Paralutra †Pelycictis Pteronura †Sardolutra †Satherium †Siamogale †Sivaonyx †Teruelictis †Torolutra †Tyrrhenolutra †Vishnuonyx
†Leptarctinae	Craterogale Leptarctus Trocharion
Melinae	†Arctomeles Arctonyx Meles †Promeles
Mellivorinae	†Ekorus †Eomellivora †Hoplictis Mellivora †Moralesictis
†Mustelavinae	Mustelavus
Mustelinae	†Dinogale †Lartetictis †Legionarictis Mustela Neogale †Tisisthenes
†Oligobuninae	Brachypsalis Corumictis Floridictis Megalictis Oligobunis Parabrachypsalis Paroligobunis Promartes Zodiolestes
Taxidiinae	†Chamitataxus †Pliotaxidea Taxidea

Taxon identifiers
Corumictis	Wikidata:Q108146761 GBIF:11220428 Paleobiology Database:413629

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