Notharctus venticolus (extinct)
Variant names:
 Cantius venticolis
 Notharctus venticolis
 Pelycodus venticolus

Latitudinal range: 42.3° to 43.2°
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Found in two samples

United States: Buck Spring Quarries (B-2 horizon) (Early Eocene), Deadman Butte (Early Eocene)

See also Notharctus, Notharctus robinsoni, Notharctus robustior, Notharctus sp., Notharctus tenebrosus