Plesiosminthus clivosus (extinct)
Variant names:
 Schaubeumys clivosus

Latitudinal range: 40.9° to 42.8°
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Found in two samples

United States: McCann Canyon (Early Miocene), Martin Canyon Quarry A (Early Miocene)

See also Plesiosminthus, Plesiosminthus conjunctus, Plesiosminthus fremdi, Plesiosminthus myarion, Plesiosminthus promyarion, Plesiosminthus schaubi, Plesiosminthus sp.