Bivalvia - Protobranchia - Malletiidae

Alternative combinations: Anthraconeilo mcchesneyana, Yoldia mcchesneyana

Full reference: G. H. Girty. 1910. The fauna of the Phosphate beds of the Park City Formation. United States Geological Survey Bulletin 436:1-82

Belongs to Palaeoneilo according to Z.J. Fang 1987

Sister taxa: Palaeoneilo acarinata, Palaeoneilo arctica, Palaeoneilo artiensis, Palaeoneilo centralis, Palaeoneilo cuneiformis, Palaeoneilo elliptica, Palaeoneilo excentrica, Palaeoneilo fecunda, Palaeoneilo fibularis, Palaeoneilo fortistriata, Palaeoneilo galatea, Palaeoneilo guizhouensis, Palaeoneilo leiyangensis, Palaeoneilo lutosa, Palaeoneilo magna, Palaeoneilo occidentalis, Palaeoneilo ogachiensis, Palaeoneilo oviformis, Palaeoneilo parenica, Palaeoneilo postolegi, Palaeoneilo praeacuta, Palaeoneilo qujianensis, Palaeoneilo qujiangensis, Palaeoneilo sera, Palaeoneilo shaoyangensis, Palaeoneilo sinuata, Palaeoneilo smithi, Palaeoneilo subcarinata, Palaeoneilo subexcentrica, Palaeoneilo suborbicularis, Palaeoneilo subtenella, Palaeoneilo sunanensis, Palaeoneilo symmetricus, Palaeoneilo tebagaensis, Palaeoneilo thorslundi, Palaeoneilo tirolensis, Palaeoneilo yanjiensis, Palaeoneilo yongdingensis

Type specimen: Its type locality is USGS 980, Waterloo Mine, Montpelier, which is in a Roadian offshore ramp limestone in the Phosphoria Formation of Idaho

Ecology: facultatively mobile infaunal deposit feeder

Average measurements (in mm): shell 3.55 x 3.60, valve length 6.53