Alternative combination: Xystracanthus arcuatus
Belongs to Physonemus according to C. R. Eastman 1903
See also Hay 1902 and Leidy 1873
Sister taxa: Physonemus arcuatus, Physonemus carinatus, Physonemus gemmatus, Physonemus gigas, Physonemus gigii, Physonemus hamuspiscatorius, Physonemus mirabilis, Physonemus pandatus, Physonemus stellatus, Physonemus striatus, Physonemus subteres, Batacanthus baculiformis, Batacanthus stellatus, Batacanthus necis, Xystracanthus acinaciformis, Xystracanthus major, Xystracanthus anceps, Xystracanthus giganteus, Xystracanthus mirabilis, Xystracanthus reversus, Xystracanthus gracilis, Gnathacanthus striatus, Gnathacanthus triangularis
Distribution: found only at Leavenworth (Carboniferous of Kansas)
Specimen images are retrieved through the ePANDDA API.
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