Xenocrinus

Xenocrinus baeri
Photo courtesy of Jack Kallmeyer
Scale bar is 1 cm
Species
Xenocrinus baeri (Meek)
Occurrence: Liberty
Reference: Ausich, 1996
Calyx with prominent ray ridges; distinctive square stem
Xenocrinus penicillus Miller
Occurrence: Liberty
Reference: Dalvé, 1948
Valid species?