Psathyrometra

Superregnum: Eukaryota
Cladus: Amorphea
Cladus: Obazoa
Cladus: Opisthokonta
Cladus: Holozoa
Cladus: Filozoa
Cladus: Choanozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: ParaHoxozoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Echinodermata
Subphylum: Crinozoa
Classis: Crinoidea
Subclassis: Articulata
Ordo: Comatulida
Subordo: Macrophreata
Familia: Zenometridae
Genus: Psathyrometra
Species: P. fragilis

• Clark, A.H. 1907. New Genera of Recent Free Crinoids. Smithsonian Miscellaneous Collections 50(3): 343–364. BHL Reference page. 
• Mao, J-W., Zhang, R-Y., Eléaume, M., Zhou, Y-D., Zhang, D-S., Sun, S., Sha, Z-L., Wang, C-S. 2025. Description of three new species of Zenometridae (Echinodermata, Crinoidea, Comatulida), with new insights on species and genus delimitation. Zoological Journal of the Linnean Society 204(4): 1–20. DOI: 10.1093/zoolinnean/zlaf089 . Reference page.  [as Psathyrometra p. 10]
• Messing, C.G. & White, C.M. 2001. A revision of the Zenometridae (new rank) (Echinodermata, Crinoidea, Comatulidina). Zoologica Scripta 30(3): 159–180. DOI: 10.1046/j.1463-6409.2001.00062.x Reference page.