Citation (Article)

Glaessner, M.F. 1928. Zur Frage der ältesten fossilen Krabben. Centralblatt für Mineralogie, Geologie, und Paläontologie, B(6): 388–398.

Original Classification

Superfamily †Cycloidea Packard, 1885

New group

Superfamily †Cycloidea n. superfam.
Family †Cyclidae n. fam.
Family †Mesoprosoponidae n. fam.

New position

Family †Hemitrochiscidae Trauth, 1918
Genus †Carcinaspis Schafh.
Genus †Cyclus de Kon., 1841
Genus †Mesoprosopon Stolley