Cyrtonellida

Cyrtonellida
Cyrtonellida
Temporal range: Cambrian–Devonian[1]
Scientific classification e
Kingdom: Animalia
Phylum: Mollusca
(unranked): Monoplacophora
Class: Tergomya
Order: Cyrtonellida
Horny, 1963

Cyrtonellida is a group of "monoplacophora", representing either a sister taxon to, or a polyphyletic assemblage including, the Trybliida.

  1. ^ Eric W. Holman (Autumn 1989). "Some Evolutionary Correlates of Higher Taxa". Paleobiology 15 (4): 357–363. doi:10.2307/2400759. JSTOR 2400759.  edit