- Cyrtonellida
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Cyrtonellida
Temporal range: Cambrian–Devonian[1]Scientific classification Kingdom: Animalia Phylum: Mollusca (unranked): Monoplacophora Class: Tergomya Order: †Cyrtonellida
Horny, 1963Cyrtonellida is a group of "monoplacophora", representing either a sister taxon to, or a polyphyletic assemblage including, the Trybliida.
- ^ Eric W. Holman (Autumn 1989). "Some Evolutionary Correlates of Higher Taxa". Paleobiology 15 (4): 357–363. doi:10.2307/2400759. JSTOR 2400759.
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