Template:Taxonomy/Circothecidae

Bold ranks show taxa that will be shown in taxoboxes
because rank is principal or always_display=yes.

Ancestral taxa
Domain: Eukaryota /displayed  [Taxonomy; edit]
Clade: Amorphea  [Taxonomy; edit]
Clade: Obazoa  [Taxonomy; edit]
(unranked): Opisthokonta  [Taxonomy; edit]
(unranked): Holozoa  [Taxonomy; edit]
(unranked): Filozoa  [Taxonomy; edit]
Clade: Choanozoa  [Taxonomy; edit]
Kingdom: Animalia  [Taxonomy; edit]
Subkingdom: Eumetazoa  [Taxonomy; edit]
Clade: ParaHoxozoa  [Taxonomy; edit]
Clade: Bilateria  [Taxonomy; edit]
Clade: Nephrozoa  [Taxonomy; edit]
(unranked): Protostomia  [Taxonomy; edit]
(unranked): Spiralia  [Taxonomy; edit]
Superphylum: Lophotrochozoa  [Taxonomy; edit]
Clade: Lophophorata  [Taxonomy; edit]
Clade: Brachiozoa  [Taxonomy; edit]
Phylum: Brachiopoda  [Taxonomy; edit]
Class: Hyolitha  [Taxonomy; edit]
Order: Orthothecida (?) /?  [Taxonomy; edit]
Family: Circothecidae  [Taxonomy; edit]


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Parent: Orthothecida/? [Taxonomy; edit]
Rank: familia (displays as Family)
Link: Circothecidae
Extinct: yes
Always displayed: yes (major rank)
Taxonomic references: Brasier, M. D. (1986). The succession of small shelly fossils (especially conoidal microfossils) from English Precambrian–Cambrian boundary beds. Geological Magazine, 123(3), 237–256. doi:10.1017/S0016756800034737

Argued not to be hyoliths at all by: Webers, G. F., & Yochelson, E. L. (1989). Late Cambrian molluscan faunas and the origin of the Cephalopoda. Geological Society, London, Special Publications, 47(1), 29–42. doi:10.1144/gsl.sp.1989.047.01.04

Parent's taxonomic references: