Circothecidae

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Circothecidae
Scientific classification e
Kingdom: Animalia
Clade: Brachiozoa
Class: Hyolitha
Order: Orthothecida (?)
Family: Circothecidae

Circothecidae are a family of Cambrian problematica, sometimes attributed to the Hyolitha,[1] though some authors suggest (on the basis of no specified evidence) that they're definitely not.[2]

References[]

  1. ^ 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
  2. ^ 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


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