Codasteridae

Belongs within: Blastoidea.

The Codasteridae are a Devonian to Permian group of blastoids with eight hydrospire fields.

Characters (from Beaver et al. 1967): Theca with eight exposed or constricted hydrospire fields; hydrospire slits lacking on anal side.

<==Codasteridae [Angioblastidae]
    |--Emuhablastus Waters, Maples et al. 2003WM03
    |    `--*E. planus Waters, Maples et al. 2003WM03
    |--Heteroschisma Wachsmuth 1883BF67
    |    |--*H. gracile Wachsmuth 1883 [incl. Trionoblastus Fay 1961]BF67
    |    |--H. canadenseBF67
    |    |--H. pyramidatusBF67
    |    `--H. subtruncatus (Hall 1858) [=Pentremites subtruncatus, *Trionoblastus subtruncatus]BF67
    `--+--Codaster M’Coy 1849BF67
       |    `--*C. acutus M’Coy 1849BF67
       `--+--TympanoblastusWM03
          |--Angioblastus Wanner 1931BF67
          |    `--*A. variabilis Wanner 1931BF67
          |--Agmoblastus Fay 1961BF67
          |    `--*A. dotti (Moore & Strimple 1942) [=Paracodaster dotti]BF67
          |--Indoblastus Wanner 1924BF67
          |    `--*I. granulatus Wanner 1924BF67
          |--Sagittoblastus Yakovlev 1937BF67
          |    `--*S. wanneri (Yakovlev 1926) [=Timoroblastus wanneri]BF67
          |--Paracodaster Yakovlev 1940BF67
          |    `--*P. miloradovitschi Yakovlev 1940BF67
          |--Nannoblastus Wanner 1924BF67
          |    |--*N. pyramidatus Wanner 1924BF67
          |    `--N. cuspidatus Wanner 1924SG93
          `--Pterotoblastus Wanner 1924BF67
               |--*P. gracilis Wanner 1924BF67
               |--P. brevialatus Wanner 1931SG93
               |--P. decemcostis Wanner 1931SG93
               `--P. ferrugineus Wanner 1940SG93

*Type species of generic name indicated

References

[BF67] Beaver, H. H., R. O. Fay, D. B. Macurda Jr, R. C. Moore & J. Wanner. 1967. Blastoids. In: Moore, R. C. (ed.) Treatise on Invertebrate Paleontology pt S. Echinodermata 1. General characters. Homalozoa—Crinozoa (except Crinoidea) vol. 2 pp. S297–S455. The Geological Society of America, Inc., and The University of Kansas: Lawrence (Kansas).

[SG93] Simms, M. J., A. S. Gale, P. Gilliland, E. P. F. Rose & G. D. Sevastopulo. 1993. Echinodermata. In: Benton, M. J. (ed.) The Fossil Record 2 pp. 491–528. Chapman & Hall: London.

[WM03] Waters, J. A., C. G. Maples, N. G. Lane, S. Marcus, Liao Z.-T., Liu L., Hou H.-F. & Wang J.-X. 2003. A quadrupling of Famennian pelmatozoan diversity: new Late Devonian blastoids and crinoids from northwest China. Journal of Paleontology 77 (5): 922–948.