Published December 31, 2015 | Version v1
Taxonomic treatment Open

Thalassocrinus A.H. Clark 1911

Creators

Description

Genus Thalassocrinus A.H. Clark, 1911

Type species of the genus: Thalassocrinus pontifer A.H. Clark, 1911.

Synonymy: A.H. Clark, 1911: 174; 1915: 160; Gislén, 1939: 13; Roux, 1980: 40–42; Mironov & Sorokina, 1998: 34; Roux, 2002: 174; Roux & Lambert, 2011: 48, 51.

Remarks. Roux & Lambert (2011) suspected Thalassocrinus to be a polyphyletic genus. They pointed out significant differences in anal sac features that suggested close affinities between (1) T. pontifer and Hyocrinus bethellianus Thomson, 1876, (2) T. alvinae Roux, 2002, and T. clausus Mironov & Sorokina, 1998, and (3) T. mironovi Roux, 2002, and Laubiericrinus pentagonalis Roux, 2004. Molecular phylogeny (Roux et al. 2013) confirmed that T. pontifer and H. bethellianus are closely related. DNA sequences from the four other species need to be added to get a better understanding of the interrelationships between these species. The genus Thalassocrinus sensu lato is therefore provisionally maintained.

Notes

Published as part of Roux, Michel, 2015, Crinoids of the stalked family Hyocrinidae (Echinodermata) collected by the USNS Eltanin in the Southern Ocean, pp. 381-409 in Zootaxa 3990 (3) on page 405, DOI: 10.11646/zootaxa.3990.3.4, http://zenodo.org/record/243049

Files

Files (1.5 kB)

Name Size Download all
md5:b633fedfd2c33b050dfebdcdbd84170b
1.5 kB Download

System files (11.7 kB)

Name Size Download all
md5:30510cd640a5709f688562d4fa68c2bc
11.7 kB Download

Linked records

Additional details

Biodiversity

Family
Hyocrinidae
Genus
Thalassocrinus
Kingdom
Animalia
Order
Hyocrinida
Phylum
Echinodermata
Scientific name authorship
A.H. Clark
Taxon rank
genus
Taxonomic concept label
Thalassocrinus Clark, 1911 sec. Roux, 2015

References

  • Clark, A. H. (1911) Thalassocrinus, a new genus of stalked crinoids from East Indies. Proceedings of the United States national Museum, 39, 473 - 476. http: // dx. doi. org / 10.5479 / si. 00963801.39 - 1793.473
  • Gislen, T. (1939) On the young of a stalked deep-sea crinoid and the affinities of the Hyocrinidae. Lunds Universitets Arsskrift, N. F., 34 (17), 1 - 18.
  • Mironov, A. N. & Sorokina, O. A. (1998) Sea lilies of the order Hyocrinida (Echinodermata, Crinoidea). Zoologicheskie Issledovania, 2, 1 - 117. [in Russian]
  • Roux, M. & Lambert, P. (2011) Two new species of stalked crinoids from the north-eastern Pacific in the genera Gephyrocrinus and Ptilocrinus (Echinodermata, Crinoidea, Hyocrinidae). Effects of ontogeny and variability on hyocrinid taxonomy. Zootaxa, 2825, 1 - 54.
  • Thomson, C. W. (1876) Notice on new living crinoids belonging to the Apiocrinidae. Journal of the Linnean Society of London, 13, 47 - 55. http: // dx. doi. org / 10.1111 / j. 1096 - 3642.1876. tb 00208. x
  • Roux, M. (2004) New hyocrinid crinoids (Echinodermata) from submersible investigations in the Pacific Ocean. Pacific Science, 58 (4), 597 - 613. http: // dx. doi. org / 10.1353 / psc. 2004.0042
  • Roux, M., Eleaume, M., Hemery, L. G. & Ameziane, N. (2013) When morphology meets molecular data in crinoid phylogeny: a challenge. Cahiers de Biologie Marine, 54, 541 - 548.