Cladaster Verrill 1899
Creators
Description
Cladaster Verrill, 1899
Verrill, 1899: 175; Fisher, 1911: 221; Bernasconi, 1963: 13; 1964: 255; Halpern, 1970b: 179; Clark & Downey, 1992: 238; Clark, 1993: 251.
Diagnosis. Body weakly stellate. Abactinal plates low tabulate with weakly to strongly expressed fasciolar channels. Hemispherical granules present on abactinal, marginal, and actinal plate surface which are deciduous on preserved specimens. Large, spatulate type pedicellariae present. Furrow spines, two, thickened and oval in crosssection. Large, thick subambulacral spine present in addition to furrow spine
Comments. Cladaster includes five nominal species, some of which are separated by either continuous character differences (i.e., number of superomarginals vary between species, number of granules per plate surface, relative thickness of furrow spines) or relatively few, discrete character differences. Clark and Downey (1992) and McKnight (2006) have also commented on how ontogenetic characters, such as specimen size and number of abutting superomarginal plates have been the primary means of distinguishing species. Factors such as the wide geographic separation of known species and paucity of specimens have encouraged retention of established Cladaster species, in spite of overlapping characters and discrete taxonomic boundaries.
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Linked records
Additional details
Identifiers
Related works
- Is part of
- Journal article: 10.5281/zenodo.276783 (DOI)
- Journal article: http://publication.plazi.org/id/FFEBFFEAFFC4FF9D847312686C098034 (URL)
- Is source of
- https://sibils.text-analytics.ch/search/collections/plazi/03D28792FFD6FF8F84E416ED6FF68696 (URL)
Biodiversity
- Family
- Goniasteridae
- Genus
- Cladaster
- Kingdom
- Animalia
- Order
- Valvatida
- Phylum
- Echinodermata
- Scientific name authorship
- Verrill
- Taxon rank
- genus
- Taxonomic concept label
- Cladaster Verrill, 1899 sec. Mah, 2011
References
- Fisher, W. K. (1911) Asteroidea of the North Pacific and adjacent waters. 1. Phanerozonia and Spinulosida. Bulletin of the US National Museum, 76, 1 - 420.
- Bernasconi, I. (1963) Asteroideos Argentinos. IV. Familia Goniasteridae. Revista del Museo Argentino de Ciencias naturales (Zoologia) 9 (4), 58 - 89.
- Halpern, J. A. (1970 b) A monographic revision of the goniasterid sea stars of the North Atlantic. Unpublished PhD dissertation: University of Miami, 253 pp.
- Clark, A. M. & Downey, M. E. (1992) Starfishes of the Atlantic. Chapman and Hall, London, 794 pp.
- Clark, A. M. (1993) An index of names of recent Asteroidea - Part 2: Valvatida. Echinoderm Studies, 4, 187 - 366.
- McKnight, D. G. (2006) The Marine Fauna of New Zealand: Echinodermata: Asteroidea (sea-stars). 3. Orders Velatida, Spinulosida, Forcipulatida, Brisingida with addenda to Paxillosida, Valvatida. NIWA Biodiversity Memoir, 120, 1 - 187.