Tromikosoma Mortensen, 1903

Anderson, Owen F., 2016, A review of New Zealand and southeast Australian echinothurioids (Echinodermata: Echinothurioida) — excluding the subfamily Echinothuriinae — with a description of a new species of Tromikosoma, Zootaxa 4092 (4), pp. 451-488 : 463

publication ID	https://doi.org/ 10.11646/zootaxa.4092.4.1
publication LSID	lsid:zoobank.org:pub:EA66CAE5-F6CE-44BA-A5FF-67F2BEE6DEE8
DOI	https://doi.org/10.5281/zenodo.6055442
persistent identifier	https://treatment.plazi.org/id/03A4AB67-FFEF-FF83-FF1D-F9B1FCC9607A
treatment provided by	Plazi
scientific name	Tromikosoma Mortensen, 1903
status

Treatment

Tromikosoma Mortensen, 1903 View in CoL

Type species: Sperosoma koehleri Mortensen, 1903 , by original designation.

Diagnosis. Sperosomatinae with pores on oral surface arranged in more or less single series. Test plates extremely brittle. Buccal sacs, if present, rudimentary only (emended from Fell 1966).

Remarks. There are 6 assigned species, all Recent ( Table 4 View TABLE 4 ). The fragility of the Tromikosoma test invariably leads to breaking up of the test plates into small fragments, (possibly before as well as after capture, Mortensen 1935) making delineation of plate boundaries extremely difficult.