Home|Search|Identify|Taxonomic tree|Quiz|About this site|Feedback
Developed by ETI BioInformatics
Characteristics, distribution and ecology
Taxonomische classification
Synonyms and common names
Literature references
Images, audio and video
Links to other Web sites

(Schmidt, 1870)

Species Overview

Tentorium semisuberites (Schmidt, 1870) is a characteristic toadstool-like yellowish grey sponge. It consists of a smooth basal cylindrical part topped by a semiglobular upper-half provided with one or more chimney-like papillae. It is a deep-water species.

Taxonomic Description

Colour: Yellowish grey, lighter coloured along the sides.
Shape, size, surface and consistency: Short, squat cylinders with a convex upper side bearing one or several elevated/elongated papillae. Size up to 3.5 cm high, 3 cm in diameter. Surface smooth, slippery. Papillae thin-walled. Consistency firm but compressible.
Spicules: (Tentorium semisuberites spics) Tylostyles in three categories: long tylostyles of the basal part: 960-2400 x 13-24 µm; tylostyles of the upper parts: 808-1140 x 21-33 µm; tylostyles of the surface palisade: 274-670 x 13-21 µm.
Skeleton: The basal part has longitudinal bundles of long tylostyles; these grade into diverging bundles of the upper part and the papillae; at the periphery there is a palisade of small tylostyles.
Ecology: On gravel and dead corals, deep water, 26-2970 m.
Distribution: SW Ireland, Norway, Arctic; also recorded from the Southern Ocean.
Etymology: The name refers to the (vague) resemblance to Suberites.
Type specimen information: The type is in the Copenhagen Museum; there is an original slide in the Natural History Museum, London: BMNH 1870:5:3:86 (as Thecophora semisuberites n.g.n.s); also Tentorium semisuberites BMNH 1910.1.1.1207. Norwegian Arctic Emperor 1876-8. Dr. A Hansen. Norman Collection. Type?


This species is easily recognizable on sight. There are no close relatives.
Source: Arndt, 1935.

Tentorium semisuberites