sclerodermite
English
[edit]Etymology
[edit]From sclero- + Ancient Greek δέρμα (dérma) + -ite.
Noun
[edit]sclerodermite (plural sclerodermites)
- (zoology) The hard integument of crustaceans.
- 1894, M. Berthelot, “Biographical Sketch of Henry Milne Edwards”, in Report of the Secretary of the Smithsonian Institution, page 721:
- In fact each zoonite in turn is formed of several distinct parts or sclerodermites, which also, by welding together, produce arrests of development and atrophied members.
- Synonym: sclerenchyma
- (zoology) A calcareous support structure, such as that produced by the corals in the Scleractinia order, by sclerosponges, and by some sea cucumbers.
- 1943, Thomas Wayland Vaughan, John West Wells, Revision of the Suborders Families, and Genera of the Scleractinia, page 32:
- The most recent study has been made by Hayasi (78), who finds that the calcareous lamellae which form the sclerodermites are formed by secretions of the calicoblasts and that the latter are not themselves calcified.
- 1963, University of Glasgow. Geological Department, Papers - Volume 25 -, page 153:
- The same is true of the sclerodermites of Holothuroidea but it is not true of other echinoderm microfossils, such as echinoid pedicellariæ and microcrinoids.
- 1972, Carbonate Sediments and Their Diagenesis, page 26:
- Where the sclerodermites are arranged in a linear series making an almost continuous ( commonly zig-zag, Fig.38) line of centres of calcification, the resulting trabecula has a circular cross-section equal to the equatorial section of a single sclerodermite.
- 1995, Susan J. Gaffey, Victor P. Zabielski, Charles Bronnimann, “Roles of Organics and Water in Preneomorphic and Early Neomorphic Alteration of Coralline Aragonites from San Salvador Island, Bahamas”, in H. Allen Curran, Brian White, editor, Terrestrial and shallow marine geology of the Bahamas and Bermuda, page 240:
- Observations made during microprobe analysis and with SEM indicate that calcitized sclerodermite centers are concentrated in horizons parallel to growth banding.
- 2012, T.L. Simpson, The Cell Biology of Sponges, page 158:
- The aspicular, aragonitic skeleton of a living sphictozoid (Neocoelia) lacks the sclerodermite microstructure in other aragonitic skeletons indicating a significant difference in the pattern of crystallization. The absence of entrapped siliceous spicules in this sponge does not appear to be the cause for the lack of sclerodermites since in Merlia sclerodermites are present but entrapped spicules are not ( Hartman and Goreau, 1970).