TY - GEN
T1 - Bridges between radial wedges (septs) in two diadematid spine types
AU - Stock, Stuart R
AU - De Carlo, F.
AU - Xiao, X.
AU - Ebert, T. A.
PY - 2010
Y1 - 2010
N2 - Diadematid spines differ in the details of their structural architecture, and this paper examines differences in the architecture of Astropyga radiata and Diadema antillarum spines revealed by synchrotron micro Computed Tomography (microCT). The focus is on the radial wedges (septs) comprising the majority of the calcite volume of the spines and, in particular, on the bridges joining adjacent wedges. Bridges in D. antillarum are much larger and sparser than those in A. radiata. The A. radiata bridges tend to be regularly spaced with rows of three to five bridges running perpendicular to the spine axis; smaller cross-sections, found closer to the spine axis, tend to be circular and larger, more abaxial bridges have oval cross-sections. In D. antillarum, the bridges have oval cross-sections and join the inner portions of the wedges; further, bridges between groups of six or more adjacent wedges spiral helically along the spine axis.
AB - Diadematid spines differ in the details of their structural architecture, and this paper examines differences in the architecture of Astropyga radiata and Diadema antillarum spines revealed by synchrotron micro Computed Tomography (microCT). The focus is on the radial wedges (septs) comprising the majority of the calcite volume of the spines and, in particular, on the bridges joining adjacent wedges. Bridges in D. antillarum are much larger and sparser than those in A. radiata. The A. radiata bridges tend to be regularly spaced with rows of three to five bridges running perpendicular to the spine axis; smaller cross-sections, found closer to the spine axis, tend to be circular and larger, more abaxial bridges have oval cross-sections. In D. antillarum, the bridges have oval cross-sections and join the inner portions of the wedges; further, bridges between groups of six or more adjacent wedges spiral helically along the spine axis.
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M3 - Conference contribution
AN - SCOPUS:84858693997
SN - 9780415408196
T3 - Echinoderms: Durham - Proceedings of the 12th International Echinoderm Conference
SP - 263
EP - 267
BT - Echinoderms
T2 - 12th International Echinoderm Conference
Y2 - 7 August 2006 through 11 August 2006
ER -