liik

Podichnus centrifugalis Bromley et Surlyk, 1973

Taksoni kirjeldused

Robinson & Lee, 2008

Emended diagnosis of P. centrifugalis. – A cluster of closely spaced holes in hard calcareous substrates, which have a hemispherical to irregular hollow at the shell surface with their edges more or less in contact and with a shaft at the bottom. The smaller hollows/shafts at the centre of the group are more or less perpendicular to the surface; the more peripheral hollows/shafts are typically larger, entering the
substrate obliquely or centrifugally. The diameter of the holes is up to ca.200 μm. The shell surface within the outline of the trace is all or mostly removed.

Blissett & Pickerill, 2007

Description – Groups of cylindrical pits and holes, ovate in outline, that are essentially vertically oriented. Groupings of four and six are observed. The spacing between individual holes and pits vary between each other and between each sample. Diameters of individual holes or pits vary, ranging from 220-440 μm for Podichnus having groupings of four and between 20-60 μm for groupings of six.

Sünonüümika
1973     Podichnus centrifugalis — Bromley & Surlyk , lk. 362, joon. 6-13
1977     Podichnus centrifugalis Surlyk et Bromley 1973 — Michalik , lk. 342, joon. Fig. 14:4,5, text fig. 15
1977     Podichnus centrifugalis — Radwański , lk. 249
1982     Podichnus centrifugalis — Bromley et al. , lk. 93, joon. 1:4-8; 2:1,2
1987     Podichnus centrifugalis Bromley & Surlyk — Vogel et al. , lk. 278, joon. Fig. 10
1990     Podichnus isp. — Bromlaey D’Alessandro , lk. 48, joon. 16
1993     Podichnus — Palmer & Plewes , lk. 141, joon. 9C
1996     Podichnus centrifugalis Bromley & Surlyk, 1973 — Hofmann , lk. 54, joon. 2:2,3
2002     Podichnus centrifugalis Bromley & Surlyk, 1973 — Taddei Ruggiero & Annunziata , lk. 48, joon. 3:1-6
2004     Podichnus centrifugalis Bromley & Surlyk, 1973 — Donovan & Lewis , lk. 368, joon. 2, 3
Valik taksonit käsitlevast teaduskirjandusest
Sørensen, A.M., Surlyk, F. 2008. A brachiopod boring (Podichnus) in a Late Cretaceous oyster from a mangrove-like environment, Skåne, Sweden. Lethaia 41, 3, 295–298. DOI:10.1111/j.1502-3931.2008.00107.x
Levik kirjandusandmetel