Ichnofossils

Sanctum Erickson et Bouchard, 2003

Taxon description

Buatois et al., 2017

Sanctum Erickson and Bouchard, 2003 is a roughly clavate, irregular boring excavated in the weakly-skeletonized endozones of trepostome bryozoans. It was emended by Wyse Jackson and Key (2007) to include the possibility of two openings.

Buatois et al., 2017

2.66. Clavate-shaped borings

Knaust, 2012a

Unbranched, branched, clavate.

Diagnosis. Domichnia originated by boring a single, circular opening through exozonal skeleton, followed by removal of endozonal skeleton to produce dwelling chambers. Chambers of varying shapes, linear, clavate, flabellate or irregular, ratherroughly, mechanically excavated out of endozonal skeleton in both ramose-twig or frondose-blade growth forms of Paleozoic Bryozoa. Characteristics of openings and chambers as presently known are those of the type species.

Selection of related publications
Toom, U., Vinn, O. & Hints, O. 2018. Ordovician and Silurian ichnofossils from carbonate facies in Estonia: A collection-based review. Palaeoworld , 1-22. DOI:10.1016/j.palwor.2018.07.001
Wyse Jackson, P. N. & Key, M. M. 2007. Borings in trepostome bryozoans from The Ordovician of Estonia: two ichnogenera produced by a single marker, a case of host morphology control. Lethaia 40, 3, 237-252. DOI:10.1111/j.1502-3931.2007.00021.x