Symbiosis in brachiopods and brachiopod-attached trepostome bryozoans from the Katian of Estonia
Vinn, Olev; Ernst, Andrej; Wilson, Mark A.; Tinn, Oive; Isakar, Mare; Toom, Ursula
Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen Band 307 Heft 1 (2023), p. 41 - 50
59 references
published: Jan 31, 2023
manuscript accepted: Dec 19, 2022
manuscript received: Nov 17, 2022
ArtNo. ESP155030701003, Price: 29.00 €
Abstract
Valves of the strophomenid brachiopod Sowerbyella tenera are often encrusted by trepostome bryozoan colonies in the lower Katian of Estonia. In some cases, the encrustation of Sowerbyella likely took place syn vivo. A single Sowerbyella tenera contains three Palaeosabella prisca borings that were bored post mortem into the interface between the encrusting trepostome colony and the ventral valve of Sowerbyella. The encrusting trepostome colonies contain a large bioclaustration in a tubular outgrowth of the bryozoan colony, Anoigmaichnus-like bioclaustrations, Kuckerichnus-like bioclaustrations, A. zapalskii, A. bretti, and a symbiotic conulariid. The bioclaustrated soft-bodied organisms and the conulariid colonized living bryozoans.
Keywords
Brachiopods • Bryozoa • bioclaustration • bioerosion • Upper Ordovician • Baltica