The oldest deep-boring bivalves? Evidence from the Silurian of Gotland (Sweden)
Claußen AL, Munnecke A, Wilson MA, Oswald I (2019)
Publication Type: Journal article, Original article
Publication year: 2019
Journal
Book Volume: 65
Article Number: 26
Journal Issue: 3
DOI: 10.1007/s10347-019-0570-7
Abstract
Compared to modern counterparts, bioerosion is rare in Paleozoic reefs, especially macro-bioerosion. The unique and enigmatic Silurian reefs from Gotland (Sweden), composed of bryozoans and microbial laminates, show evidence of a large amount of bioerosion. The samples contain Trypanites trace fossils, as well as a large number of undescribed macroborings. Small articulated bivalve shells are preserved in some of these macroborings, identified from thin-sections. Three-dimensional images from micro-computed tomography (microCT) reveal an additional bivalve, which is occupying a bioerosion trace. This specimen is possibly contained in a different boring that can be classified as possibly clavate-shaped. Furthermore, evidence of nestling, such as a subsequent modification of the ichnofossils, the presence of bivalves that are much smaller than the trace, or the presence of additional specimens, is missing; therefore, it is most likely that the bivalves made the borings. This is evidence for the existence of deep-boring bivalves in the Silurian.
Authors with CRIS profile
Anna Lene Claußen
Professur für Paläontologie (Schwerpunkt Faziesanalyse)
Axel Munnecke
Professur für Paläontologie (Schwerpunkt Faziesanalyse)
Involved external institutions
United States (USA) (US)How to cite
APA:
Claußen, A.L., Munnecke, A., Wilson, M.A., & Oswald, I. (2019). The oldest deep-boring bivalves? Evidence from the Silurian of Gotland (Sweden). Facies, 65(3). https://dx.doi.org/10.1007/s10347-019-0570-7
MLA:
Claußen, Anna Lene, et al. "The oldest deep-boring bivalves? Evidence from the Silurian of Gotland (Sweden)." Facies 65.3 (2019).
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