Commensalism in the fossil record: Eunicid polychaete bioerosion on Pliocene solitary corals
Jordi Martinell,Rosa Domènech +1 more
TLDR
In the fossil record, Sulcichnus occurs associated to shallow marine environments whereas their Recent counterparts are described on deep-marine corals, which is interpreted as a consequence of a change in the environmental requirements of the coral/worm pair.Abstract:
Some solitary caryophylliid (Caryophyllia, Trochocyathus, and Ceratotrochus) and flabellid (Flabellum) scleractinian corals from Pliocene of Western Mediterranean exhibit long groove-shaped bioersional structures running along the surface of the thecae. They are epigenic structures produced by an episkeletozoan and therefore, they are described as Fixichnia. Here we propose Sulcichnus as a new ichnogenus, with three new ichnospecies (Sulcichnus maeandriformis, S. helicoidalis, and S. sigillum) to name this traces. Sulcichnus is attributed to the activity of polychaetes. Similar structures are recently produced by Lumbrineris flabellicola, a symbiotic eunicid which maintains a commensalistic relationship with solitary corals. In the fossil record, Sulcichnus occurs associated to shallow marine environments whereas their Recent counterparts are described on deep-marine corals. We interpret this as a consequence of a change in the environmental requirements of the coral/worm pair.read more
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Book
Fossil Behavior Compendium
TL;DR: A review of dendrinings attributed to foraminiferans: Semidendrina gen. nov within the boring Entobia cretacea, Cretaceous, England.
Journal ArticleDOI
Categories of architectural designs in trace fossils: A measure of ichnodisparity
TL;DR: Ichnodisparity has been recently introduced as a concept to assess the variability of morphologic plans in biogenic structures, revealing major innovations in body plan, locomotory system and/or behavioral program.
Journal ArticleDOI
Evolutionary Paleobiology of Behavior and Coevolution, A.J. Boucot (Ed.). Elsevier, Amsterdam (1990), xxiii
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Is absence of proof a proof of absence? Comments on commensalism
TL;DR: Commensalism as a null hypothesis in paleoecology cannot be retained, as the possibility of making a type II error is very high and the terms “paroecia" and “endoecia” seem to be more useful to use in cases when a particular ecological relationship is difficult to prove.
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Bioerosion ichnotaxa: review and annotated list
TL;DR: The status quo of an inventory of all bioerosion ichnotaxa is presented, and a suite of 14 additional ichnofamilies are introduced: Gastrochaenolitidae, Talpinidae, Entobiaidae, Planobulidae, and Saccomorphidae are introduced.
References
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Journal ArticleDOI
Palaeoecology and evolution of marine hard substrate communities
Paul D. Taylor,Mark A. Wilson +1 more
TL;DR: Hard substrate communities are formed by organisms with a variety of strategies for adhering to and/or excavating the substrates they inhabit as discussed by the authors, and they are excellent systems with which to study community evolution over hundreds of millions of years.
Journal Article
Symbiotic polychaetes: Review of known species
Daniel Martin,Temir A. Britayev +1 more
TL;DR: The main characteristic features of symbiotic polychaetes and their relationships are discussed and include systematic account, distribution within host groups, host specificity, intra-host distribution, location on the host, infestation prevalence and intensity, and morphological, behavioural and/or physiological and reproductive adaptations.
Book
Predator-Prey Interactions in the Fossil Record
TL;DR: This volume, compiled by a group of expert specialists on the evidence of predator-prey interactions in the fossil record, is a pioneering effort to collate the information now accumulating in this important field.
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Patterns and processes of shell fragmentation in modern and ancient marine environments
TL;DR: In this paper, the authors define a fragment as being a piece of shell having less than 90% of its original form and outline the potential characteristics, pathways, and fates that shells and their fragments can have.
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Palaeoecology and evolution of marine hard substrate communities
Paul D. Taylor,Mark A. Wilson +1 more