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Belaústegui et al., 2017

Echinoderm ichnology: bioturbation, bioerosion and related processes

Belaústegui, Z., Muñiz, F., Nebelsick, J. H., Domènech, R., Martinell, J.
DOI10.1017/jpa.2016.146
Aasta2017
AjakiriJournal of Paleontology
Köide91
Number4
Leheküljed643-661
Tüüpartikkel ajakirjas
Keelinglise
Id7137

Abstrakt

Among invertebrates and both in modern and ancient marine environments, certain echinoderms have been and are some of the most active and widespread bioturbators and bioeroders. Bioturbation and/or bioerosion of regular and irregular echinoids, starfish, brittle stars, sea cucumbers and crinoids are known from modern settings, and some of the resulting traces have their counterparts in the fossil record. By contrast, surficial trails or trackways produced by other modern echinoderms, e.g., sand dollars, exhibit a lower preservation rate and have not yet been identified in the fossil record. In addition, the unique features of the echinoderm skeleton (e.g., composition, rapid growth, multi-element architecture, etc.) may promote the production of related traces produced by the reutilization of echinoderm ossicles (e.g., burrow lining), predation (e.g., borings), or parasitism (e.g., swellings or cysts). Finally, the skeletal robustness of some echinoids may promote their post mortum use as benthic islands for the settlement of hard-substrate dwellers.

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