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Sublethal shell injuries in Late Devonian ammonoids (Cephalopoda) from Kattensiepen (Rhenish Mountains)


Slotta, F; Korn, D; Klug, C; Kröger, B; Keupp, H (2011). Sublethal shell injuries in Late Devonian ammonoids (Cephalopoda) from Kattensiepen (Rhenish Mountains). Neues Jahrbuch für Geologie und Paläontologie, 261(3):321-336.

Abstract

The ammonoids from the middle Famennian black limestone nodules at Kattensiepen (Rhenish Mountains) are known for their excellent preservation and show frequent sublethal shell damage of varying dimensions and of the finest detail. 76% of all specimens show traces of predation. This is the highest frequency of shell repairs known from the Palaezoic. While small individuals are less frequently affected, nearly all adult specimens of the species Platyclymenia annulata, Pl. subnautilina, Pleuroclymenia costata, and Prionoceras divisum display repaired injuries. Usually, the specimens show multiple areas of damage, which can be classified into several categories. Most of the points of damage are small, affecting only the margin of the aperture; they usually occur on both sides of the conch. Shell damage, which can be interpreted as bite marks are rare; the majority of shell injuries derive perhaps from arthropod attacks.

Abstract

The ammonoids from the middle Famennian black limestone nodules at Kattensiepen (Rhenish Mountains) are known for their excellent preservation and show frequent sublethal shell damage of varying dimensions and of the finest detail. 76% of all specimens show traces of predation. This is the highest frequency of shell repairs known from the Palaezoic. While small individuals are less frequently affected, nearly all adult specimens of the species Platyclymenia annulata, Pl. subnautilina, Pleuroclymenia costata, and Prionoceras divisum display repaired injuries. Usually, the specimens show multiple areas of damage, which can be classified into several categories. Most of the points of damage are small, affecting only the margin of the aperture; they usually occur on both sides of the conch. Shell damage, which can be interpreted as bite marks are rare; the majority of shell injuries derive perhaps from arthropod attacks.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Paleontological Institute and Museum
Dewey Decimal Classification:560 Fossils & prehistoric life
Uncontrolled Keywords:Devonian, Famennian, Ammonoidea, shell injuries, regeneration
Language:English
Date:2011
Deposited On:04 Oct 2011 09:15
Last Modified:05 Apr 2016 15:01
Publisher:Schweizerbart
ISSN:0077-7749
Publisher DOI:https://doi.org/10.1127/0077-7749/2011/0173

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