The Bioeroding Sponge Aka paratypica, a Modern Tracemaking Analogue for the Paleozoic Ichnogenus Entobia devonica

Schönberg, Christine H. L. and Tapanila, Leif (2006) The Bioeroding Sponge Aka paratypica, a Modern Tracemaking Analogue for the Paleozoic Ichnogenus Entobia devonica. Ichnos, 13 3: 147-157. doi:10.1080/10420940600851552


Author Schönberg, Christine H. L.
Tapanila, Leif
Title The Bioeroding Sponge Aka paratypica, a Modern Tracemaking Analogue for the Paleozoic Ichnogenus Entobia devonica
Journal name Ichnos   Check publisher's open access policy
ISSN 1042-0940
Publication date 2006
Sub-type Article (original research)
DOI 10.1080/10420940600851552
Volume 13
Issue 3
Start page 147
End page 157
Total pages 11
Editor Richard K. Pickerill
S. George Pemberton
Place of publication United States
Publisher Taylor & Francis Inc.
Collection year 2006
Language eng
Subject C1
270702 Marine and Estuarine Ecology (incl. Marine Ichthyology)
780105 Biological sciences
Abstract Many attempts have been made by ichnologists to match bioerosion traces to their respective tracemakers. This task has been considered difficult, especially for fossil samples. The present study demonstrates that the Australian bioeroding sponge Aka paratypica can generate a cavity similar to the ichnospecies Entobia devonica. The modern sponge and its cavity are redescribed and compared to the fossil boring. A. paratypica has white fistules and soft, mucoid endosomal tissue. Spicules are stout oxeas with often telescoped or mucronate tips. Observed borings of A. paratypica are rounded and cavernous, with canals and apertures radiating from the chambers in all directions. It was noted that the internal openings of such canals are covered with porous nodules, which may act as sieves against larger particles or intruding endofauna. No obvious microsculpturing was observed in the erosion scars. A. paratypica borings are analogous to ancient E. devonica borings, which to date were only known from the fossil record.
Keyword ichnology
Entobia devonica
Aka paratypica
bioerosion
sponges
Great Barrier Reef
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2007 Higher Education Research Data Collection
Centre for Marine Studies Publications
 
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Created: Wed, 15 Aug 2007, 10:59:20 EST