Morphology and mode of life of the BivalvesNuculoidea Vespan.sp. andNuculoidea Umbran.sp. from the Devonian of New Zealand
- 1 April 1974
- journal article
- research article
- Published by Taylor & Francis in New Zealand Journal of Geology and Geophysics
- Vol. 17 (2) , 447-464
- https://doi.org/10.1080/00288306.1974.10430402
Abstract
A Devonian horizon near Reefton yields numerous Nuculoidea vespa n.sp. and Nuculoidea umbra n.sp. The large size range of these fossils allows pericardial and pedal muscle scars to be distinguished during ontogeny. In larger specimens, the pericardial muscles become buttressed by a strong trans-umbonal plate. Both species of Nuculoidea are inequivalve. This character is seen particularly in the placement of the anterior retractor muscle scars of Nuculoidea vespa, and is thought to be related to a life position in which the animal lay on one valve.Keywords
This publication has 3 references indexed in Scilit:
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- The protobranchiate mollusca; a functional interpretation of their structure and evolutionPhilosophical Transactions of the Royal Society of London. B, Biological Sciences, 1939
- A monograph of the Silurian bivalved mollusca of VictoriaMemoirs of the National Museum, Melbourne, 1908