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|Title:||A new crustacean from the Herefordshire (Silurian) Lagerstätte, UK, and its significance in malacostracan evolution|
|Authors:||Siveter, David J.|
Briggs, Derek E. G.
Siveter, Derek J.
Sutton, Mark D.
|Publisher:||Royal Society, The|
|Citation:||Proceedings of the Royal Society B: Biological Sciences, 2017, 284 (1851), pp. 20170279-20170279|
|Abstract:||Cascolus ravitis gen. et sp. nov. is a three-dimensionally preserved fossil crustacean with soft parts from the Herefordshire (Silurian) Lagerstätte, UK. It is characterized by a head with a head shield and five limb pairs, and a thorax (pereon) with nine appendage-bearing segments followed by an apodous abdomen (pleon). All the appendages except the first are biramous and have a gnathobase. The post-mandibular appendages are similar one to another, and bear petal-shaped epipods that probably functioned as a part of the respiratory–circulatory system. Cladistic analysis resolves the new taxon as a stem-group leptostracan (Malacostraca). This well-preserved arthropod provides novel insights into the evolution of appendage morphology, tagmosis and the possible respiratory–circulatory physiology of a basal malacostracan.|
|Rights:||Copyright © the authors, 2017. This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.|
|Description:||Electronic supplementary material is available online at https://dx.doi.org/10.6084/m9.figshare.c.3721774.|
|Appears in Collections:||Published Articles, Dept. of Geology|
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