Publication Date:
2009-02-07
Description:
Great-appendage arthropods, characterized by a highly modified anterior limb, were previously unknown after the Middle Cambrian. One fossil from the Lower Devonian Hunsruck Slate, Germany, extends the stratigraphic range of these arthropods by approximately 100 million years. Schinderhannes bartelsi shows an unusual combination of anomalocaridid and euarthropod characters, including a highly specialized swimming appendage. A cladistic analysis indicates that the new taxon is basal to crown-group euarthropods and that the great-appendage arthropods are paraphyletic. This new fossil shows that features of the anomalocaridids, including the multisegmented raptorial appendage and circular plated mouth, persisted long after the initial radiation of the euarthropods.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kuhl, Gabriele -- Briggs, Derek E G -- Rust, Jes -- New York, N.Y. -- Science. 2009 Feb 6;323(5915):771-3. doi: 10.1126/science.1166586.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Palaeontology, Steinmann Institute, University of Bonn, Nussallee 8, 53115 Bonn, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19197061" target="_blank"〉PubMed〈/a〉
Keywords:
Animals
;
Arthropods/*anatomy & histology/*classification
;
Extremities/anatomy & histology
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*Fossils
;
Germany
;
Mouth/anatomy & histology
;
Phylogeny
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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