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| Content Provider | Springer Nature Link |
|---|---|
| Author | Thuy, Ben Marty, Daniel Comment, Gaël |
| Copyright Year | 2013 |
| Abstract | Although much effort has been put into attempts to unravel the Mesozoic ophiuroid fossil record, surprisingly little attention has been paid to the geological history of family-level compositions of brittle star assemblages. Here, we describe new ophiuroid material from the Late Oxfordian Bure Member as exposed in a construction site along the federal Highway A16 (Transjurane Highway) near Boncourt–Queue au Loup (Swiss Jura Mountains). The remains are exceptionally well preserved and partially articulated, enabling detailed morphological observations at a level comparable to Recent material. Three species are identified; they are here shown to display unequivocal affinities with extant ophiuroid lineages. The assemblage comprises a new ophiacanthid genus and species, Juracantha hottingeri, which is closely related to extant Ophientrema, an ophiolepidid close to extant Ophiozonella described here as a new genus and species, Eozonella bergeri, and a species previously described as Ophiacantha? francojurassica, which is here reassigned to the extant ophionereidid genus Ophiodoris. The assemblage was found in association with Nanogyra oyster buildups encrusted by serpulids and associated with partially-articulated crinoids, deposited in a shallow subtidal setting. Its family level composition is highly unusual with respect to modern equivalents, and instead is reminiscent of modern bathyal assemblages. |
| Starting Page | 409 |
| Ending Page | 426 |
| Page Count | 18 |
| File Format | |
| ISSN | 16618726 |
| Journal | Swiss Journal of Geosciences |
| Volume Number | 106 |
| Issue Number | 2 |
| e-ISSN | 16618734 |
| Language | English |
| Publisher | Springer Basel |
| Publisher Date | 2013-07-11 |
| Publisher Place | Basel |
| Access Restriction | Subscribed |
| Subject Keyword | Oxfordian Carbonate platform Echinodermata Ophiuroidea Palaeoecology Geology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Geology |
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