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A new paracomatulid crinoid, Tiburtocrinus toarcensis gen. et sp. nov., is described from the Lower Jurassic of Tivoli (central Apennines, Italy). This type of stemless crinoids has never previously been recorded in Italy, and this report bridges a significant gap. Morphofunctional analysis of the radial facets suggests that Tiburtocrinus toarcensis gen. et sp. nov. may have been a crawling paracomatulid, very different from other paracomatulids that probably swam.

A possible crawling paracomatulid crinoid from the Lower Jurassic of central Italy / Manni, Riccardo; Di Nardo, Rolando. - In: CARNETS DE GÉOLOGIE. - ISSN 1634-0744. - 21:19(2021), pp. 523-532. [10.2110/carnets.2021.2119]

A possible crawling paracomatulid crinoid from the Lower Jurassic of central Italy

Manni, Riccardo
;
2021

Abstract

A new paracomatulid crinoid, Tiburtocrinus toarcensis gen. et sp. nov., is described from the Lower Jurassic of Tivoli (central Apennines, Italy). This type of stemless crinoids has never previously been recorded in Italy, and this report bridges a significant gap. Morphofunctional analysis of the radial facets suggests that Tiburtocrinus toarcensis gen. et sp. nov. may have been a crawling paracomatulid, very different from other paracomatulids that probably swam.
2021
Un crinoïde paracomatulide probablement rampant du Jurassique inférieur d'Italie centrale - Un nouveau crinoïde paracomatulide, Tiburtocrinus toarcensis gen. et sp. nov., est décrit dans le Jurassique inférieure de Tivoli (Apennins centraux, Italie). Jamais signalée jusqu'à present en Italie, cette découverte comble une lacune au sein des descriptions de ce type de crinoïde sans tige. L'analyse morphofonctionnelle de ses facettes radiales montre que Tiburtocrinus toarcensis gen. et sp. nov. était probablement un paracomatulide rampant, très différent des autres paracomatulides connus qui, eux, nageaient selon toute probabilité.
echinoderm; crinoidea; isocrinida; paracomatulidae; lower jurassic; toarcian; central apennines; morphofunctional analysis
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A possible crawling paracomatulid crinoid from the Lower Jurassic of central Italy / Manni, Riccardo; Di Nardo, Rolando. - In: CARNETS DE GÉOLOGIE. - ISSN 1634-0744. - 21:19(2021), pp. 523-532. [10.2110/carnets.2021.2119]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1602101
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