Christian Gaillard

Centre National de la Recherche Scientifique

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Paul Bernier

Université de Moncton

Jean‐Paul Bourseau

Université Claude Bernard Lyon 1

ÉB

Éric Buffetaut

Laboratoire de Géologie de l’École Normale Supérieure

Georges Barale

Université Claude Bernard Lyon 1

Jean‐Claude Gall

Université de Strasbourg

Sylvie Wenz

Muséum national d'Histoire naturelle

Pierre Hantzpergue

Centre National de la Recherche Scientifique

Davide Olivero

Université Claude Bernard Lyon 1

Pierre Cotillon

Université Claude Bernard Lyon 1

Winfried Werner

Bayerische Staatssammlung für Paläontologie und Geologie

Cooperative Institutions

Centre National de la Recherche Scientifique

Université Claude Bernard Lyon 1

Laboratoire de Géologie de Lyon : Terre, Planètes et Environnement

Institute of Paleoprimatology Human Paleontology Evolution and Paleoenvironments

Institut des Sciences de la Terre

Laboratoire de Sciences de la Terre

Université de Lorraine

Muséum national d'Histoire naturelle

Sorbonne Université

École Nationale Supérieure des Mines de Nancy

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Tithonia oxfordiana, a new irregular echinoid associated with Jurassic seep deposits in south‐east France

Palaeontology (2011)

Christian Gaillard Didier Néraudeau Jacques Thierry

Abstract: The infaunal irregular echinoid, Tithonia oxfordiana , is described and compared to congeneric species previously described from Upper Jurassic and lowermost Cretaceous strata. This new species characterizes a monospecific echinoid assemblage, which occurs only in some places where deep‐marine middle Oxfordian deposits are exposed in south‐east France. Specimens are closely packed and clearly concentrated at the top of small carbonate chemoherms; a close connection of the echinoids with the emission of reduced chemicals, which were oxidized by chemoautotrophic bacteria, is highly probable. Based on general test shape and plate architecture, T. oxfordiana probably was a deposit feeder on chemosynthetic organic matter produced by such bacteria. In view of the fact that T. oxfordiana is the sole species of the Jurassic genus Tithonia known from Oxfordian strata, it is postulated that chemoherms possibly acted as refugia for these peculiar echinoids, which have an episodic record between the Callovian and Valanginian.

Chemosynthesis

Tithonia

Petroleum seep

Cold seep

10.1111/j.1475-4983.2011.01059.x

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Citations (18)

A History of Ideas in Ichnology

Developments in sedimentology (2012)

Andrea Baucon Emese M. Bordy Titus Brustur Luís A. Buatois Tyron Cunningham

Ichnology

10.1016/b978-0-444-53813-0.00001-0