Taxonomic Implications of the Residual Colour Patterns of Ampullinid Gastropods and Their Contribution to the Discrimination from Naticids

Caze, Bruno; Merle, Didier; Meur, Mathieu Le; Pacaud, Jean-Michel; Ledon, Daniel; Martin, Jean‐Paul Saint

doi:10.4202/app.2009.0084

Cited by 20 publications

(17 citation statements)

References 14 publications

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“…They are dominant in onshore habitats during the Eocene but are absent in the Plio-Pleistocene of the northeast Atlantic and Mediterranean. Ampullinidae are presently represented by a single species occurring in the Philippines [47], and Batillariidae disappeared from the northeast Atlantic Province at the end of the Miocene [48]. In onshore habitats, Potamididae are strongly reduced, whereas Rissoidae, Pyramidellidae, Arcidae, Semelidae, Tellinidae, Cardiidae and Veneridae increase in abundance.…”

Section: Resultsmentioning

confidence: 99%

Onshore–offshore gradient in metacommunity turnover emerges only over macroevolutionary time-scales

et al. 2014

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Invertebrate lineages tend to originate and become extinct at a higher rate in onshore than in offshore habitats over long temporal durations (more than 10 Myr), but it remains unclear whether this pattern scales down to durations of stages (less than 5 Myr) or even sequences (less than 0.5 Myr). We assess whether onshore-offshore gradients in long-term turnover between the tropical Eocene and the warm-temperate Plio-Pleistocene can be extrapolated from gradients in short-term turnover, using abundances of molluscan species from bulk samples in the northeast Atlantic Province. We find that temporal turnover of metacommunities does not significantly decline with depth over short durations (less than 5 Myr), but significantly declines with depth between the Eocene and Plio-Pleistocene (approx. 50 Myr). This decline is determined by a higher onshore extinction of Eocene genera and families, by a higher onshore variability in abundances of genera and families, and by an onshore expansion of genera and families that were frequent offshore in the Eocene. Onshore-offshore decline in turnover thus emerges only over long temporal durations. We suggest that this emergence is triggered by abrupt and spatially extensive climatic or oceanographic perturbations that occurred between the Eocene and Plio-Pleistocene. Plio-Pleistocene metacommunities show a high proportion of bathymetric generalists, in contrast to Eocene metacommunities. Accordingly, the net cooling and weaker thermal gradients may have allowed offshore specialists to expand into onshore habitats and maintain their presence in offshore habitats.

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Section: Resultsmentioning

confidence: 99%

Onshore–offshore gradient in metacommunity turnover emerges only over macroevolutionary time-scales

et al. 2014

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“…Some cryptic species were identifi ed using the methodology of Caze et al (2010Caze et al ( , 2011 by revealing the residual colour patterns under UV light (λ = 3600 Å) (Fig. 4).…”

Section: Species Identificationmentioning

confidence: 99%

The molluscs of the “Falunière” of Grignon (Middle Lutetian, Yvelines, France): quantification of lithification bias and its impact on the biodiversity assessment of the Middle Eocene of Western Europe

2015

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“…Unfortunately, however, the poor preservation of the studied specimens does not allow further assessment. The outline of the adapical part of the last whorl of the studied fossil shells is angular, like in Ampullina Bowdich, 1822, a genus in which 41 Paleogene species have been described (see Caze et al 2011), and, in a lesser extent, like in Crommium Cossmann, 1888, which includes six exclusively Paleogene species. In Globularia Swainson, 1840 (Danian-Recent) the adapical shape of the whorls is generally more rounded.…”

Section: Descriptionmentioning

confidence: 92%

Gastropods and bivalves from the Eocene marly formations of the Pamplona Basin and surrounding areas (Navarre, western Pyrenees)

Astibia¹,

Merle²,

Pacaud³

et al. 2018

Geodiversitas

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Gastropods and bivalve associations from the middle and ?upper Eocene (Bartonian and ?Priabonian) sedimentary succession of the Pamplona Basin are described. This succession was accumulated in the western part of the South Pyrenean peripheral foreland basin and extends from deep marine turbiditic (Ezkaba Sandstone Formation) to deltaic (Pamplona Marl, Ardanatz Sandstone and Ilundain Marl formations) and marginal marine deposits (Gendulain Formation). Fossils are generally fragmentary and many correspond to remains that have undergone taphonomic reworking. Significant effects of diagenesis are also detected, with evidence of compression or deformation, dissolution, aragonitecalcite neomorfism and cementation by celestite. Bioerosion traces and fossil encrusters are common. Fossils of 37 taxa, 25 gastropods and 12 bivalves, have been identified confidently. The number of species is probably considerably higher, as the study of some fossils, mainly the most small-sized GEODIVERSITAS • 2018 • 40 (11) Astibia H. et al. MOTS CLÉS Gastéropodes, bivalves, Paléogène, sédiments marins peu profonds, Pyrénées, combinaisons nouvelles, espèce nouvelle. species, is pending. One new species, Athleta (Volutospina) delvallei Astibia, Merle & Pacaud, n. sp. (Gastropoda, Volutidae), is described herein. Fossil assemblages are comparable to those from the Eocene of the Basque Coast (North Pyrenean area) and Aragon and Catalonia (west-central and eastern part of South Pyrenean area). Most of the mollusc taxa seem to be endemic to the Pyrenean area, but several Tethyan and Northern elements have also been recorded. These results enlarge the database for a better understanding of the evolution of global marine biodiversity throughout the Eocene. RÉSUMÉ Gastéropodes et bivalves des formations marneuses de l'Éocène du Bassin de Pampelune et de ses environs (Navarre, Pyrénées occidentales). Les associations de gastéropodes et de bivalves de la succession sédimentaire de l'Éocène moyen et ?supérieur (Bartonien et ?Priabonien) du Bassin de Pampelune sont décrites. Cette succession s'est accumulée dans la partie occidentale du bassin d'avant-pays périphérique sud-pyrénéen et comprend des dépôts marins turbiditiques profonds (Formation des Grès d'Ezkaba) des dépôts deltaïques (formations des Marnes de Pampelune, des Grès d'Ardanatz et des Marnes d'Ilundain) et des dépôts marins marginaux (Formation Gendulain). Les fossiles sont généralement fragmentaires et beaucoup d'entre eux correspondent à des restes remaniés. Des effets significatifs de la diagénèse sont également détectés, avec des signes de compression ou de déformation, de dissolution, de néomorphisme aragonite-calcite et de cimentation par célestine. Les traces de bioérosion et les fossiles d'organismes incrustants sont fréquents. Les restes fossiles de 37 espèces, dont 25 correspondant à des gastéropodes et 12 à des bivalves, ont été identifiés. Ce nombre pourrait être considérablement plus élevé, grâce à l'étude de très petites espèces (micro-mollusques) qui reste à faire. Une nouve...

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Taxonomic Implications of the Residual Colour Patterns of Ampullinid Gastropods and Their Contribution to the Discrimination from Naticids

Abstract: and Ampullospira) and three subgenera (Globularia, Deshayesia, and Cernina within the genus Globularia). Forty−six Cainozoic species revealed residual colour patterns and 29 of them, belonging to six genera (Ampullina, Globularia, Crommium, Amaurellina, Pachycrommium, Amauropsina)

Cited by 20 publications

References 14 publications

Onshore–offshore gradient in metacommunity turnover emerges only over macroevolutionary time-scales

Onshore–offshore gradient in metacommunity turnover emerges only over macroevolutionary time-scales

The molluscs of the “Falunière” of Grignon (Middle Lutetian, Yvelines, France): quantification of lithification bias and its impact on the biodiversity assessment of the Middle Eocene of Western Europe

Gastropods and bivalves from the Eocene marly formations of the Pamplona Basin and surrounding areas (Navarre, western Pyrenees)

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