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Three new Hymedesmia Bowerbank, 1864 (Demospongiae, Poecilosclerida, Hymedesmiidae) from the Southeast Pacific (Peru and Chile)
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RBINS Staff Publications 2022
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The Muricidae (Gastropoda) described from Mauritius by Tapparone Canefri in 1881
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RBINS Staff Publications 2021
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Evolutionary history of the calcareous sponge Clathrina aurea: genetic connectivity in the Western Atlantic and intriguing occurrence in the Eastern Pacific
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RBINS Staff Publications 2021
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Phylogenomics of African radiation of Praomyini (Muridae: Murinae) rodents: first fully resolved phylogeny, evolutionary history and delimitation of extant genera
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RBINS Staff Publications 2021
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Echoes of Evolution in Holocentridae: Harmony Between Phylogeny, Morphology and Acoustics
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ABSTRACT Holocentridae are nocturnal reef fishes that rely on acoustic communication in various behavioral contexts. Using a multidisciplinary approach combining phylogenetics, morphology, and acoustic data from 53 species, we reconstructed the evolutionary history of this communication system within the family. Our results reveal two main clades corresponding to the subfamilies Myripristinae and Holocentrinae, with congruent differences in both the morphology of the sound-producing apparatus and acoustic features. Interestingly, at finer taxonomic scales, closely related species often share similar sound-producing structures but can produce distinct sounds. This suggests that the evolution of acoustic communication in Holocentridae follows a three-step diversification pattern: (1) the emergence of structures enabling sound production; (2) differentiation of sound-producing mechanisms within each subfamily, likely constrained by internal factors such as the swim bladder morphology; and (3) further diversification through differentiated use of conserved mechanisms, consistent with a role of neurophysiological modulation. This scenario mirrors patterns observed in other functional traits, where morphological innovations open new functional pathways, followed by fine-scale diversification based on the flexible exploitation of similar structures. It provides one of the first evolutionary reconstructions of sound production mechanisms in fishes, expanding our understanding of the evolution of complex signaling systems.
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RBINS Staff Publications 2026
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Paléobiologie et paléobiogéographie des amphibiens et reptiles : un hommage à Jean-Claude Rage – 2e partie
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Editorial for the special volume in honour of Jean-Claude Rage.
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RBINS Staff Publications 2023
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Niche partitioning in the odontocete fauna from the Early Miocene Chilcatay Formation of Peru
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RBINS Staff Publications 2025
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Description of a new species of the genus Anomophysis Quentin & Villiers, 1981 from Wetar Island (Contribution to the knowledge of Indonesian Prioninae-2) (Coleoptera, Cerambycidae, Prioninae)
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RBINS Staff Publications 2024
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New postcranial elements of mesonychid mammals from the Ypresian of France: New hypotheses for the radiation and evolution of the mesonychids in Europe
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New postcranial elements of two mesonychids that lived during the Ypresian (early Eocene) in Europe are here described. The postcranial bones found at La Borie (France; ≈MP8 + 9) can be confidently ascribed to Hyaenodictis raslanloubatieri, while the astragalus found at Palette (France; ≈MP7) probably represents H. rougierae. Our study demonstrates that H. raslanloubatieri and H. rougierae were digitigrade in posture and relatively cursorial in locomotion. A single lumbar vertebra was recovered at La Borie and referred to H. raslanloubatieri; this element suggests this species was a moderately dorsostable predator. In addition, we illustrate the first maxillary fragment referable to H. raslanloubatieri, also discovered at La Borie. In comparison, we describe the postcranial elements of Pachyaena gigantea partially published in the early twentieth century, probably a plantigrade predator species. Morphological data derived from the La Borie specimens were included in phylogenetic analyses and support the reinstatement and monophyly of Hyaenodictis. Hyaenodictis was considered to be a junior synonym of Dissacus, but here we find that the Hyaenodictis clade includes almost all European mesonychids formerly referred to Dissacus along with the North American Wasatchian species H. willwoodensis.
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RBINS Staff Publications 2023 OA
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The Spy VI child: a newly discovered Neandertal infant.
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Spy cave (Jemeppe-sur-Sambre, Belgium) is reputed for the two adult Neandertal individuals discovered in situ in 1886. Recent reassessment of the Spy collections has allowed direct radiocarbon dating of these individuals. The sorting of all of the faunal collections has also led to the discovery of the remains of a Neandertal child, Spy VI. This individual is represented by two mandibular corpus fragments. The left fragment is the most complete and both sides preserve the mental foramen. Four deciduous teeth are associated with these mandibular remains: three incisors and one canine. The lower left canine (Spy 645a) conjoins with the corresponding alveolar socket in the left part of the mandible. Following extant standards, the developmental stage of the preserved teeth indicate an age at death of about one and a half years. In addition to performing a classical morphometric comparative study of the mandible and teeth,we have evaluated the dental tissue proportions using high-resolution microtomographic techniques. Our results show that Spy VI generally falls withinthe Neandertal range of variation. However, this specimen also exhibits particular traits, notably in the dental internal structural organization, whichreveals that variation in the immature Neandertal variation is larger than what was variation currently represented by the available fossil record. These observations demonstrate the need for investigating the frequency and expressionof immature Neandertal traits in fossil anterior teeth, as well as their temporal and geographic variation. Direct radiocarbon dating of the Spy VI specimen has been conducted in two different laboratories. The results of Spy VI confirm the age previously determined for the two adults, making the Spy Neandertal remains the youngest ever directly dated in northwest Europe.
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RBINS Staff Publications