Most of our knowledge of past seawater temperature history is based on δ18O values of calcium carbonate fossil shells. However, the determination of past temperatures using this proxy requires the knowledge of past seawater δ18O values, which is generally poorly constrained. Other paleothermometers using carbonate archives, such as Mg/Ca ratios and clumped isotopes ( 47), have been developed to allow for paleotemperatures to be estimated independently and to allow past ocean δ18O values to be calculated using various groups of calcifying organisms. Articulated brachiopod shells are some of the most commonly used archives in studies of past oceanic geochemistry and temperature. They are abundant in the fossil record since the Cambrian, and for decades, their low Mg–calcite mineralogy has been considered relatively resistant to diagenetic alteration. Here, we investigate the potential of brachiopod shells as recorders of seawater temperatures and seawater δ18O values using new brachiopod shell geochemical data by testing multiple wellestablished or suggested paleothermometers applied to carbonate archives.

CEAMARC-AA, KARUBENTHOS 2, MUSORSTOM 4, NORFOLK 1, SMIB 3, SMIB 6

Since its foundation in 1793, type specimens of 441 asteroid species and subspecies have been deposited in the M­ uséum national d’Histoire naturelle of Paris. The annotated catalogue of all these taxa is drawn up including species whose type material could not be found in the collection. Today the Paris museum houses 1011 asteroid type specimens representing 398 nominal species and subspecies, most of which were described by Lamarck (1816), Müller & Troschel (1842), Perrier (between 1869 and 1896) and Koehler (between 1895 and 1923). Though originating worldwide, species coming from the Atlantic and Indo-West Pacific Oceans, and Antarctic waters are more numerous. A biographical directory of all those involved either in the descriptions of the species or the collection of new material as well as their dedicatee is annexed to the catalogue. Revision of the Paris collection allows to propose taxonomic changes for two species of Müller & Troschel (Echinaster crassus Müller & Troschel, 1842 and Echinaster gracilis Müller & Troschel, 1842 are synonymized with Echinaster purpureus (Gray, 1840)) and five species of Perrier (Asterias borbonica Perrier, 1875 and Echinaster clouei Perrier, 1869 are synonymized with Echinaster purpureus (Gray, 1840), Oreaster clouei Perrier, 1869 and Oreaster mammosus Perrier, 1869 with Protoreaster lincki (Blainville, 1830) and Ophidiaster chinensis Perrier, 1875 with Ophidiaster granifer Lütken, 1871).

BATHUS 1, BATHUS 3, BIOCAL, BIOMAGLO, CEAMARC-AA, Restreint, Restreint, Restreint, EXBODI, HALIPRO 1, LITHIST, MIRIKY, MUSORSTOM 1, MUSORSTOM 2, MUSORSTOM 4, MUSORSTOM 5, MUSORSTOM 6, MUSORSTOM 8, MUSORSTOM 9, NORFOLK 2, SALOMON 2, SANTO 2006, SMIB 4, SMIB 5, SMIB 8, VAUBAN 1978-1979, Walters Shoal

The power and throughput of next-generation sequencing is instigating a major transformation in our understanding of evolution and classification of life on our planet. The new trees of life are robust and comprehensive. Here we provide a landmark phylogeny of the living ophiuroids and use it as the basis for a major revision of the higher classification of this class of marine invertebrates. We used an exoncapture system to generate a 1484 exon (273 kbp) data-matrix from DNA extracted from ethanolpreserved museum samples. We successfully obtained an average of 90% of our target sequence from 576 species spread across the known taxonomic diversity. The topology of the major lineages was robust to taxon sampling, exon-sampling, models and methods. However, estimates of node age were much less precise, varying by about a quarter of mean age. We used a combination of phylogenetic distinctiveness and temporal-banding to guide our revision of the family-level classification. Empirically, we determined that limiting family crown age to 110 ± 10 Ma (mid Cretaceous) selected phylogenetically distinct nodes while minimising disruption to the existing taxonomy. The resulting scheme of 32 families and six orders considerably expands the number of higher taxa. The families are generally longitudinally widespread across the world’s oceans, although 17 are largely confined to temperate and equatorial latitudes and six to relatively shallow water (less than 1000 m depth).

ATIMO VATAE, BICOSE, BIOPAPUA, CEAMARC-AA, EBISCO, MUSORSTOM 7, SALOMON 2, SANTO 2006, TAIWAN 2000

Restreint, ANT-XXIX_3, ATIMO VATAE, BATHUS 2, BATHUS 4, Restreint, Restreint, Restreint, BENTHAUS, Restreint, BIOCAL, Restreint, Restreint, Restreint, BIOGEOCAL, BIOMAGLO, BIOPAPUA, Restreint, CEAMARC-AA, CHALCAL 2, CONCALIS, CORINDON 2, Restreint, Restreint, Restreint, Restreint, EBISCO, EXBODI, HALIPRO 2, Restreint, KANACONO, KANADEEP, KANADEEP 2, KARUBENTHOS 2, KAVIENG 2014, MADEEP, MD42 (SIBEX), MUSORSTOM 1, MUSORSTOM 10, MUSORSTOM 2, MUSORSTOM 4, MUSORSTOM 5, MUSORSTOM 6, MUSORSTOM 7, Restreint, NORFOLK 2, NanHai 2014, Restreint, SALOMON 1, SALOMON 2, SALOMONBOA 3, SPANBIOS, TAIWAN 2000, Restreint, TARASOC, Restreint, Walters Shoal, ZhongSha 2015

Transcriptome-based exon capture methods provide an approach to recover several hundred markers from genomic DNA, allowing for robust phylogenetic estimation at deep timescales. We applied this method to a highly diverse group of venomous marine snails, Conoidea, for which published phylogenetic trees remain mostly unresolved for the deeper nodes. We targeted 850 protein coding genes (678,322 bp) in ca. 120 samples, spanning all (except one) known families of Conoidea and a broad selection of non-Conoidea neogastropods. The capture was successful for most samples, although capture efficiency decreased when DNA libraries were of insufficient quality and/or quantity (dried samples or low starting DNA concentration) and when targeting the most divergent lineages. An average of 75.4% of proteins was recovered, and the resulting tree, reconstructed using both supermatrix (IQ-tree) and supertree (Astral-II, combined with the Weighted Statistical Binning method) approaches, are almost fully supported. A reconstructed fossil-calibrated tree dates the origin of Conoidea to the Lower Cretaceous. We provide descriptions for two new families. The phylogeny revealed in this study provides a robust framework to reinterpret changes in Conoidea anatomy through time. Finally, we used the phylogeny to test the impact of the venom gland and radular type on diversification rates. Our analyses revealed that repeated losses of the venom gland had no effect on diversification rates, while families with a breadth of radula types showed increases in diversification rates, thus suggesting that trophic ecology may have an impact on the evolution of Conoidea.

ATIMO VATAE, AURORA 2007, BIOPAPUA, CEAMARC-AA, CONCALIS, Restreint, DongSha 2014, EXBODI, GUYANE 2014, ILES DU SALUT, INHACA 2011, KARUBENTHOS 2012, KAVIENG 2014, MAINBAZA, NORFOLK 2, NanHai 2014, PANGLAO 2005, PAPUA NIUGINI, Restreint, SALOMONBOA 3, TAIWAN 2013, TERRASSES, Restreint

Fissurellidae are marine gastropods with a worldwide distribution and a rich fossil record. We integrate molecular, geographical and fossil data to reconstruct the fissurellid phylogeny, estimate divergence times and investigate historical routes of oceanic dispersal. With five molecular markers for 143 terminals representing 27 genera, we resolve deep nodes and find that many genera (e.g., Emarginula, Diodora, Fissurella) are not monophyletic and need systematic revision. Several genera classified as Emarginulinae are recovered in Zeidorinae. Future work should prioritize emarginuline genera to improve understanding of ancestral traits and the early evolution of fissurellids. Tree calibration with the fossilized birth-death model indicates that crown fissurellids originated around 175 Ma, and generally resulted in younger ages for the earliest nodes than the node dating approach. Model-based biogeographic reconstruction, supported by fossils, infers an Indo-West Pacific origin, with a westward colonization of new oceans via the Tethys Seaway upon the breakup of Pangea. Western Atlantic clades then served as source for dispersal towards other parts of the globe. As the sister group to all other fissurellids, Rimula is ranked in its own subfamily, Rimulinae stat. nov. New synonyms: Hemitominae syn. nov. of Zeidorinae stat. nov.; Cranopsis syn. nov. of Puncturella; Variegemarginula syn. nov. of Montfortula.

ATIMO VATAE, AURORA 2007, CEAMARC-AA, CONCALIS, EXBODI, GUYANE 2014, INHACA 2011, KARUBENTHOS 2, KARUBENTHOS 2012, PANGLAO 2004, PANGLAO 2005, PAPUA NIUGINI, SALOMON 2, TARASOC

Fissurellidae are marine gastropods with a worldwide distribution and a rich fossil record. We integrate molecular, geographical and fossil data to reconstruct the fissurellid phylogeny, estimate divergence times and investigate historical routes of oceanic dispersal. With five molecular markers for 143 terminals representing 27 genera, we resolve deep nodes and find that many genera (e.g., Emarginula, Diodora, Fissurella) are not monophyletic and need systematic revision. Several genera classified as Emarginulinae are recovered in Zeidorinae. Future work should prioritize emarginuline genera to improve understanding of ancestral traits and the early evolution of fissurellids. Tree calibration with the fossilized birth-death model indicates that crown fissurellids originated around 175 Ma, and generally resulted in younger ages for the earliest nodes than the node dating approach. Model-based biogeographic reconstruction, supported by fossils, infers an Indo-West Pacific origin, with a westward colonization of new oceans via the Tethys Seaway upon the breakup of Pangea. Western Atlantic clades then served as source for dispersal towards other parts of the globe. As the sister group to all other fissurellids, Rimula is ranked in its own subfamily, Rimulinae stat. nov. New synonyms: Hemitominae syn. nov. of Zeidorinae stat. nov.; Cranopsis syn. nov. of Puncturella; Variegemarginula syn. nov. of Montfortula.

ATIMO VATAE, AURORA 2007, CEAMARC-AA, CONCALIS, EXBODI, GUYANE 2014, INHACA 2011, KARUBENTHOS 2, KARUBENTHOS 2012, PANGLAO 2004, PANGLAO 2005, PAPUA NIUGINI, SALOMON 2, TARASOC

In most marine gastropods, the duration of the larval phase is a key feature, strongly influencing species distribution and persistence. Antarctic lineages, in agreement with Thorson's rule, generally show a short pelagic developmental phase (or lack it completely), with very few exceptions. Among them is the ascidian-feeding gastropod family Velutinidae, a quite understudied group. Based on a multilocus (COI, 16S, 28S and ITS2) dataset for 182 specimens collected in Antarctica and other regions worldwide, we investigated the actual Antarctic velutinid diversity, inferred their larval development, tested species genetic connectivity and produced a first phylogenetic framework of the family. We identified 15 Antarctic Molecular Operational Taxonomic Units (MOTUs), some of which represented undescribed species, which show two different types of larval shell, indicating different duration of the Pelagic Larval Phase (PLD). Antarctic velutinids stand as an independent lineage, sister to the rest of the family, with extensive hidden diversity likely produced by rapid radiation. Our phylogenetic framework indicates that this Antarctic flock underwent repeated events of pelagic phase shortening, in agreement with Thorson's rule, yielding species with restricted geographic ranges.

ATIMO VATAE, BIOPAPUA, CEAMARC-AA, PANGLAO 2004, REVOLTA V

Abstract The systematics of the marine mollusc family Velutinidae has long been neglected by taxonomists, mainly because their often internal and fragile shells offer no morphological characters. Velutinids are usually undersampled owing to their cryptic mantle coloration on the solitary, social or colonial ascidians on which they feed and lay eggs. In this study, we address the worldwide diversity and phylogeny of Velutinidae based on the largest molecular dataset (313 specimens) to date, accounting for > 50% of the currently accepted genera, coupled with morphological and ecological data. Velutinids emerge as a diverse group, encompassing four independent subfamily-level lineages, two of which are newly described herein: Marseniopsinae subfam. nov. and Hainotinae subfam. nov. High diversity was found at genus and species levels, with two newly described genera (Variolipallium gen. nov. and Pacifica gen. nov.) and ≥ 86 species in the assayed dataset, 58 of which are new to science (67%). Velutinidae show a remarkable morphological plasticity in shell morphology, mantle extension and chromatic patterns. This variability is likely to be the result of different selective forces, including habitat, depth and trophic interactions.

ATIMO VATAE, BIOMAGLO, BIOPAPUA, CEAMARC-AA, CORSICABENTHOS 1, CORSICABENTHOS 2, CORSICABENTHOS 3, GUYANE 2014, ILES DU SALUT, KANACONO, KANADEEP 2, KARUBENTHOS 2, KAVIENG 2014, KOUMAC 2.1, KOUMAC 2.3, MADEEP, MADIBENTHOS, PANGLAO 2004, PAPUA NIUGINI, SAKIZAYA 2019, SANTO 2006, Tuhaa Pae 2013, ZhongSha 2015

In the course of preparation of a new molecular phylogeny of Conoidea based on exon-capture some new species and species with notable morphology were revealed. The taxonomy of these species is discussed and the radula of most of them illustrated for the first time. New genera are described: Comispira gen. nov. (Cochlespiridae), type species Leucosyrinx mai Li et Li, 2008; Pagodaturris gen. nov. (Clavatulidae), type species Pleurotoma molengraaffi Tesch, 1915. New species described: Comispira compta gen. et sp. nov., Sibogasyrinx sangeri sp. nov. (both Cochlespiridae), Pagodaturris philippinensis gen. et sp. nov. (Clavatulidae), Horaiclavus micans sp. nov., Iwaoa invenusta sp. nov. (both Horaiclavidae), Lucerapex cracens sp. nov., Lucerapex laevicarinatus sp. nov. (Turridae), Heteroturris kanacospira sp. nov. (Borsoniidae). Epideira Hedley, 1918 is reallocated from Pseudomelatomidae to Horaiclavidae. The radulae of Kuroshioturris nipponica (Shuto, 1961) (Turridae), Leucosyrinx verrillii (Dall, 1881), and Leucosyrinx luzonica (Powell, 1969) comb. nov. are illustrated for the first time.

AURORA 2007, BIOPAPUA, CEAMARC-AA, CONCALIS, DongSha 2014, EBISCO, EXBODI, GUYANE 2014, INHACA 2011, KARUBENTHOS 2, MADEEP, NanHai 2014, PANGLAO 2004, PANGLAO 2005, PAPUA NIUGINI, SALOMON 2, SALOMONBOA 3, SANTO 2006, ZhongSha 2015

Abstract The superfamily Buccinoidea is distributed across the oceans of the world from the Arctic Ocean to the Antarctic and from intertidal to abyssal depths. It encompasses 3351 recent species in 337 genera. The latest taxonomic account recognized eight full families. For the first time, the monophyly of the superfamily and the relationships among the families are tested with molecular data supplemented by anatomical and radula data. Five genetic markers were used: fragments of mitochondrial COI, 16S rRNA, 12S rRNA and nuclear Histone 3 (H3) and 28S rRNA genes (for 225 species of 117 genera). Our analysis recovered Buccinoidea monophyletic in Bayesian analyses. The relationships between the formerly recognized families and subfamilies are drastically revised and a new classification of the superfamily is here proposed, now including 20 taxa of family rank and 23 subfamilies. Five new families (Chauvetiidae, Dolicholatiridae, Eosiphonidae, Prodotiidae and Retimohniidae) and one subfamily of Nassariidae (Tomliniinae) are described. Austrosiphonidae and Tudiclidae are resurrected from synonymy and employed in a new taxonomical extension. All but 40 recent genera are reclassified. Our results demonstrate that anatomy is rather uniform within the superfamily. With exceptions, the rather uniform radular morphology alone does not allow the allocation of genera to a particular family without additional molecular data.

ATIMO VATAE, AURORA 2007, BIOPAPUA, BOA1, CEAMARC-AA, CHALCAL 2, CONCALIS, CORSICABENTHOS 1, Restreint, Restreint, DongSha 2014, EBISCO, GUYANE 2014, ILES DU SALUT, INHACA 2011, KANACONO, KARUBENTHOS 2, KARUBENTHOS 2012, KAVALAN 2018, KOUMAC 2.1, KOUMAC 2.3, MADIBENTHOS, MAINBAZA, MIRIKY, MUSORSTOM 4, Restreint, NORFOLK 2, NanHai 2014, PANGLAO 2004, PANGLAO 2005, PAPUA NIUGINI, Restreint, SALOMON 2, SALOMONBOA 3, SANTO 2006, TAIWAN 2000, TAIWAN 2004, TARASOC, TERRASSES, Tuhaa Pae 2013, Restreint, ZhongSha 2015

CEAMARC-AA

CEAMARC-AA, REVOLTA III

In the Southern Hemisphere the species attributed to Corella eumyota, Traustedt, 1882 are likely more varied than previously expected. This ascidian species was described from specimens collected at Valparaiso (Chile). Until now it was considered as a widely distributed species in the southern hemisphere. New collections from Chile and the Antarctic area have allowed to separate two species and re-establish Corella antarctica Sluiter, 1905 as a valid species (Alurralde 2013).A morphological reexamination of many specimens from the MNHN collections and especially recent surveys as CEAMARC and REVOLTA confirms that Antarctic specimens from the Antarctic Peninsula and Terre Adélie obviously differ from sub-Antarctic material more varied than previously estimated. On the other hand, C. eumyota invasive in Europe (Lambert 2004) has been shown to be the same as specimens from Chile, New Zealand and other sub-Antarctic regions. The present morphological study compares Corella from different regions and describes a new species Corella brewinae n. sp that is found living mixed with C. eumyota populations.

CEAMARC-AA, MD42 - (SIBEX), REVOLTA II

It is demonstrated here that Charcotia Chevreux, 1906 (Amphipoda) has priority over Charcotia Vayssière, 1906 (Gastropoda), and that Waldeckia Chevreux, 1906 has to be treated as an invalid objective junior synonym of Charcotia Chevreux, 1906. An analysis of a part of the mitochondrial COI gene of Charcotia indicates that Charcotia obesa sensu lato, consists of two genetically distant clades that fulfil the criteria of genetic species. Each genetic clade corresponds to a different morphotype. The first one has a low triangular protrusion on the dorsal border of urosomite 1, a strong tooth on epimeron 3, and the posterodistal corner of the basis of pereiopod 7 is regularly rounded. It agrees with the original description of Charcotia obesa Chevreux, 1906. The second one has a protrusion of urosomite 1 prolongated by a sharp and usually long denticle, a small tooth on epimeron 3, and the posterodistal corner of the basis of pereiopod 7 is bluntly angular. The second form is treated herein as a new species, Charcotia amundseni sp. nov., which is described in detail. While the bathymetric distribution of the two Antarctic Charcotia species overlaps (0–300 m for C. obesa and 7–1200 m for C. amundseni sp. nov.), C. obesa largely predominates at depths of less than 150 m, while Charcotia amundseni sp. nov. predominates at greater depths. Both species are widely distributed and presumably circum-Antarctic.

CEAMARC-AA, REVOLTA I, REVOLTA II

The Monniot collection of copepods associated with ascidian hosts was built up over several decades of field collecting and taxonomic research on ascidians by Drs Claude & Françoise Monniot (MNHN, Paris). This paper describes a total of 84 new species of copepods collected from ascidian hosts and five new genera are established. Prior to this study the family Ascidicolidae comprised two genera accommodating five valid species; here we add two new genera, Hamistyelicola gen. nov. and Bathycopola gen. nov., and eight new species in total. The family Buproridae comprised a single genus consisting of three species; here we add a new monotypic genus, Buprorides gen. nov. The family Botryllophilidae comprised 68 valid species in seven genera and here we add 45 new species; 13 of Botryllophilus Hesse, 1864, nine of Schizoproctus Aurivillius, 1885, three of Haplostomides Chatton & Harant, 1924, 12 of Haplostoma Chatton & Harant, 1924, seven of Haplostomella Chatton & Harant, 1924 and a single new species of Haplosaccus Chatton & Harant, 1924. The Enteropsidae comprised 42 species in five genera and here we add two new genera, Monnioticopa gen. nov. and Periboia gen. nov., plus a total of 30 new species; 15 of Enterocola van Beneden, 1860, two of Enterocolides Chatton & Harant, 1922, five of Enteropsis C.W.S. Aurivillius, 1885, five of Monnioticopa gen. nov., two of Mychophilus Hesse, 1865, plus the type species of Periboia gen. nov. Generic diagnoses are provided for all genera represented in the collection. A further 13 known species are also reported and brief supplementary descriptive notes or full redescriptions are provided, as appropriate.

ATIMO VATAE, BORDAU 1, CEAMARC-AA, CHALCAL 2, CORAIL 2, GUYANE 2014, KARUBAR, LAGON, MUSORSTOM 3, MUSORSTOM 8, SMIB 4

Two new species of the hitherto monotypic family Intramolgidae are described, both are placed in the type genus Intramolgus Marchenkov & Boxshall, 1995. Intramolgus heardensis sp. nov. was found in association with Polyzoa opuntia Lesson, 1830, and the host of I. atlantis sp. nov. was Styela chaini Monniot C. & Monniot F., 1970. Eleven new species belonging to the family Lichomolgidae are reported. These include four new monotypic genera: Antarctomolgus gen. nov. accommodates A. molgulae gen. et sp. nov. from Molgula pedunculata (Herdman, 1881), Didemnomolgus gen. nov. accommodates D. crenulatus gen. et sp. nov. from Didemnum molle (Herdmann, 1886), Spheromolgus gen. nov. accommodates S. rarus gen. et sp. nov. from Diplosoma simile (Sluiter, 1909), and Alupa gen. nov. accommodates A. geminata gen. et sp. nov. from Leptoclinides madara Tokioka, 1953. The remaining new species are: Debruma deplanata sp. nov. from Ascidia ornata Monniot F. & Monniot C., 2001, Lichomolgidium bipartitum sp. nov. from Pyura stolonifera (Heller, 1878), Lichomolgus papuensis sp. nov. from Rhopalaea circula Monniot F. & Monniot C., 2001, L. brevicaudatus sp. nov. from an unidentified species of Polycarpa Heller, 1877, L. alatus sp. nov. from Synoicum castellatum Kott, 1992, L. lepidotus sp. nov. from Aplidium altarium (Sluiter, 1909), and Lobomolgus foveolatus sp. nov. from Didemnum molle (Herdmann, 1886). In addition, redescriptions are provided for Henicoxiphium redactum Illg & Humes, 1971, Lichomolgidium sardum Kossmann, 1877, Lichomolgus canui Sars, 1917, L. forficula Thorell, 1860, and Zygomolgus dentatus Kim I.H., 2006.

CEAMARC-AA, MADIBENTHOS, PAPUA NIUGINI

The phylogeny of sea spiders has been debated for more than a century. Despite several molecular studies in the last twenty years, interfamilial relationships remain uncertain. In the present study, relationships within Pyc­ nogonida are examined in the light of a new dataset composed of 160 mitochondrial genomes (including 152 new sequences) and 130 18S rRNA gene sequences (including 120 new sequences), from 141 sea spider mor­ phospecies representing 26 genera and 9 families. Node congruence between mitochondrial and nuclear markers was analysed to identify the most reliable relationships. We also reanalysed a multilocus dataset previously published and showed that the high percentages of missing data make phylogenetic conclusions difficult and uncertain.

ATIMO VATAE, BICOSE, BIOCAL, BIOMAGLO, BIOPAPUA, CEAMARC-AA, EXBODI, GUYANE 2014, ILES DU SALUT, KANACONO, KANADEEP, KARUBENTHOS 2012, KAVIENG 2014, MADIBENTHOS, MAINBAZA, MIRIKY, MONTROUZIER, MUSORSTOM 4, MUSORSTOM 8, PAPUA NIUGINI, SALOMONBOA 3, TARASOC, Walters Shoal

CEAMARC-AA