Abstract
Two new species of spiny barnacles (Balanoidea: Acastinae, Balaninae) are described from the lower Burdigalian (Early Miocene) of the Aquitaine Basin, southwest France. The first, Acasta martillacensis sp. nov., from Martillac, is characterised by a shell with internal longitudinal ribs, a cellular space between the sheath and wall, a carinal sheath which adheres to the wall in the centre of its basal edge, a cup-shaped basis and a scutum with radial striae externally and a less than prominent adductor ridge internally. The second, Balanus aculeatus sp. nov., from Saucats (Le Péloua), has paries exteriorly with strong, tubular spines. An overview of outcrops of Burdigalian strata in the area, within a palaeogeographic context, is added.
References
Cahuzac, B. & Chaix, C. (1996) Structural and faunal evolution of Chattian-Miocene reefs and corals in western France and northeastern Atlantic Ocean. In: Franseen, E., Esteban, M., Ward, W. & Rouchy, J.-M. (Eds), Models for carbonate stratigraphy from Miocene reefs complexes of the Mediterranean regions. Society of Economic Paleontologists and Mineralogists (S.E.P.M.), Tulsa, Concepts in Sedimentology and Paleontology, 5, 105–127.
Cahuzac, B. & Poignant, A. (1997) Essai de biozonation de l'Oligo-Miocène dans les bassins européens à l'aide des grands foraminifères néritiques. Bulletin de la Société géologique de France, Paris, 168 (2), 155–169.
Cahuzac, B. & Poignant, A. (2005) Sur les foraminifères benthiques de la base du Burdigalien dans les "Sables à Mactres" de Martillac (Gironde, SO France). Annales de Paléontologie, 91(1), 5–31.
Cahuzac, B., Turpin, L. & Bonhomme, P. (1997) Sr isotope record in the area of the Lower Miocene historical stratotypes of the Aquitaine Basin (France). In: Montanari, A., Odin, G.S. & Coccioni, R. (Eds), Miocene stratigraphy: an integrated approach [Developments in Paleontology and Stratigraphy, 15]. Elsevier, Amsterdam, pp 33–56.
Carriol, R.-P. (2000) A new genus and a new species of Concavinae (Cirripedia, Thoracica) from the Serravallian of Mios (Gironde, France). Neues Jahrbuch für Geologie und Paläontologie, Monatshefte, 2000(2), 122–128.
Carriol, R.-P. (2008) New genus and new species of Cirripedia (Chthamalidae, Tetraclitidae, Archaeobalanidae and Balanidae) from the Middle Miocene of the faluns of Touraine (France). Zootaxa, 1675, 31–48.
Carriol, R.-P. & Cahuzac, B. (2001) Concavinae (Cirripedia, Thoracica) from Lower and Middle Miocene of the Aquitaine Basin (France), with the description of a new genus and a new species. Neues Jahrbuch für Geologie und Paläontologie, Monatshefte, 2001(3), 157–167.
Cossmann, M. & Peyrot, A. (1924) Conchologie néogénique de l'Aquitaine. Actes de la Société Linnéenne de Bordeaux, 75(3), 193–318.
Da Costa, E. (1778) Historia naturalis testaceorum Britanniae, or the British conchology; Containing the Description and Other Particulars of Natural History of the Shells of Great Britain and Ireland. Printed for the Author, Millan, B. White, Elmsley and Robson, London, 254 pp.
Darwin, C. (1854) A monograph on the sub-class Cirripedia, with figures of all the species. The Balanidae, (or sessile Cirripedes); the Verrucidae. The Ray Society, London, pp viii + 684.
Gradstein, F.M., Ogg, J.G. & Smith, A.G. (ed.) (2004) A Geologic Time Scale 2004. Cambridge University Press, 500 p.
Kolbasov, G.A. (1993) Revision of the genus Acasta Leach (Cirripedia: Balanoidea). Zoological Journal of the Linnean Society, 109, 395–427.
Lamarck, J.-B.P.A. de Monet, Chevalier de (1818) Histoire naturelle des animaux sans vertèbres, présentant les caractères généraux et particuliers de ces animaux, leur distribution, leurs classes, leurs familles, leurs genres, et la citation des principales espèces qui s’y rapportent; précédée d’une introduction offrant la détermination des caractères essentiels de l’animal, sa distinction du végétal et des autres corps naturels; enfin, l’exposition des principes fondamentaux de la zoologie, 5, iii + 612 pp. Déterville & J.-P. Verdière, Paris.
Leach, W.E. (1817) Distribution systématique de la classe des Cirripèdes. Journal de Physique, de Chimie et d’Histoire Naturelle élémentaire, 85, 67–69.
Lesport, J.-F. & Cahuzac, B. (2005) Découverte des sables à Mactres de la base du Burdigalien à Martillac (Nord Aquitaine; SW France); données paléontologiques. Annales de Paléontologie, 91(1), 73–116.
Linnaeus, C. (1758) Systema Naturae per regna tria naturæ, secundum classses, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Editio decima, reformata, 1, 824 pp., Holmiae, Impensis direct. Laurentii Salvii (Salvius publ.).
Newman, W.A. & Ross, A. (1976) Revision of the balanomorph barnacles; including a catalog of the species. San Diego Society of Natural History, Memoir, 9, 1–108.
Parize, O., Mulder, T., Cahuzac, B., Fiet, N., Londeix, L. & Rubino, J.-L. (2008) Sedimentology and sequence stratigraphy of Aquitanian and Burdigalian stratotypes in the Bordeaux area (southwestern France). Comptes Rendus Géoscience, 340(6), 390–399.
Pilsbry, H.A. (1916) The sessile barnacles (Cirripedia) contained in the collections of the U.S. National Museum; including a monograph of the American species. Bulletin of the United States National Museum, 93, xi +366 pp.
Poli, G.S. (1791–1795) Testacea Utriusque Siciliae eorumque historia et anatome tabulis aeneis illustrata a Iosepho Xaverio Poli francisci I.P.F.A. Siciliarum et Hierusalem regis instutore. 2: 75–264., Parma,Regio.
Schneider, S., Berning, B., Bitner, M. A., Carriol, R.-P., Jäger, M., Kriwet, J., Kroh, A. & Werner, W. (2009) A parautochthonous shallow marine fauna from the Late Burdigalian (early Ottnangian) of Gurlarn (Lower Bavaria, SE Germany): Macrofaunal inventory and paleoecology. Neues Jahrbuch für Geologie und Paläontologie Abhandlungen, 254, 63–103.
Steininger, F.F., Aubry, M.-P., Biolzi, M., Borsetti, A.M., Cati, F., Corfield, R., Gelati, R., Iaccarino, S., Napoleone, C., Rögl, F., Roetzel, R., Spezzaferri, S., Tateo, F., Villa, G. & Zevenboom, D. (1997) Proposal for the Global Stratotype Section and Point (GSSP) for the base of the Neogene (the Palaeogene/Neogene boundary). In: Montanari, A., Odin, G.S. & Coccioni, R. (eds): Miocene Stratigraphy: an Integrated Approach. Developments in Paleontology and Stratigraphy 15, chapter A 9, pp 125–147, Elsevier.