A review of fossil Bursidae and their use for phylogeny calibration Author Sanders, Malcolm T. Author Merle, Didier Author Puillandre, Nicolas text Geodiversitas 2019 2019-03-08 41 5 247 265 journal article 10.5252/geodiversitas2019v41a5 1dd366f3-9e6d-4dcf-a082-408a0ea91bc4 1638-9395 3699932 urn:lsid:zoobank.org:pub:33E8EF32-4BE4-4992-9917-8611CA0AD579 Genus Aquitanobursa n. gen. TYPE SPECIES. — Ranella grateloupi d’Orbigny, 1852 . DERIVATIO NOMINIS. — Derived from Aquitaine ( Aquitania in Latin), the region where most of the species of the genus occur. SPECIES INCLUDED. — Aquitanobursa grateloupi (d’Orbigny, 1852) n. comb. , Aq. amphitrites (Maury, 1917) , n. comb. , Aq. inaequicrenata ( Cossmann & Peyrot, 1924 ) n. comb. , Aq. morrisi ( d’Archiac & Haimes, 1853 ) n. comb. , Aq. tuberosa ( Grateloup, 1833 ) n. comb. DIAGNOSIS. — Shell thick, moderately short-spired, varices slightly displaced, 6 primary cords on the convex part of the whorl, variceal and intervariceal P2 very reduced, axial ridges on the first whorl, parietal callus prominent. Posterior siphonal canal short, well-defined; outer lip with weak projection. COMPARISON. — With their deeply marked and angular varices and strongly expressed shoulder, Aquitanobursa n. gen. species resemble some deep-sea species of the Bursa s.l. genus such as Bursa quirihorai Beu, 1987 ( Fig. 3H ); however, Aquitanobursa n. gen. species are much strongly built, with a thicker shell. Atavistic features displayed by deep-sea gastropods are a well-known phenomenon, described recently for Muricidae by Merle (2012) . The phylogenetic relationships of Aquitanobursa n. gen. with other Bursidae remain unclear; this genus is possibly a sister group to all Recent Bursidae , but that in unlikely considering that it occurs at the same time as Aspa marginata and Bursa corrugata . A fair assumption would be that it is the sister group to all bursids except Aspa and B. corrugata , but that would need a phylogenetic analysis for confirmation. Aquitanobursa grateloupi (d’Orbigny, 1852) n. comb. ( Fig. 7A ) Ranella gratteloupi [sic] d’Orbigny, 1852 : 76. Ranella leucostoma – Grateloup 1833: 91 , pl VI (not Lamarck, 1822). Ranella semigranosa – Grateloup 1845 : pl. XXIX, fig. 6 (not Lamarck, 1822). urn:lsid:zoobank.org:act: 69CEE556-A552-4FB2-AE6A-2FCB4374C21D FIG. 7. — Aquitanobursa n. gen. of Aquitaine Basin: A , Aquitanobursa grateloupi (d’Orbigny, 1852) n. comb. , MNHN.F.A27211, lectotype from the Aquitanian of Saint-Paul-les-Dax, France; B , Aquitanobursa inaequicrenata ( Cossmann & Peyrot,1924 ) n. comb. , MNHN.F. A70284 , Burdigalian of le Peloua, France; Faullummel coll.; C , Aquitanobursa tuberosa ( Grateloup, 1833 ) n. comb. , MNHN.F. A70285 , Burdigalian of le Peloua, Staadt coll. Apollon grateloupi – Cossmann & Peyrot 1924: 305 , pl. XV, figs 42, 43. TYPE LOCALITY. — Lower Miocene of Aquitaine Basin, Bordeaux and Saint-Paul-lès-Dax, France . TYPE MATERIAL. — MNHN.F.A27211 (from Saint-Paullès-Dax) is here designated as lectotype . One paralectotype (MNHN.F.B27595). OTHER MATERIAL EXAMINED. — 13 specimens from Brongniart coll. from le Peloua, Burdigalian. GEOGRAPHIC AND STRATIGRAPHIC OCCURRENCE. — Bursa grateloupi is only known from the lower Miocene of the Aquitaine Basin. REMARKS Aquitanobursa grateloupi n. comb. was originally written gratteloupi . This name is obviously based on that of J.P.S. de Grateloup, and in accord with ICZN 32.5.1 the correct spelling is Aquitanobursa grateloupi n. comb.