Class Gastropoda
Family Muricidae Rafinesque, 1815
Genus Bolinus Pusch, 1837
species Bolinus brandaris torularius (Lamarck, 1822)
Bolinus brandaris torularius Lamarck, 1822 (Mollusca – Gastropoda) is a common species known in all Mediterranean Basin from middle Miocene to upper Pliocene.
Bolinus brandaris torularius Lamarck, 1822 (Mollusca – Gastropoda) è una comune specie diffusa in tutto il Bacino del Mediterraneo, dal Miocene medio alla fine del Pliocene (Piacenziano).
Gastropoda Muricidae Bolinus Bolinus brandaris torularius (Lamarck, 1822)
Original Description / Descrizione Originale:
- testa obovata, anterius ventricosa, crassa, suboctofariam varicosa; varicibus superne bituberculatis; spira depressa, mucronata; cauda longiuscula, tubercolis subspinosi muricata.
Habite…. Fossile du Piémont. Mon cabinet. Coquille épaisse, ventrue et élargie antérieurement comme dans les pyrules, à sept ou huit rangées de varices. Sa spire est très-déprimée, presque mutique, et mucronée au centre. Le dernier tour, qui forme la plus grande partie de la coquille, offre supérieurement deux rangées de grands tubercules bien séparés et fort épais. La queue est un peu allongée, subombiliquée, hérissée de tubercules presque spiniformes. La surface de cette coquille est sillonnée transversalement. Longueur, 2 pouces 9 lignes.
From p. 576, n. 13 in: Lamarck, J.-B. M. de. (1822). Histoire naturelle des animaux sans vertèbres. Tome septième. Paris: published by the Author, 711 pp.
Remarks
The shells of this species are very variable. The fossil shells are more robust, with stronger and larger spines than in the Recent Bolinus brandaris brandaris (L., 1758).
Many of the Pliocene shells illustrated as Murex brandaris corrispond to immature and subadult specimens, which have not yet developed the charactics of Bolinus brandaris torularius, a good exemple of this are the shells figured by Chirli (2000, p. 2, figs 3-9) Landau, Houart & Marques da Silva, 2007, p. 7)
Distribution
To middle Miocene to european Pliocene: common in all the Mediterranean Basin. Some reports for lower Pleistocene, in our opinion, are doubtful. To start to lower Pleistocene the Pliocene sub – species is replaced by the recent bolinus brandaris brandaris (Linnaeus, 1758).
Bibliographic references and some more common synonyms
1822 Murex torularius Lamarck, p. 576.
1832 Murex assimilis – De Cristofori & Jan, p. 11, 35, 24.
1871 Bolinus pseudobrandaris – D’Ancona, p. x, pl. 1, figs 1 a-b, pl. 2, figs 2 a-b, 7 a-b.
1992 Bolinus brandaris torularius – Cavallo & Repetto, p. 84, fig. 182.
2000 Bolinus brandaris – Chirli, p. 5, pl. 2, figs 3-9.
2007 Bolinus brandaris torularius – Landau et al., p. 5, Text fig. 3, pl. 1, figs 3-5.
References
Chirli C. (2000). Malacofauna Pliocenica Toscana vol. 2. Superfamiglia Muricoidea. 143 pp. C. Chirli Ed., Stamperia Legatoria Pisana, Agnano (PI), 143 pp, 49 pls.
D’Ancona C. (1871). Malacologia pliocenica italiana. Memorie per servire alla descrizione della carta Geologica Italiana. Reale Commissione Geologica Italiana, 1: 307-358.
De Cristofori J. & Jan G. (1832). Catalogus in IV. sectiones divisus rerum naturalium in museo exstantium Josephi De Cristofori et Georgii Jan plurium Acad. Scient. et Societ. Nat. Cur. Sodalium complectens adumbrationem oryctognosiae et geognosiae atque prodrumum faunae et floriae Italiae Superioris. Sectio II. – Pars I. – pp. 1-7, (Conchylia) 1-8, (1), (Mantissa) 1-4, (Excerptum) 1-4, (1), (Conchylia fossilia) 1-16, (1-2). Typographia Carmignani. Parmae.
Lamarck, J.-B. M. de. (1822). Histoire naturelle des animaux sans vertèbres. Tome septième. Paris: published by the Author, 711 pp.
Landau B., Houart R. & Da Silva C.M. (2007). The early Pliocene Gastropoda (Mollusca) of Estepona Southern Spain. Part 7: Muricidae. Palaeontos, 11: 1-87.
Pinna G. & Spezia L., 1978. Catalogo dei tipi del Museo Civico di Storia Naturale di Milano. V. I Tipi dei Gasteropodi fossili. Atti della Società Italiana di Scienza Naturali, Museo Civico di Storia naturale di Milano, 119 pp. 69 pls, Tipografia Fusi, Pavia.
Acknowledgements
We thank our friend Massimo Cresti for the execution and use of the photos.
Ringraziamo per l’esecuzione e l’uso delle foto, l’amico Massimo Cresti.