Malletiidae H. Adams

• Main Authors: Hryniewicz, Krzysztof, Little, Crispin T. S., Nakrem, Hans Arne
• Format: Text
• Language: unknown
• Published: Zenodo 2014
• Subjects: Biodiversity; Taxonomy; Animalia; Mollusca; Bivalvia; Nuculanoida; Malletiidae; Svalbard; Greenland; Russland; Jura; Forbes; Duff; Leda; Stonehouse; Milne Land; East Greenland; Spitsbergen
• Online Access: https://dx.doi.org/10.5281/zenodo.5228276; https://zenodo.org/record/5228276

Family Malletiidae H. Adams & A. Adams, 1858 Genus Mesosaccella Chavan, 1946 Type species. Nucula foersteri Müller, 1847 Remarks. The genus Mesosaccella is probably a bucket taxon, as it contains species with a wide range of external morphological features. This diversity is encapsulated into three morphogroups. The first comprises roughly oval, variably elongated and non-carinate species with ornament composed only of growth lines, including M. elliptica (Goldfuss, 1837) from the Rhaetian–Pliensbachian of Europe (Palmer 1973; Hodges 2000), M . morrisi (Deshayes, 1853) from the Callovian of England and France (Duff 1978) and M. choroschovensis (Borissjak, 1904) from the Volgian of Russia and Greenland (Borissjak 1904; Fürsich 1982). The second Mesosaccella morphogroup comprises elongated species with slightly pointed posteriors, external ornament of growth lines, with or without weak commarginal ridges, and growth line deflections on the posterior parts of the shell. This group includes our M . rogovi sp. nov. , M . grovei (Lartet, 1872) and M . larteti Chavan, 1947, from the Campanian of Palestine (Chavan 1947), as well as species currently classified within other genera, but also fitting the definition of Mesosaccella , such as Leda striatula Forbes, 1845, from the Cretaceous of India (Forbes 1845, p. 148, pl. XVII, fig. 14). The third Mesosaccella morphogroup comprises short and inflated forms with pointed posteriors, strong commarginal ornament fading on the anterior and posterior parts of the shell and carination of the posterior shell area. This group includes our M . toddi sp. nov. , and species described as Nuculana speetoniensis Woods, 1899, and Nuculana lineata J. de C. Sowerby, 1836, by Woods (1899). : Published as part of Hryniewicz, Krzysztof, Little, Crispin T. S. & Nakrem, Hans Arne, 2014, Bivalves from the latest Jurassic-earliest Cretaceous hydrocarbon seep carbonates from central Spitsbergen, Svalbard, pp. 1-66 in Zootaxa 3859 (1) on page 16, DOI: 10.11646/zootaxa.3859.1.1, http://zenodo.org/record/4930112 : {"references": ["Adams, H. & Adams, A. (1858) The genera of recent Mollusca arranged according to their organization (2). J. Van Voorst, London, 661 pp., 138 pls.", "Chavan, A. (1946) L'evolution des faunes marines des Mollusques dans le Nord-Ouest de l'Europe, de la fin du Cretace a celle de l'Eocene. Bulletin de la Societe Geologique de France, 16, 193 - 212.", "Muller, J. M. (1847) Monographie der Petrefacten der Aachener Kreideformation (1). Henry & Cohen, Bonn, 48 pp., 2 pls.", "Goldfuss, G. A. (1837) Petrefacta Germaniae 2 (3). Arnz, Dusseldorf, 84 pp., pls. 141 - 224, 25 pls.", "Palmer, C. P. (1973) The palaeontology of the Liassic (Lower Jurassic) clay pits at Stonehouse and Tuffley in Gloucestershire. Geological Magazine, 110, 249 - 263. http: // dx. doi. org / 10.1017 / s 0016756800036086", "Hodges, P. (2000) The Early Jurassic Bivalvia from the Hettangian and Lower Sinemurian of South-West Britain. Palaentographical Society Monographs, 154, 1 - 64 + vii, pls. 1 - 6.", "Deshayes, G. P. (1853) Traite elementaire de Conchyliologie 1, (2). Victor Masson, Paris, 273 - 368, i-xii.", "Duff, K. L. (1978) Bivalvia from the English lower Oxford Clay (Middle Jurassic). Palaeontographical Society Monograph s, 132, 1 - 137, pls. 1 - 13.", "Borissjak, A. (1904) Die Pelecypoden der Jura-Ablagerungen im Europaeischen Russland. I. Nuculidae. Memoires du Comite Geologique, Nouvelle Serie, 11, 1 - 49, pls. 1 - 3.", "Fursich, F. T. (1982) Upper Jurassic bivalves from Milne Land, East Greenland. GrOnlands Geologiske UndersOgelse, 144, 1 - 126.", "Lartet, L. (1872) Essai sur la geologie de la Palestine et des contrees avoisinantes: telles que l'Egypte et l'Arabie, comprenant les observations recueillies dans le cours de l'expedition du duc de Luynes a la Mer Morte. Suivi de Propositions de geologie et de botanique donnees par la faculte (3). Annales des Sciences geologiques, 1 - 96, pls. 9 - 12.", "Chavan, A. (1947) La faune campanienne du Mont des Oliviers d'apres les materiaux Vignal-Masse. Journal de Conchyliologie, 87, 125 - 196.", "Forbes, E. (1845) Report on the fossil Invertebrata from Southern India, collected by Mr. Kaye and Mr. Cunliffe. Transactions of the Geological Society of London. Series 2, 7, 97 - 174, pls. 7 - 19. http: // dx. doi. org / 10.1144 / transgslb. 7.97", "Woods, H. (1899) A monograph of the Cretaceous Lamellibranchia. Vol. I. Palaeontographical Society Monographs, 53, 1 - 72, pls. 1 - 14.", "Sowerby, J. de C. (1836) Observation on some of the strata between the chalk and the Oxford Oolite in the South-East of England. In: Fitton, W. H. (Ed.), Transactions of the Geological Society of London, 2, 4 (2), 335 - 349, pls. 11 - 23. http: // dx. doi. org / 10.1144 / transgslb. 4.2.103"]}