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Gastropods constituted one of the most successful faunal groups in the Danish Basin around the Cretaceous-Palaeogene (K-Pg) boundary, both with regard to abundance and diversity. Only 19 species were known previously; this number is here increased to 140. The end-Cretaceous Danish fauna is represented by 79 taxa of which 85 % became extinct at the boundary. A new fauna of 72 species arose within a remarkably short time interval of less than half a million years. The extinction seems to have hit rather randomly with regard to feeding strategies, while geographical range stands out as the single most important factor in survivorship. The succeeding speciation was controlled by changes in substrate and food availability, where non-carnivores and taxa dependent on a hard substrate were replaced by hunting carnivores and mud-adapted taxa in response to the disappearance of the Cretaceous bryozoan mounds. The gastropod genus Loxotoma Fischer, 1885 is renamed as Palaeoloxotoma nom. nov. due to its junior synonymy with a moth. 38 new species are erected. These are Acirsa torensis n. sp., Acmaea selandica n. sp., Ageria laxa n. sp., Ageria skeldervigensis n. sp., Amaea alicae n. sp., Amaea stevniensis n. sp., Amaurellina ravni n. sp., Arene jakobseni n. sp., Ataphrus (Ataphrus) knoesensis n. sp., Bathrotomaria jakobseni n. sp., Ceratia rodvigensis n. sp., Cerithiella selandica n. sp., Cerithiopsis restemlongis n. sp., Claviscala minor n. sp., Coniscala umbilica n. sp., Cranopsis cretacea n. sp., Cylichna stevniensis n. sp., Dolicholatirus lorenzi n. sp., Epalxis? rosenkrantzi n. sp., Epetrium s.l. skeldervigensis n. sp., Eucycloscala gracilicostatus n. sp., Fusinus schnetleri n. sp., Mathilda dania n. sp., Mesalia danica n. sp., Opaliopsis carlsbergi n. sp., Pseudocochlespira transversa n. sp., Pseudotoma danica n. sp., Tatara pseudosassia n. sp., Tectus? indecorus n. sp., Temnotropis stevniensis n. sp., Thereitis carlsbergi n. sp., Thereitis cretacea n. sp., Thylacodes contendis n. sp., Unitas heinbergi n. sp., Vatopsis heinbergi n. sp., Vexillum? rosenkrantzi n. sp., Vexillum tenestolidum n. sp. and Zebinella selandica n. sp.

Four species of copepods are described based on specimens of both sexes from tegulid top shells (Vestigastropoda) caught from coastal waters of southern Japan. Three species, including two undescribed and one known of the genus Panaietis (Copepoda: Cyclopoida: Anthessiidae) were found in the pharynx and esophagus of gastropods. Panaietis incamerata Stebbing, 1900, P. doraconis n. sp., and P. satsuma n. sp. are distinguished from its congeners by the dorsal plates on the first pedigerous somite, the genital somite, the shape of the spines on legs, the number of setae on legs 1 and 2, and the position and shape of leg 5. Pseudanthessius imo n. sp. (Cyclopoida: Pseudanthessiidae) was found in the mantle cavity of the host. This copepod differs from its congeners in the proportions of the caudal ramus, the armature and proportion of the antenna, the armature of the exopod and general shape of the endopod of leg 4, and the presence of a post-rostral process.

Tectus (Cardinalia) virgatus (Gmelin, 1791) Trochus virgatus Gmelin, 1791: 3580, no. 83. Viader, 1937: 55. Paes da Franca, 1960 b: 56, pl. 2, fig. 1. Kensley, 1973: 34, fig. 53. Sheppard, 1984: 46. Jarrett, 2000: 6, fig. 15. Type loc.: ‘ In India ’; location of type material unknown. Trochus (Cardinalia) virgatus — E.A. Smith, 1903 a: 388. Lamy, 1909: 330. Barnard, 1963 a: 253. Moura, 1972: 21, pl. 2, fig. 6. Zuschin et al., 2009: 102, pl. 12, figs 1–3. Tectus (Cardinalia) virgatus — Moura, 1966: 26, pl. 1, fig. 2. Moura, 1969: 16. Herbert, 1993: 299, figs 109–115 (detailed chresonymy). Deuss et al., 2013: 138, fig. a. Distribution. Red Sea, East Africa and western Indian Ocean islands south to central Zululand (Leven Point) and formerly also in Durban Bay; local specimens living on shallow subtidal reefs to 20 m. Notes. Records from Indonesia and the Philippines seem unlikely (Herbert 1993)., Published as part of Herbert, David G., 2015, An annotated catalogue and bibliography of the taxonomy, synonymy and distribution of the Recent Vetigastropoda of South Africa (Mollusca), pp. 1-98 in Zootaxa 4049 (1) on page 73, DOI: 10.11646/zootaxa.4049.1.1, http://zenodo.org/record/245367, {"references":["Gmelin, J. F. (1791) Caroli a Linne, Systema Naturae. Vol. 1. Part 6. 13 th Edition. Georg Emanuel Beer, Lipsiae, Vermes, pp. 3021 - 3910.","Viader, R. (1937) Revised catalogue of the testaceous Mollusca of Mauritius and its dependencies. Mauritius Institute Bulletin, 1, i - xiii + 1 - 111, plus map.","Sheppard, A. L. S. (1984) The molluscan fauna of Chagos (Indian Ocean) and an analysis of its broad distribution patterns. Coral Reefs, 3, 43 - 50. http: // dx. doi. org / 10.1007 / BF 00306139","Jarrett, A. G. (2000) Marine Shells of the Seychelles. Carol Green Publishing, Cambridge, 149 pp.","Smith, E. A. (1903 a) A list of species of Mollusca from South Africa, forming an appendix to G. B. Sowerby's \" Marine Shells of South Africa \". Proceedings of the Malacological Society of London, 5, 354 - 402.","Lamy, E. (1909) Coquilles marines recueillies par M. F. Geay a Madagascar (1905). Memoires de la Societe Zoologique de France, 22, 299 - 346, pl. 15.","Barnard, K. H. (1963 a) Contributions to the knowledge of South African marine Mollusca. Part IV. Gastropoda: Prosobranchiata: Rhipidoglossa, Docoglossa. Tectibranchiata. Polyplacophora. Solenogastres. Scaphopoda. Annals of the South African Museum, 47, 201 - 360.","Moura, A. R. (1972) Contribuicao para o conhecimento dos moluscos subfosseis do Relanzapo (Nacala-Mocambique).","Zuschin, M., Janssen, R. & Baal, C. (2009) Gastropods and their habitats from the northern Red Sea (Egypt: Safaga). Part 1: Patellogastropoda, Vetigastropoda and Cycloneritimorpha. Annalen des Naturhistorischen Museums in Wien, 111 (A), 73 - 158.","Moura, A. R. (1966) Gastropodes dos recifes corais elevados de Messonta e Matibane (Mocambique). Revista dos Estudos Gerais Universitarios de Mo c ambique, Series 2, 3, 15 - 54, pls. 1 - 10.","Moura, A. R. (1969) Contribuicao para o conhecimento dos gres costeiros do Sul do Save (Mocambique). Boletim dos Servicos de Geologia e Minas de Mocambique, 35, 5 - 42, pls. 1 - 11.","Herbert, D. G. (1993) Revision of the Trochinae, tribe Trochini (Mollusca: Prosobranchia: Trochidae) in southern Africa. Annals of the Natal Museum, 34, 239 - 308.","Deuss, M. Richard, G. & Verneau, N. (2013) Mollusques de Mayotte. Naturalistes Environement et Patrimonie de Mayotte, Mamoudzou, 378 pp."]}

Herbert, David G. (2015): An annotated catalogue and bibliography of the taxonomy, synonymy and distribution of the Recent Vetigastropoda of South Africa (Mollusca). Zootaxa 4049 (1): 1-98, DOI: http://dx.doi.org/10.11646/zootaxa.4049.1.1

Tectus mauritianus (Gmelin, 1791) —new record Trochus mauritianus Gmelin, 1791: 3582. Odhner, 1919: 32. Viader, 1937: 55. Braga, 1952: 33, pl. 6, fig. 7. Jarrett, 2000: 5, fig. 14. Type loc.: ‘ frequens ad insulas Barboniae [sic] et S. Mauritii ’ [frequent at the islands of Bourbon (Réunion) and Mauritius]; location of type material unknown. Trochus (Pyramis) Mauritianus [sic]— Martens, 1880: 295. Trochus (Tectus) mauritianus — Pilsbry, 1889 in 1889 – 1890: 23, pl. 2, figs 11, 12 and pl. 4, figs 24, 25, 27. Lamy, 1909: 331. Dautzenberg, 1929: 534. Bisacchi, 1931: 177. Moura, 1972: 21, pl. 2, fig. 5. Tectus (Tectus) mauritianus — Moura, 1966: 25, pl. 1, fig. 1. Moura, 1969: 16. Deuss et al., 2013: 138, fig. b. Tectus mauritianus — Drivas & Jay, 1988: 34, pl. 2, fig. 4. Distribution. South-western Indian Ocean, from Tanzania, the Seychelles, Comoros, Mascarene Islands, Madagascar and Mozambique; locally recorded only from the Durban area, but probably occurring only as occasional waifs from populations to the north; living LST and shallow subtidal reefs. Subgenus Cardinalia Gray, 1842. Type species (s.d. Wenz 1938): Trochus virgatus Gmelin, 1791., Published as part of Herbert, David G., 2015, An annotated catalogue and bibliography of the taxonomy, synonymy and distribution of the Recent Vetigastropoda of South Africa (Mollusca), pp. 1-98 in Zootaxa 4049 (1) on page 73, DOI: 10.11646/zootaxa.4049.1.1, http://zenodo.org/record/245367, {"references":["Gmelin, J. F. (1791) Caroli a Linne, Systema Naturae. Vol. 1. Part 6. 13 th Edition. Georg Emanuel Beer, Lipsiae, Vermes, pp. 3021 - 3910.","Odhner, N. H. (1919) Contribution a la faune malacologique de Madagascar. Arkiv for Zoologi, 12, 1 - 52.","Viader, R. (1937) Revised catalogue of the testaceous Mollusca of Mauritius and its dependencies. Mauritius Institute Bulletin, 1, i - xiii + 1 - 111, plus map.","Braga, J. M. (1952) Materiais para o estudo da fauna malacologica de Mocambique. Anais Junta Investigacoes do Ultramar, 7 (3), 5 - 67, pls. 1 - 14. [Publicacoes do Instituto de Zoologia \" Dr Augusto Nobre \"]","Jarrett, A. G. (2000) Marine Shells of the Seychelles. Carol Green Publishing, Cambridge, 149 pp.","Martens, E. von (1880) Mollusken. In: Mobius, K. (Ed.), Beitrage zur Meeresfauna der Insel Mauritius und der Seychellen. Gutmann, Berlin, pp. 181 - 352, pls. 19 - 22.","Pilsbry, H. A. (1889 - 1890) Trochidae. In: Tryon, G. W. (Ed.), Manual of Conchology, Series 1, 11, pp. 1 - 519, pls. 1 - 67. [Academy of Natural Sciences, Philadelphia, pp. 1 - 208, pls. 1 - 50, 1889; pp. 209 - 519, pls. 51 - 67, 1890.]","Pilsbry, H. A. (1890 - 1891) Stomatellidae, Scissurellidae, Pleurotomariidae, Haliotidae, Scutellinidae, Addisoniidae, Cocculinidae, Fissurellidae. In: Tryon, G. W. (Ed.), Manual of Conchology, Series 1, 12, pp. 1 - 323, pls. 1 - 64. [Academy of Natural Sciences, Philadelphia, pp. 1 - 192, pls. 1 - 45, 1890; pp. 193 - 323, pls. 46 - 64, 1891.]","Lamy, E. (1909) Coquilles marines recueillies par M. F. Geay a Madagascar (1905). Memoires de la Societe Zoologique de France, 22, 299 - 346, pl. 15.","Dautzenberg, P. (1929) Contribution a l'etude de la faune de Madagascar. Mollusca II, Mollusca marina testacea. Faunes des colonies Francais, 3 (4), 115 - 430 (321 - 636).","Bisacchi, J. (1931) Alcuni Trochus del Mar Rosso. Annali del Museo Civico di Storia Naturale \" Giacomo Doria \", 55, 176 - 182.","Moura, A. R. (1972) Contribuicao para o conhecimento dos moluscos subfosseis do Relanzapo (Nacala-Mocambique).","Moura, A. R. (1966) Gastropodes dos recifes corais elevados de Messonta e Matibane (Mocambique). Revista dos Estudos Gerais Universitarios de Mo c ambique, Series 2, 3, 15 - 54, pls. 1 - 10.","Moura, A. R. (1969) Contribuicao para o conhecimento dos gres costeiros do Sul do Save (Mocambique). Boletim dos Servicos de Geologia e Minas de Mocambique, 35, 5 - 42, pls. 1 - 11.","Deuss, M. Richard, G. & Verneau, N. (2013) Mollusques de Mayotte. Naturalistes Environement et Patrimonie de Mayotte, Mamoudzou, 378 pp.","Drivas, J. & Jay, M. (1988) Coquillages de La Reunion et de l'ile Maurice. Times Editions, Singapore, 159 pp."]}