The Ancillariidae is a taxonomic family of sea snails, marine gastropod molluscs in the superfamily Olivoidea.MolluscaBase (2018). Ancillariidae Swainson, 1840. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=993219 on 2018-11-21 They are gastropods, which belong to the larger group of mollusks. This family is part of the superfamily Cypraeoidea, which includes cowries, a well-known group of sea snails.
Distribution and habitat Ancillariidae species can be found in tropical and subtropical waters around the world, particularly in the Indo-Pacific region. They inhabit diverse marine environments, including coral reefs, sandy bottoms, and seagrass beds.Returning to the roots: morphology, molecular phylogeny and classification of the Olivoidea (Gastropoda: Neogastropoda) - Scientific Figure on ResearchGate. Available from: https://www.researchgate.net/figure/Radulae-of-Pseudolividae-A-B-and-Ancillariidae-C-I-A-Pseudoliva-sepimenta-MNHN_fig12_316733118 [accessed 18 Jun, 2023]
Physical characteristics Ancillariidae shells are elongated, cylindrical, and slightly curved. They have a smooth and glossy surface, with some species displaying prominent ridges or knobs. The shells exhibit a wide range of colors and patterns, from plain white or cream to vibrant and intricate designs.Kantor, Yu & Fedosov, Alexander & Puillandre, Nicolas & Bouchet, Philippe. (2016). Integrative taxonomy approach to Indo-Pacific Olividae: New species revealed by molecular and morphological data. 26. 123-144. Returning to the roots: morphology, molecular phylogeny and classification of the Olivoidea (Gastropoda: Neogastropoda) Yuri I Kantor, Alexander E Fedosov, Nicolas Puillandre, Céline Bonillo, Philippe Bouchet
Behavior and feeding habits Ancillariidae snails are primarily nocturnal, being active at night to feed on algae, detritus, and small invertebrates. They use their specialized radula to scrape food particles from the substrate or graze on algae. During the day, they seek shelter in crevices or burrow in the sand to avoid predators and excessive sunlight.
Reproduction Reproduction in Ancillariidae involves separate sexes, with individuals being either male or female. They release eggs and sperm into the water, where fertilization takes place externally. The larvae develop into planktonic forms, drifting in ocean currents until they settle on the substrate and undergo metamorphosis into adults. Genera Genera within the family Ancillariidae include:
Alocospira Cossmann, 1899 Amalda H. Adams & A. Adams, 1853 † Anbullina K. van W. Palmer, 1937 Ancilla Lamarck, 1799 † Ancillarina Bellardi, 1882 Ancillina Bellardi, 1882 Ancillista Iredale, 1936 † Ancillopsis Conrad, 1865 Anolacia Gray, 1857 † Bearizia Pacaud, Merle & Pons, 2013 Eburna Lamarck, 1801 Entomoliva Bouchet & Kilburn, 1991 † Eoancilla Stephenson, 1941 Micrancilla Maxwell, 1992 † Monoptygma I. Lea, 1833 † Olivula Conrad, 1832 † Palmoliva Allmon & Friend, 2023 † Spirancilla H. E. Vokes, 1935 Turrancilla Martens, 1903
Genera brought into synonymy Anaulax Roissy, 1805: synonym of Ancilla Lamarck, 1799 (unnecessary substitute name for Ancilla) Ancillaria Lamarck, 1811: synonym of Ancilla Lamarck, 1799 (unnecessary substitute name for Ancilla Lamarck, 1799) Ancillus Montfort, 1810: synonym of AncillaLamarck, 1799 (invalid: unjustified emendation of Ancilla) Anolacea: synonym of Anolacia Gray, 1857 (misspelling) Austrancilla Habe, 1959: synonym of Amalda H. Adams & A. Adams, 1853 Baryspira P. Fischer, 1883: synonym of Amalda (Baryspira) P. Fischer, 1883 represented as Amalda H. Adams & A. Adams, 1853 Chilotygma H. Adams & A. Adams, 1853: synonym of Ancilla (Chilotygma) H. Adams & A. Adams, 1853 represented as Ancilla Lamarck, 1799 Dipsaccus H. Adams & A. Adams, 1853: synonym of Eburna Lamarck, 1801 Exiquaspira Ninomiya, 1988: synonym of Amalda H. Adams & A. Adams, 1853 Gracilancilla Thiele, 1925: synonym of Ancillina Bellardi, 1882 Gracilispira Olsson, 1956: synonym of Amalda (Gracilispira) Olsson, 1956 represented as Amalda H. Adams & A. Adams, 1853 Sandella Gray, 1857: synonym of Amalda H. Adams & A. Adams, 1853 Sparella Gray, 1857: synonym of Ancilla (Sparella) Gray, 1857 represented as Ancilla Lamarck, 1799 (original rank)
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