Drilliidae

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Drilliidae
Cymatosyrinx parciplicata 003.jpg
An apertural view of a shell of Cymatosyrinx parciplicata
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Neogastropoda
Superfamily: Conoidea
Family: Drilliidae
Olsson, 1964
Genera

See text

Synonyms [1]

Clavidae Casey, 1904 (non McCrady, 1859: preoccupied)

Contents

The Drilliidae are a taxonomic family of small predatory sea snails with high-spired shells. They are classified as marine gastropod mollusks in the superfamily Conoidea. [2]

This family has no subfamilies. It consists of about 30 genera and approximately 500 Recent species.

Description

The shell is claviform with a tall spire, or squatly conical to biconical. In many species, the siphonal canal is truncated. The aperture is U-shaped with a parietal callus pad.

The sculpture of the shell shows prominent axial ribs with a polished surface. Most species have a dorsal varix (transverse elevation), except in the genera Cymatosyrinx , Elaeocyma and Splendrillia . The protoconch can be smooth or very carinate. The ovate operculum has a terminal nucleus. [3]

The radula of the species in this family have characteristically five teeth in each row (formula : 1 + 1 + 1 + 1 + 1) with a vestigial central tooth, comb-like lateral teeth and a pair of flat-pointed, slender marginal teeth. [4]

The foregut structure of the anterior alimentary system has the least derived foregut anatomy of all the families in the superfamily Conoidea. [5]

Distribution

This family has wide distribution, ranging from Iceland to the Antarctic Ocean, found at intertidal to abyssal depths. This is reflected in the variability in larval shells and the size of the shell (from a few millimetres to 6 cm) and the characteristics of the protoconch and the teleoconch. [6]

Taxonomic history

The genera in this family were originally separated from the subfamily Clavitulinae and classified by H.& A. Adams (1858) under subfamily Turritinae, because their operculum has a terminal instead of a central nucleus. In 1942, the species with a U-shaped sinus and a parietal callus pad were brought by Powell in the new subfamily Clavinae. In 1966, Morrison proposed the subfamily Drillinae (= Clavinae) for the species with a stenoglossan radula with comb-like lateral teeth. Finally, in 1993, Taylor et al. proposed the promotion of Drillinae from subfamily to the family level Drilliidae. [3] [7]

Taxonomy

Genera in the family Drilliidae include: [1]

Genera brought into synonymy
Genera moved to other families

Related Research Articles

<span class="mw-page-title-main">Conidae</span> Family of sea snails

Conidae, with the current common name of "cone snails", is a taxonomic family of predatory sea snails, marine gastropod molluscs in the superfamily Conoidea.

<span class="mw-page-title-main">Conoidea</span> Superfamily of predatory sea snails

Conoidea is a superfamily of predatory sea snails, marine gastropod mollusks within the suborder Hypsogastropoda. This superfamily is a very large group of marine mollusks, estimated at about 340 recent valid genera and subgenera, and considered by one authority to contain 4,000 named living species.

<span class="mw-page-title-main">Terebridae</span> Family of sea snails

The Terebridae, commonly referred to as auger shells or auger snails, is a group or family of small to large predatory marine gastropods in the superfamily Conoidea.

<span class="mw-page-title-main">Turrid</span> Common name for many species of snail

Turrid, plural turrids, is a common name for a very large group of predatory sea snails, marine gastropod mollusks which until recently were all classified in the family Turridae. However, recently the family was discovered to be polyphyletic and therefore was split into a number of families.

<i>Crassispira</i> Genus of gastropods

Crassispira is a genus of small predatory sea snails with narrow, high-spired shells, marine gastropod mollusks in the family Pseudomelatomidae. They first appeared in the fossil record approximately 48.6 million years ago during the Eocene epoch, and still exist in the present day.

<span class="mw-page-title-main">Nassariidae</span> Family of gastropods

The Nassariidae, Nassa mud snails (USA), or dog whelks (UK), are a taxonomic family of small to medium-sized sea snails, marine gastropod mollusks in the clade Neogastropoda.

<span class="mw-page-title-main">Pseudomelatomidae</span> Family of gastropods

Pseudomelatomidae is a family of predatory sea snails, marine gastropods included in the superfamily Conoidea and part of the Neogastropoda.

Mangeliidae is a monophyletic family of small to medium-sized, predatory sea snails, marine gastropod mollusks in the superfamily Conoidea.

<i>Elaeocyma</i> Genus of gastropods

Elaeocyma is a genus of sea snails in the family Drilliidae.

<i>Globidrillia</i> Genus of gastropods

Globidrillia is a genus of sea snails, marine gastropod mollusks in the family Drilliidae.

Leptadrillia is a genus of sea snails, marine gastropod mollusks in the family Drilliidae.

<i>Splendrillia</i> Genus of gastropods

Splendrillia is a genus of sea snails, marine gastropod mollusks in the family Drilliidae.

<i>Syntomodrillia</i> Genus of gastropods

Syntomodrillia is a genus of sea snails, marine gastropod mollusks in the family Drilliidae.

<i>Miraclathurella</i> Genus of gastropods

Miraclathurella is a genus of sea snails, marine gastropod mollusks in the family Pseudomelatomidae.

Monilispira is a genus of sea snails, marine gastropod mollusks in the family Pseudomelatomidae, the turrids and allies.

Fusiturricula is a genus of sea snails, marine gastropod mollusks in the family Drilliidae.

<i>Clavus</i> (gastropod) Genus of gastropods

Clavus is a genus of small sea snails, marine gastropod mollusks in the family Drilliidae.

<span class="mw-page-title-main">Horaiclavidae</span> Family of gastropods

Horaiclavidae is a family of predatory sea snails, marine gastropod mollusks in the superfamily Conoidea.

<span class="mw-page-title-main">Raphitomidae</span> Family of sea snails

Raphitomidae is a family of small to medium-sized sea snails, marine gastropod mollusks in the superfamily Conoidea.

<i>Strictispira</i> Genus of gastropods

Strictispira is a genus of sea snails, marine gastropod mollusks in the family Pseudomelatomidae, the turrids and allies.

References

  1. 1 2 WoRMS (2010). Drilliidae. In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2010) World Marine Mollusca database. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=23032 on1 September 2011
  2. ↑ Bouchet, P.; Rocroi, J.-P. (2005). "Classification and Nomenclator of Gastropod Families". Malacologia. 47 (1–2).
  3. 1 2 Chen-Kwoh Chang, Small Turrids of Taiwan, Chapter 3 , History and Taxonomy of the Clavidae; June 1, 2001 [ permanent dead link ]
  4. ↑ Kantor, Yuri I; John D.Taylor (2000). "Formation of marginal radular teeth in Conoidea (Neogastropoda) and the evolution of the hypodermic envenomation mechanism". Journal of Zoology. Cambridge University Press. 252 (2): 251–262. doi:10.1111/j.1469-7998.2000.tb00620.x.
  5. ↑ Brian Morton, The Malacofauna of Hong Kong and southern China
  6. ↑ Andrea Nappo, Xabier Rey, Daniel Pellegrini, Giuseppe Bonomolo & Fabio Crocetta, Revisiting the disjunct distribution of Conopleura Hinds, 1844 (Mollusca:Gastropoda: Drilliidae); Zootaxa 4392 (3): 567–587]
  7. ↑ Taylor, J.D., Kantor, Y.I& Sysoev, A.V.,1993 . Foregut anatomy, feeding mechanisms, relationships and classification of the Conoidea (=Toxoglossas) (Gastropoda) Bull. Nat. Hist. Mus. Lond .(Zool) 5(2): 125-170
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