Turridae | |
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Five views of a shell of Turris crispa | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
Subclass: | Caenogastropoda |
Order: | Neogastropoda |
Superfamily: | Conoidea |
Family: | Turridae H. Adams & A. Adams, 1853 (1838) |
Type genus | |
Turris Batch, 1789 | |
Genera | |
See text | |
Synonyms [1] | |
Pleurotomidae |
Turridae is a taxonomic family name for a number of predatory sea snails, marine gastropod mollusks in the superfamily Conoidea. [1]
The family name Turridae was originally given to a very large group of several thousand sea snail species that were thought to be closely related. The family was described with about 700 genus-group taxa and an estimated 10,000 recent and fossil species. [2] However, that original grouping was discovered to be polyphyletic.
In recent years, the family Turridae has been much reduced in size, because a number of other families were created to contain the monophyletic lineages that had previously been thought to belong in the same family.
The common name turrids is still used informally to refer to the polyphyletic group.
Species in the family Turridae are found worldwide; most are found in the neritic zone. It is a major component of the Indo-Pacific molluscan fauna.[ This paragraph needs citation(s) ]
The shape of the narrow shells is more or less fusiform. The whorls are elongate to broadly spindle-shaped and conical. The shells are generally small, their length usually smaller than 150 mm (with a few exceptions, up to 250 mm). The sculpture is variable. The shell shows strong ribs and spiral ridges.The aperture is long and narrow, with a siphonal canal and an anal sinus. [3]
Turrids are carnivorous, predatory gastropods. Most species have a poison gland used with the toxoglossan radula, used to prey on vertebrates and invertebrate animals (mostly polychaete worms) or in self-defense. [4] Some turrids have lost the radula and the poison gland. The radula, when present, has two or three teeth in a row. It lacks lateral teeth and the marginal teeth are of the wishbone or duplex type. The teeth with a duplex form are not shaped from two distinct elements but grow from a flat plate, by thickening at the edges of the teeth and elevation of the rear edge from the membrane. [5]
Female turrids lay their eggs in lens-shaped capsules.[ This paragraph needs citation(s) ]
The family Turridae, in the older broadest sense of the group, was in the past perceived as one of the most difficult groups to study because of a large number of supra-specific described taxa, [6] which were complicated by their species diversity. [7]
This led to an outcry by Melvill & Standen in 1901:
One cannot help feeling, indeed, the more the Pleurotomacea (now former name for the Pleurotomidae, synonym of Turridae) are studied closely, how painfully artificial and misleading are many of the characters which are employed in differentiating the sections, so called genera, and subgenera of this vast assemblage. It is almost too large for the monographer, and so enormous are the number of species annually brought to light, especially since the abyssal forms have been sought after and procured with greater facility, that we fear confusion will soon be worse confounded, and the patience of malacologists tried too far, unless some benefactor of this race arises to study these forms alone as his life's work. [8]
Although some species were relatively common, many were rare, some being known only from single specimens; this is another factor that made studying the group difficult. Turridiae was in this sense a heterogenous family that contained, more or less, all conoideans not included in the Conidae and Terebridae. Most of this was based on radula and shell characters. Taylor et al. (1993) tried to rely more on anatomical characters and moved several subfamilies from Turridae to Conidae. [9]
According to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005, which attempted to set out a stable taxonomy, this family consisted of the following five subfamilies: [10]
The 2005 classification system for the group was greatly changed by the 2011 publication of an article revising the taxonomy of the superfamily Conoidea, Bouchet P., Kantor Yu.I., Sysoev A. & Puillandre N. (2011) A new operational classification of the Conoidea. Journal of Molluscan Studies 77: 273-308. The authors presented a new classification of the superfamily Conoidea on the genus level, based on anatomical characters but also on the molecular phylogeny as presented by Puillandre N., et al., 2008. [11] The polyphyletic family Turridae was resolved into 13 monophyletic families (containing 358 currently recognized genera and subgenera) [12]
Genera in the family Turridae sensu stricto, include according to WoRMS: [13]
Subfamily Strictispirinae McLean, 1971 : synonym of Strictispiridae McLean, 1971, synonym of Pseudomelatomidae Morrison, 1966 (raised to family level)
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 340 recent valid genera and subgenera, and considered by one authority to contain 4,000 named living species.
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.
Pseudomelatomidae is a family of predatory sea snails, marine gastropods included in the superfamily Conoidea and part of the Neogastropoda.
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.
Turris crispa is a species of sea snail, a marine gastropod mollusk in the family Turridae, the turrids.
Mangeliidae is a monophyletic family of small to medium-sized, predatory sea snails, marine gastropod mollusks in the superfamily Conoidea.
Cryptogemma is a genus of sea snails, marine gastropod mollusks in the family Turridae, the turrids.
Gemmula, common name the gem turrids, is a genus of sea snails, marine gastropod mollusks in the family Turridae, the turrids.
Iotyrris is a genus of sea snails, marine gastropod mollusks in the family Turridae, the turrids.
Lucerapex is a genus of sea snails, marine gastropod mollusks in the family Turridae, the turrids.
Xenuroturris is a genus of sea snails, marine gastropod mollusks in the family Turridae, the turrids.
Cochlespira is a genus of sea snails, marine gastropod mollusks in the family Cochlespiridae.
Borsoniidae is a monophyletic family of small to medium-sized sea snails, marine gastropod mollusks in the superfamily Conoidea.
Horaiclavidae is a family of predatory sea snails, marine gastropod mollusks in the superfamily Conoidea.
Cochlespiridae is a taxonomic family of predatory sea snails, marine gastropod mollusks in the superfamily Conoidea.
Raphitomidae is a family of small to medium-sized sea snails, marine gastropod mollusks in the superfamily Conoidea.
Maoritomella is a genus of sea snails, marine gastropod mollusks in the family Borsoniidae.
Heteroturris is a genus of sea snails, marine gastropod mollusks in the family Borsoniidae
Strictispira is a genus of sea snails, marine gastropod mollusks in the family Pseudomelatomidae, the turrids and allies.
Xenuroturris legitima is a species of sea snail, a marine gastropod mollusk in the family Turridae, the turrids.