Thylacodes riisei

Last updated

Thylacodes riisei
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked):clade Caenogastropoda
clade Hypsogastropoda
clade Littorinimorpha
Superfamily: Vermetoidea
Family: Vermetidae
Genus: Thylacodes
Species:T. riisei
Binomial name
Thylacodes riisei
(Mörch, 1862)

Thylacodes riisei is a species of sea snail, a marine gastropod mollusk in the family Vermetidae, the worm snails or worm shells. This species was previously known as Serpulorbis riisei. [1]

In biology, a species ( ) is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. While these definitions may seem adequate, when looked at more closely they represent problematic species concepts. For example, the boundaries between closely related species become unclear with hybridisation, in a species complex of hundreds of similar microspecies, and in a ring species. Also, among organisms that reproduce only asexually, the concept of a reproductive species breaks down, and each clone is potentially a microspecies.

Sea snail common name for snails that normally live in saltwater

Sea snail is a common name for snails that normally live in salt water, in other words marine gastropods. The taxonomic class Gastropoda also includes snails that live in other habitats, such as land snails and freshwater snails. Many species of sea snails are edible and exploited as food sources by humans.

Family is one of the eight major hierarcical taxonomic ranks in Linnaean taxonomy; it is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as being the "walnut family".

Contents

Distribution

Description

The maximum recorded shell length is 37 mm. [2]

Habitat

The minimum recorded depth for this species is 0 m; maximum recorded depth is 2 m. [2]

Related Research Articles

Vermetidae family of molluscs

The Vermetidae, the worm snails or worm shells, are a taxonomic family of small to medium-sized sea snails, marine gastropod molluscs in the clade Littorinimorpha. The shells of species in the family Vermetidae are extremely irregular, and do not resemble the average snail shell, hence the common name "worm shells" or "worm snails".

<i>Micromelo undatus</i> species of mollusc

Micromelo undatus, common name the miniature melo, is an uncommon species of small sea snail or bubble snail, a marine opisthobranch gastropod mollusk in the family Aplustridae.

Ittibittium oryza is a species of sea snail, a marine gastropod mollusk in the family Cerithiidae.

Echinolittorina angustior is a species of sea snail, a marine gastropod mollusk in the family Littorinidae, the winkles or periwinkles.

Monoplex krebsii is a species of predatory sea snail, a marine gastropod mollusk in the family Cymatiidae.

<i>Septa occidentalis</i> species of mollusc

Septa occidentalis is a species of predatory sea snail, a marine gastropod mollusk in the family Cymatiidae.

Dendropoma corrodens is a species of small sea snail, a marine gastropod mollusk in the family Vermetidae, the worm snails or worm shells.

Dendropoma exsertum is a species of sea snail, a marine gastropod mollusk in the family Vermetidae, the worm snails or worm shells.

Dendropoma irregulare is a species of sea snail, a marine gastropod mollusk in the family Vermetidae, the worm snails or worm shells.

Petaloconchus erectus is a species of sea snail, a marine gastropod mollusk in the family Vermetidae, the worm snails or worm shells.

Petaloconchus floridanus is a species of sea snail, a marine gastropod mollusk in the family Vermetidae, the worm snails or worm shells.

Petaloconchus mcgintyi is a species of sea snail, a marine gastropod mollusk in the family Vermetidae, the worm snails or worm shells.

Petaloconchus nigricans is a species of sea snail, a marine gastropod mollusk in the family Vermetidae, the worm snails or worm shells.

Petaloconchus varians is a species of sea snail, a marine gastropod mollusk in the family Vermetidae, the worm snails or worm shells.

Thylacodes decussatus is a species of sea snail, a marine gastropod mollusk in the family Vermetidae, the worm snails or worm shells. This species was previously known as Serpulorbis decussatus.

Thylacodes squamolineatus is a species of sea snail, a marine gastropod mollusk in the family Vermetidae, the worm snails or worm shells.

Rissoina krebsii is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoinidae.

Megalomphalus oxychone is a species of very small sea snail, a marine gastropod mollusk in the family Vanikoridae.

Eumetula arctica is a species of sea snail, a gastropod in the family Newtoniellidae, which is known from the northwestern Atlantic Ocean, European waters, including the Mediterranean Sea, and the Gulf of Maine. It was described by Mørch, in 1857.

Thylacodes genus of molluscs

Thylacodes is a genus of sea snails, marine gastropod mollusks in the family Vermetidae, the worm snails or worm shells. The species in this genus were previously placed in the genus Serpulorbis.

References

  1. Serpulorbis riisei (Mörch, 1862) . WoRMS (2010). Serpulorbis riisei (Mörch, 1862). Accessed through: World Register of Marine Species at http://www.marinespecies.eu/aphia.php?p=taxdetails&id=419556 on 9 July 2010.
  2. 1 2 Welch J. J. (2010). "The "Island Rule" and Deep-Sea Gastropods: Re-Examining the Evidence". PLoS ONE 5(1): e8776. doi : 10.1371/journal.pone.0008776.