CLASSIFICATION AND NOMENCLATOR OF GASTROPOD FAMILIES PDF

Article: Classification and Nomenclator of Gastropod Families. Add this to your Mendeley library Report an error. Summary; Details; MODS; BibTeX; RIS. About names at the rank of subtribe, tribe, subfamily, family and superfamily have been proposed for Recent and fossil gastropods. All these names are. Classification and Nomenclator of Gastropod Families. Philippe Bouchet, Jean- Pierre Rocroi · Page [1]. Page 2. Page 3. Page 4. Page 5.

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Wikimedia Commons has media related to Template: The clades are unranked. Since the classifcation of this taxonomic system invarious proposals for changes have been published by other authors, for more information see changes in the taxonomy of gastropods since The clades have been given names which are similar to, or in some cases the same as, traditional Linnaean names for taxa above the level of superfamily.

Classification of families into subfamilies however is often not well resolved, and should be regarded as the best possible hypothesis. From Wikipedia, the free encyclopedia.

Since the publication of this taxonomic system invarious changes have been published by other authors, for more information see changes in the taxonomy of gastropods since Within the Caenogastropoda there is one extra clade. This system supersedes gastopod system of Ponder and Lindberg from A full bibliographic reference is provided for each taxon, giving the name of the authority, the original publication, the date of that publication, the type genus for the taxon, its nomenclatural status, and its validity under the rules of the ICZN.

Classification and nomenclator of gastropod families.

Clawsification a taxonomy such as this one can be seen as an attempt to elucidate part of the tree of lifea phylogenetic tree. Retrieved from ” https: Subsequent revisions by other authors have been made since the publication of this paper. A clade must by definition contain only one lineage, and it was considered to be the case that these “informal groups” may either contain more than one lineage, or only contain part of a lineage. In contrast, most of the previous overall taxonomic schemes for gastropods relied on morphological features to classify these animals, and used taxon ranks such as ordersuperorder and suborder, which are typical of classifications that are still inspired by Linnaean taxonomy.

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In contrast, within the Heterobranchia, for some of the nudibranch groups there are six separate clades above the level of superfamily, and in the case of most of the land snailsthere are four clades above the level of superfamily.

International Journal of Malacology.

Classification and Nomenclator of Gastropod Families – Ph Bouchet – Google Books

PatellogastropodaVetigastropodaCocculiniformiaNeritimorphaCaenogastropodaand Heterobranchia. The first three of these major clades have no nesting clades within them: They gasrtopod adopted again the common additional ranks above superfamily: Superfamily names are standardized so that they all end in the suffix “-oidea”, also commonly used for superorders and subclasses, replacing the “-acea” ending found especially in the older literature.

Contains the Palaeozoic Neritomorpha of uncertain position and the clades Cyrtoneritimorpha and Cycloneritimorpha. Contains the subclades ElasmognathaOrthurethra and gasropod informal group Sigmurethra. Whenever monophyly a single ancestry has nomenclqtor yet been tested and confirmed, or where a traditional taxon of gastropods has already been discovered to be paraphyletic that it excludes some of its descendants the term “group” or “informal group” has been used.

IMIS | Flanders Marine Institute

Two other superfamilies are part of the clade Sigmurethra, but they are not in the limacoid clade:. Systems of classification such as this one are primarily of value to malacologists people who study mollusks and other biologists.

In some parts of the taxonomy, instead of “clade”, Bouchet and Rocroi labelled groupings of taxa as a “group” or an “informal group”. By using this site, you agree to the Terms of Use and Privacy Policy. The taxonomy of the Gastropoda as it was revised in by Philippe An and Jean-Pierre Rocroi is a system for the scientific classification of gastropod classiffication.

Both Linnaean taxa and clades are invalid if it turns out they are polyphyleticin other words if they oof of more than one lineage. The system encompasses both living and extinct groups, as well as some fossils whose classification as gastropods is uncertain.

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This cladogram is based on the following information. Views Read Edit View history.

Contains the clades LittorinimorphaNeogastropoda and the informal group Ptenoglossa. Here the information is displayed in the form of a cladogram an evolutionary tree of descent. In the following, more detailed list, indentation is used only for the ranks of superfamily and family. Contains the Caenogastropoda of uncertain systematic position, the informal group Architaenioglossa and nkmenclator clades Sorbeoconcha and Hypsogastropoda.

The list format used below makes clear classificxtion taxa are informal groups rather than clades:.

Philippe Bouchet

Gastropods are a taxonomic class of animals which consists of snails and slugs of every kind, from the land, from freshwaterand from saltwater. Bouchet and Rocroi use six main clades: A clearer sense of the hierarchy of the clades can be drawn from the list immediately above this one. In the past, the taxonomy nnomenclator gastropods was largely based on the morphological characters of the taxa, such as the shell characteristics including the protoconch in shelled species, and the internal anatomynomrnclator the structure of nomenxlator radula and details of the reproductive system.

Further research will eventually resolve these questions. Strong in Malacologia,61 1—2: The clade names are not indented, but their hierarchy is indicated by the size of the font used.

It is worth bearing in mind however that this taxonomy is provisional: This page was last edited on 25 Julyat In this taxonomy valid families are recognized.

The paper setting out this taxonomy was published in the journal Malacologia. Gastropod taxonomy Systems of animal taxonomy Malacological literature.