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 . Page 2. Page 3. Page 4. Page 5.
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Superfamily names are standardized so that they all end in the suffix “-oidea”, also commonly used for superorders and nimenclator, replacing the “-acea” ending found especially in the older literature. PatellogastropodaVetigastropodaCocculiniformiaNeritimorphaCaenogastropodaand Heterobranchia.
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The taxonomy of the Gastropoda as it was revised in by Philippe Bouchet and Jean-Pierre Rocroi is a system for the scientific classification of gastropod mollusks. Within the Caenogastropoda there is one extra clade. This system supersedes the system of Ponder and Lindberg from They have adopted again the common additional ranks above superfamily: The list format used below makes clear which taxa are informal groups rather than clades:.
Bouchet and Rocroi use six main clades: Contains the clades LittorinimorphaNeogastropoda and the informal group Ptenoglossa.
Both Classificqtion taxa and clades are invalid if it turns out they are polyphyleticin other words if they consist of more than one lineage. Retrieved from ” https: The paper setting out this taxonomy was published in the journal Malacologia.
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. Subsequent revisions by other authors have been made since the publication of this paper.
International Journal of Malacology. Systems of classification such as this one are primarily of value to malacologists people who study mollusks and other biologists. Whenever monophyly a single ancestry has not 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.
Classification and Nomenclator of Gastropod Families – Ph Bouchet – Google Books
This proposed classification has tried to integrate the results of recent molecular work by using unranked clades for taxa below the traditional rank of class class Gastropoda but above the rank of superfamily replacing the ranks subclass, classiifcation, order, and suborderwhile still using the traditional Linnaean ranks for superfamilies and all taxa below the rank of superfamily i.
It is worth bearing in mind however that this taxonomy is provisional: Gastropods are a taxonomic class of animals which consists of snails and slugs of every kind, from the land, from freshwaterand from saltwater. Biological classification schemes are gastropld merely a convenience, they famillies an attempt to show the actual phylogeny the evolutionary relatedness within a group of organisms.
Since the publication 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 Gastropod taxonomy Systems of animal taxonomy Malacological literature.
A clearer sense of the hierarchy of the clades can be drawn from the list immediately above this one. Wikimedia Commons has media related to Template: From Wikipedia, the free encyclopedia.
Thus a taxonomy such as this one can be seen as an attempt to elucidate part of the tree of lifea phylogenetic tree. Classification of families into subfamilies however is often not well resolved, and should be regarded as the best possible hypothesis. Contains the Caenogastropoda of uncertain systematic position, the informal group Architaenioglossa and the clades Sorbeoconcha and Hypsogastropoda. In some parts of the taxonomy, instead of “clade”, Bouchet and Rocroi labelled groupings of taxa as a “group” or an “informal group”.
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 In the past, the taxonomy of 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 anatomyincluding the structure of the radula and details of the reproductive system.
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. The clade names are not indented, but their hierarchy is indicated by the size of the font used. 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.
In the following, more detailed list, indentation is used only for the ranks of superfamily and family. The clades are unranked. Two other superfamilies are part of the clade Sigmurethra, but they are not in the limacoid clade:.
Views Read Edit View history. Contains the Palaeozoic Neritomorpha of uncertain position and the clades Cyrtoneritimorpha and Cycloneritimorpha. In this taxonomy valid families are recognized. Strong in Malacologia,61 1—2: