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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This system supersedes the system of Ponder and Lindberg from International Journal of Malacology.

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. Bouchet and Rocroi use six main clades: By using this site, you agree gastropd the Terms of Use and Privacy Policy.

Classification and Nomenclator of Gastropod Families

Contains the subclades ElasmognathaOrthurethra and the informal group Sigmurethra. 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.

In the following, more detailed list, indentation is used only for the ranks of superfamily and family. 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 This page was last edited on 25 Julyat Views Read Edit View history. 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, superorder, order, and suborderwhile still using the traditional Linnaean ranks for superfamilies and all taxa below the rank of superfamily i.

Here the information is displayed in the form of a cladogram an evolutionary tree of descent.

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Retrieved from ” https: Thus a taxonomy such as this one can be seen as an attempt to elucidate part of the tree of lifea phylogenetic tree. They have adopted again the common additional ranks above superfamily: A clearer sense of the hierarchy of the clades can be drawn from the list immediately above this one. Biological classification schemes are not merely a convenience, they are an attempt to show the actual phylogeny the evolutionary relatedness within a group of organisms.

This shift in emphasis has meant that the newer taxa and their hierarchy are subject to debate, a debate that is not likely to be resolved soon. Strong in Malacologia,61 1—2: In some parts nomenclatoe the taxonomy, instead of “clade”, Bouchet and Rocroi labelled groupings of taxa as a “group” or an “informal group”.

Classification and nomenclator of gastropod families.

This cladogram is based on the following information. 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 gastropo taxon, its nomenclatural status, and its validity under the rules of the ICZN.

The clades are unranked. Contains the Palaeozoic Neritomorpha of uncertain position and the clades Cyrtoneritimorpha and Cycloneritimorpha.

Taxonomy of the Gastropoda (Bouchet & Rocroi, ) – Wikipedia

The paper setting out this taxonomy was published in the journal Malacologia. Wikimedia Commons has media related to Template: The clade names are not indented, but their hierarchy is indicated by the size of the font used.

In contrast, most of the previous overall taxonomic schemes for gastropods relied on morphological features to classify these tastropod, and used taxon ranks such as ordersuperorder and suborder, which are typical of classifications that are still inspired by Linnaean taxonomy. 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.

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Both Linnaean taxa and clades nomencator invalid if it turns out they are polyphyleticin other words if they consist of more than one lineage. The first three of these major clades have no nesting clades within them: The clsasification have been given names which claszification similar to, or in some cases the same as, traditional Linnaean names for taxa above the level of superfamily.

From Wikipedia, the free encyclopedia.

Contains the clades LittorinimorphaNeogastropoda and the informal group Ptenoglossa. 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. Further research will eventually resolve these questions. clazsification

Classification and Nomenclator of Gastropod Families (Paperback)

The system famioies both living and extinct groups, as well as some fossils whose classification as gastropods is uncertain. 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.

Gastropods are a taxonomic class of animals which consists of snails and slugs of every kind, from the land, from freshwaterand from saltwater. Systems of classification such as this one are primarily of value to malacologists people who study mollusks and other biologists. Within the Caenogastropoda there is one extra clade.

The list format used below makes clear which taxa are informal groups rather than clades:. Subsequent revisions by other authors have been made since the publication of this paper.