Evolutionary relationships of euthyneuran gastropods (Mollusca): a cladistic re-evaluation of morphological characters

  title={Evolutionary relationships of euthyneuran gastropods (Mollusca): a cladistic re-evaluation of morphological characters},
  author={Beno{\^i}t Dayrat and Simon Tillier},
  journal={Zoological Journal of the Linnean Society},
Morphological characters of the Euthyneura available from the literature were re-evaluated in terms of terminology and primary homology. A total of 77 characters and 75 taxa were retained in a data matrix. Several assumptions on character weights and types were tested. In the cladistic analyses, it appeared that the data matrix was highly homoplastic, and only robust nodes (those which were little modified by variations in weight and coding of characters) were retained in a concensus tree. The… 

New clades of euthyneuran gastropods (Mollusca) from 28S rRNA sequences.

Morphological characters which support the new clades obtained here are discussed and first molecular confirmation of monophylies of Hygrophila, including Chilina, Acteonoidea, and Sacoglossa, which include both shell-bearing species and slugs are discussed.

From sea to land and beyond – New insights into the evolution of euthyneuran Gastropoda (Mollusca)

It can be proposed for the first time that invasion of freshwater by Pulmonata is a unique evolutionary event and has taken place directly from the marine environment via an aquatic pathway.

Towards a phylogeny and evolution of Acochlidia (Mollusca: Gastropoda: Opisthobranchia)

It is concluded that the acochlidian ancestor was marine mesopsammic, and the formerly enigmatic Ganitidae, resembling sacoglossan opisthobranchs by having dagger-like rachidian radular teeth, are likely to be highly derived microhedylids.

Molecular phylogeny of the Euthyneura (Mollusca, Gastropoda) with spacial focus on Opisthobranchia as a framework for reconstruction of evolution of diet

The present study presents the currently most extensive analyses on opisthobranch phylogeny including 58 species from all major subgroups and finds Herbivory is found as the most likely ancestral diet of Euthyneura while carnivory probably evolved several times independently in different clades.

Taxonomy and Cladistic Analysis of Plakobranchidae (Gastropoda: Sacoglossa)

The monophyletic status of the genera Plakobranchus van Hasselt, Thuridilla Bergh and Elysia Risso, 1818 was fully supported by all analyses, meaning that old names might be resurrected for a better explanation of the natural history of this genus.

Molecular phylogeny of euthyneura (mollusca: gastropoda).

The monophyly of the Euthyneura (Opisthobranchia + Pulmonata) was rejected by the inclusion of the heterostrophan Pyramidella and the phylogenetic utility of two rare genomic changes is addressed.

Molecular phylogeny and evolution of Pulmonata (Mollusca: Gastropoda) on the basis of mitochondrial (16S, COI) and nuclear markers (18S, 28S): an overview

The phylogenetic relationships among the major groups of Pulmonata were studied by the information derived from a concatenated dataset consisting of mitochondrial (16S and COI) and nuclear (18S and

On the origin of Acochlidia and other enigmatic euthyneuran gastropods, with implications for the systematics of Heterobranchia

It is demonstrated that the invasion of the meiofaunal habitat has occurred several times independently in various euthyneuran taxa, leading to convergent adaptations previously misinterpreted as synapomorphies.



The Comparative Morphology, Phylogeny and Evolution of the Gastropod Family Littorinidae

  • D. Reid
  • Environmental Science, Biology
  • 1989
The cladogram is used as a basis for a new classification of the Littorinidae, in which three subfamilies and 14 monophyletic genera are recognized, and the poor fossil record of the family is reviewed, and its biogeography discussed in the light of the phylogenetic hypothesis.

Phylogeny of the Nudibranchia

More than 100 morphological, anatomical and histological characters pertaining to the Nudibranchia are discussed in the course of a phylogenetic analysis and the paraphyly of the ‘Arminoidea’ is demonstrated.

The Chromodorididae (Opisthobranchia: Mollusca) of the Indo-West Pacific: a review of the genera

A large suite of characters including features of the external shape, mantle glands, gills, foregut, jaw-plates, radula and reproductive system are used to define the genera.

Towards a phylogeny of gastropod molluscs: an analysis using morphological characters

This is one of the first attempts to use Morphological and developmental characters to assess the relationships of all major clades using parsimony methods and discusses the major monophyletic groups within gastropods.

Phylogenetic Systematics and Classification of the Sacoglossa (Mollusca, Gastropoda, Opisthobranchia)

Character analysis is performed based on anatomical information on 95 species of Sacoglossa (Mollusca, Opisthobranchia) to establish a monophyletic group and relationships among most genera included in the Placobranchoidea remain unresolved.

Origins and relationships of primitive members of the Opisthobranchia (Mollusca: Gastropoda)

An examination of possible prosobranch precursors of opisthobranchs and pulmonates suggests that archaeogastropods are poor candidates, as they lack the complex female glands which characterize all

Relationships of gymnomorph gastropods (Mollusca: gastropoda)

It is proposed to reject the Rhodopidae from the Pulmonata and to include the onchidiids and the Rathouisioidea in the order Archeopulmonata, together with the ellobiids, the otinid slug and the Amphiboloidea.

Phylogenetic relationships and generic review of the bittiinae (Prosobranchia: Cerithioidea)

Results of anatomical studies and a phylogenetic analysis using the Hennig86 and CLADOS programs, with Cerithium as an outgroup, establish monophyly for Bittiinae Cossmann and reveal six different genus-level taxa.


A cladistic analysis of the families of the Limacoidea sensu lato is given, based on a detailed consideration of all relevant characters of the genitalia, nervous system, muscle system, lung, digestive system, external morphology and shell.

The Doridacea (Opisthobranchia; Mollusca) of the Hawaiian Islands

Dorids were among the first mollusks to be recognized in the Hawaiian Islands, with twentyseven species described between 1852 and 1860.