WoRMS taxon details
Monoplacophora
Order Tryblidiida
marine
Wenz W. 1940. Ursprung und frühe Stammesgeschichte der Gastropoden. <i>Archiv für Molluskenkunde</i> 72: 1-110. [details]
MolluscaBase eds. (2021). MolluscaBase. Monoplacophora. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=415 on 2021-01-18
Date
action
by
2004-12-21 15:54:05Z
created
db_admin
The webpage text is licensed under a Creative Commons Attribution 4.0 License
original description
Wenz W. 1940. Ursprung und frühe Stammesgeschichte der Gastropoden. <i>Archiv für Molluskenkunde</i> 72: 1-110. [details]
basis of record An outline for the classification of Phylum Mollusca in taxonomic databases [report elaborated by WoRMS editors for internal use, june 2010] [details]
basis of record An outline for the classification of Phylum Mollusca in taxonomic databases [report elaborated by WoRMS editors for internal use, june 2010] [details]





From editor or global species database
Classification The only classification problem with modern monoplacophorans is the discussion around using Monoplacophora Odhner, 1940 vs. Tryblidiida. Monoplacophora sl. as defined in Runnegar & Jell (1976) would include three orders among which Tryblidiida. Problems arise from the ambiguous position of some paleozoic fossil taxa which could be monoplacophorans or gastropods, or (worse) stem-group gastropods derived from monoplacophorans, thus making Monoplacophora paraphyletic. Preference for the name Tryblidiida follows Waller's (1998) conclusion that these are the sister-group to all other Conchifera, thus escaping being paraphyletic. Giribet et al. (2006: Proceedings of the National Academy of Sciences 103, 7723-7728) claimed that the monoplacophoran Laevipilina is recovered within a branch containing polyplacophoran taxa in an analysis including several nuclear and mitochondrial sequences. As mentioned above, this result based on a very small specimen is ignored in the classification draft until further confirmed. [details]
Language | Name | |
---|---|---|
Dutch | mutsweekdierenmutsslakken | [details] |
English | monoplacophorans | [details] |
Japanese | 単板綱 | [details] |