WoRMS taxon details
Monoplacophora
- Order Neopilinida
- Order Monoplacophora incertae sedis (temporary name)
marine, brackish, fresh, terrestrial
recent + fossil
Wenz W. 1940. Ursprung und frühe Stammesgeschichte der Gastropoden. <i>Archiv für Molluskenkunde</i> 72: 1-110. [details]
MolluscaBase eds. (2024). MolluscaBase. Monoplacophora. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=415 on 2024-10-11
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2004-12-21 15:54:05Z
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original description
Wenz W. 1940. Ursprung und frühe Stammesgeschichte der Gastropoden. <i>Archiv für Molluskenkunde</i> 72: 1-110. [details]
context source (PeRMS) Ramírez, R.; Paredes, C.; Arenas, J. (2003). Moluscos del Perú. <em>Revista de Biologia Tropical.</em> 51(supplement 3): 225-284. [details] Available for editors [request]
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]
context source (PeRMS) Ramírez, R.; Paredes, C.; Arenas, J. (2003). Moluscos del Perú. <em>Revista de Biologia Tropical.</em> 51(supplement 3): 225-284. [details] Available for editors [request]
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]