Nucinellidae Vokes 1956
- 1. Jackson School of Geosciences, University of Texas, Austin, TX 78712, USA; & Earth Sciences, Plymouth University, Plymouth, PL 4 8 AA, UK; & Department of Earth Sciences, Natural History Museum, London, SW 7 5 BD, UK;
- 2. Earth Sciences, Plymouth University, Plymouth, PL 4 8 AA, UK; & Department of Geology, University of Georgia, Athens, GA 30602, USA
- 3. Department of Earth Sciences, Natural History Museum, London, SW 7 5 BD, UK;
Description
Family Nucinellidae Vokes, 1956
Diagnosis. Shell nuculoid, obliquely oval, higher than long, monomyarian with anterior adductor muscle scar only. Hinge with subumbonal taxodont teeth and single elongate lateral tooth on the anterior dorsal margin. Ligament mostly opisthodetic, wholly external or in a sunken resilifer.
Remarks. Although living nucinellids are sometimes classified in the family Manzanellidae, which extends back into the Permian (e.g. Coan & Valentich-Scott 2012), Oliver & Taylor (2012) argued that the Nucinellidae and Manzanellidae should be separated on morphological grounds and their conclusions are followed here. Manzanella, the type genus of Manzanellidae, is dimyarian and subcircular in outline, with its taxodont teeth lying posterior to the beak. In contrast, Nucinella and Huxleyia (i.e. the Nucinellidae) are both monomyarian and elliptical, with their teeth positioned anterior to the beak (Oliver & Taylor 2012).
Notes
Files
Files
(1.3 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:78750f92597f6d384f279362f30f45f5
|
1.3 kB | Download |
System files
(8.1 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:3920f61fa7002eebd0ff68b03ce662c7
|
8.1 kB | Download |
Linked records
Additional details
Identifiers
Biodiversity
- Family
- Nucinellidae
- Kingdom
- Animalia
- Order
- Solemyida
- Phylum
- Mollusca
- Scientific name authorship
- Vokes
- Taxon rank
- family
- Taxonomic concept label
- Nucinellidae Vokes, 1956 sec. Foster, Danise & Twitchett, 2017
References
- Coan, E. V. & Valentich-Scott, P. 2012. Bivalve seashells of tropical West America. Marine bivalve mollusks from Baja California to northern Peru. Santa Barbara Museum of Natural History Monographs 6, Santa Barbara, CA, 1258 pp.