Yochelcionella
| Yochelcionella Temporal range:
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| Drawing of a reconstruction of Yochelcionella cyrano as a snail
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | †Helcionelloida |
| Order: | † Helcionelliformes
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| Family: | †Yochelcionellidae |
| Genus: | †Yochelcionella Runegar & Pojeta, 1974 |
| Species | |
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See text. | |
Yochelcionella is an extinct
.Yochelcionella is the
Yochelcionellidae.[1]
Description
This genus of molluscs possessed shells which were shaped like curved caps, with an
exhaust pipe shaped "snorkel" emanating underneath where the apex (point of the shell) curves over. It is believed that the "snorkel" was used in breathing, allowing waste water to flow away from the gills
.
Taxonomy
When they were first discovered, they were originally thought to be
scaphopods.[3] It has also been interpreted as a precursor to the cephalopod funnel[4] or siphuncle.[5]
The
Yochelcionellidae within the superfamilia Yochelcionelloidea within the Paleozoic molluscs of uncertain position within Mollusca (Gastropoda or Monoplacophora)
.
For an alternate 2007-2007 taxonomy by P. Yu. Parkhae see Helcionelloida.
Species
Species in the genus Yochelcionella include:
- Yochelcionella americana Runnegar & Pojeta, 1980[6]
- Yochelcionella angustiplicata
- Yochelcionella chinensis Pei, 1985[6]
- Yochelcionella crassa Zhegallo in Esakova et Zhegallo, 1996
- Yochelcionella cyrano Runnegar and Pojeta 1974 type species. Its type locality is ANU Collection 10352, 16 km northeast of Mootwingee Aboriginal Site, which is in a Solvan carbonate limestone in the Coonigan Formation of Australia..
- Yochelcionella daleki
- Yochelcionella erecta (Walcott, 1891)[6]
- Yochelcionella gracilis Atkins & Peel, 2004[6]
- Yochelcionella greenlandica Atkins & Peel, 2004[6]
- Yochelcionella ostentata
- Yochelcionella saginata Vendrasco et al., 2010[7]
- Yochelcionella snorkorum Vendrasco et al., 2010[7]
References
- ^
- )
- .
- ^ JELL, P. A. (1976). "Mollusca". McGraw-Hill Encyclopedia of Science and Technology, Yearbook 1976. pp. 269–71.
- ^ Pojeta, J. Jr (1980). "Molluscan phylogeny. Tulane Studies in Geology and Paleontology". 16: 55–80.
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