Zyzzyxdonta alata: Difference between revisions
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{{taxobox |
{{taxobox |
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| name = ''Zyzzyxdonta'' |
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| image = |
| image = |
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| image_caption = |
| image_caption = |
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| regnum = [[Animal]]ia |
| regnum = [[Animal]]ia |
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| phylum = [[Mollusca]] |
| phylum = [[Mollusca]] |
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| classis = [[Gastropoda]] |
| classis = [[Gastropoda]] |
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| unranked_familia = clade [[Heterobranchia]] |
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informal group [[Pulmonata]]<br/> |
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clade [[Eupulmonata]]<br/> |
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informal group [[Sigmurethra]] |
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| superfamilia = [[Punctoidea]] |
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| familia = [[Endodontidae]] |
| familia = [[Endodontidae]] |
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| genus = '''''Zyzzyxdonta''''' |
| genus = '''''Zyzzyxdonta''''' |
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| species = '''''Z. alata''''' |
| species = '''''Z. alata''''' |
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| binomial = ''Zyzzyxdonta alata'' |
| binomial = ''Zyzzyxdonta alata'' |
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| binomial_authority = Solem, 1976 |
| binomial_authority = [[Alan Solem|Solem]], 1976 |
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These snails live in the [[Pacific]] islands of [[Palau]] and [[Fiji]]. |
These snails live in the [[Pacific]] islands of [[Palau]] and [[Fiji]]. |
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== |
==Description== |
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The [[Gastropod shell|shell]] of ''Zyzzyxdonta alata'' has apical sculpture typical of the [[Endodontidae]]. The postnuclear whorls have widely spaced radial ribs which protrude into hollow, winglike structures at the carinated periphery. |
The [[Gastropod shell|shell]] of ''Zyzzyxdonta alata'' has apical sculpture typical of the [[Endodontidae]]. The postnuclear whorls have widely spaced radial ribs which protrude into hollow, winglike structures at the carinated periphery. |
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There are about 5 [[Whorl (mollusc)|whorls]] that are rather loosely coiled. The [[Apex (mollusc)|apex]] is flat, but the [[Spire (mollusc)|spire]] is slightly elevated. |
There are about 5 [[Whorl (mollusc)|whorls]] that are rather loosely coiled. The [[Apex (mollusc)|apex]] is flat, but the [[Spire (mollusc)|spire]] is slightly elevated. |
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The [[body whorl]] has a protruded, keeled periphery, not descending more rapidly, with a distinct subperipheral sulcus. The [[Umbilicus (mollusk)|umbilicus]] is widely open and U-shaped. The last whorl does not decoil as rapidly. The [[Aperture (mollusc)|apertural]] barriers consist of three parietals, a single [[Columella (gastropod)|columellar]] one that slants downwards, and three long palatals. All barriers have large, swollen and serrated beads above them<ref>Solem |
The [[body whorl]] has a protruded, keeled periphery, not descending more rapidly, with a distinct subperipheral sulcus. The [[Umbilicus (mollusk)|umbilicus]] is widely open and U-shaped. The last whorl does not decoil as rapidly. The [[Aperture (mollusc)|apertural]] barriers consist of three parietals, a single [[Columella (gastropod)|columellar]] one that slants downwards, and three long palatals. All barriers have large, swollen and serrated beads above them.<ref>Solem A. (1976) "Endodontoid land snails from Pacific islands (Mollusca: Pulmonata: Sigmurethra). Part I. Family Endodontidae". Field Museum of Natural History, Chicago.</ref>. |
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== See also == |
== See also == |
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Revision as of 23:50, 27 October 2009
| Zyzzyxdonta alata | |
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| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Class: | |
| Superfamily: | |
| (unranked): | clade Heterobranchia
informal group Pulmonata |
| Family: | |
| Genus: | Zyzzyxdonta
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| Species: | Z. alata
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| Binomial name | |
| Zyzzyxdonta alata Solem, 1976
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Zyzzyxdonta alata is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Endodontidae.
This is the only species in the genus Zyzzyxdonta. The genus was named Zyzzyxdonta because it has many features that are the opposite to the genus Aaadonta. The name is the last word in many species dictionaries.
These snails live in the Pacific islands of Palau and Fiji.
Description
The shell of Zyzzyxdonta alata has apical sculpture typical of the Endodontidae. The postnuclear whorls have widely spaced radial ribs which protrude into hollow, winglike structures at the carinated periphery.
There are about 5 whorls that are rather loosely coiled. The apex is flat, but the spire is slightly elevated.
The body whorl has a protruded, keeled periphery, not descending more rapidly, with a distinct subperipheral sulcus. The umbilicus is widely open and U-shaped. The last whorl does not decoil as rapidly. The apertural barriers consist of three parietals, a single columellar one that slants downwards, and three long palatals. All barriers have large, swollen and serrated beads above them.[1].
See also
References
- ^ Solem A. (1976) "Endodontoid land snails from Pacific islands (Mollusca: Pulmonata: Sigmurethra). Part I. Family Endodontidae". Field Museum of Natural History, Chicago.
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