Biology:Heterocithara granolirata
| Heterocithara granolirata | |
|---|---|
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| Holotype from Auckland War Memorial Museum | |
Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Neogastropoda |
| Family: | Mangeliidae |
| Genus: | Heterocithara |
| Species: | †H. granolirata
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| Binomial name | |
| †Heterocithara granolirata (A. W. B. Powell, 1944)
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| Synonyms[1] | |
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Heterocithara granolirata is an extinct species of sea snail, a marine gastropod mollusc in the family Mangeliidae.[1] Fossils of the species date to the middle Miocene, and occurs in the strata of the Port Phillip Basin of Victoria, Australia.
Description
In the original description, Powell described the species as follows:
Small, narrowly fusiform, with medial, sharply angulate periphery. Sculptured with strong, narrowly rounded axials, narrow, sharply raised spirals, the latter undulating over the axials, and dense interstitial granular lirations. Protoconch small, globular, of two smooth whorls, the second subangulate. Spire-whorls with 7 lirations on the shoulder, 3-4 spiral cords from peripheral angle to lower suture, the peripheral cord being much the strongest. Body-whorl with about 19 primary cords. Granular lirations 2-4 per interspace. Axials strong, undiminished over shoulder and extending half way across base, 13 per whorl. Labial varix heavily rounded. Sinus broad and shallow. Very slight parietal callus pad. No apertural lirations.[2]
The holotype of the species measures 6.2 mm (0.24 in) in height and 2.75 mm (0.108 in) in diameter.[2]
Taxonomy
The species was first described by A.W.B. Powell in 1944, using the name Etrema granolirata.[2] It was moved to the genus Heterocithara in 1988.[3] The holotype was collected from Balcombe Bay, Mornington,[4] Victoria at an unknown date prior to 1944, and is held by the Auckland War Memorial Museum.[5][6]
Distribution
This extinct marine species dates to the middle Miocene, and occurs in the strata of the Port Phillip Basin of Victoria, Australia, from the Gellibrand Formation.[5][7]
References
- ↑ 1.0 1.1 Heterocithara granolirata (A. W. B. Powell, 1944) †. 18 November 2025. Retrieved through: World Register of Marine Species.
- ↑ 2.0 2.1 2.2 , Wikidata Q58676624
- ↑ Maxwell, Phillip A. (1988). "Late Miocene deep-water mollusca from the stillwater mudstone at Greymouth, Westland, New Zealand: palaeoecology and systematics.". Paleontological Bulletin 55: 77.
- ↑ , Wikidata Q56194898
- ↑ 5.0 5.1 , Wikidata Q135397912
- ↑ "Heterocithara granolirata". Auckland War Memorial Museum. https://www.aucklandmuseum.com/discover/collections/record/209041.
- ↑ , Wikidata Q136396722
External links
Wikidata ☰ Q10295280 entry
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