Penion proavitus is an extinct species of marine snail or whelk, belonging to the true whelk family Austrosiphonidae.[1][2][3][4][5]
| Penion proavitus Temporal range: Paleocene,
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Neogastropoda |
| Family: | Austrosiphonidae |
| Genus: | Penion |
| Species: | P. proavitus
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| Binomial name | |
| Penion proavitus | |
| Synonyms | |
Description edit
Penion proavitus fossils are the earliest known specimens of Penion siphon whelks.[3][4] The species was medium-to-large in size.[2][5]
It is possible that fossils of Penion proavitus represent a stem lineage that was the common ancestor of Penion, Kelletia and Antarctoneptunea, instead of a species of Penion itself.[4]
Distribution edit
Fossils of Penion proavitus are found in New Zealand's South Island.[2] The species lived in the seas surrounding Zealandia between 56 and 66 million million years ago (Teurian stage).[3]
References edit
- ^ Kantor, Yuri I.; Fedosov, Alexander E.; Kosyan, Alisa R.; Puillandre, Nicolas; Sorokin, Pavel A.; Kano, Yasunori; Clark, Roger; Bouchet, Philippe (2022). "Molecular phylogeny and revised classification of the Buccinoidea (Neogastropoda)". Zoological Journal of the Linnean Society. 194 (3): 789–857. doi:10.1093/zoolinnean/zlab031.
- ^ a b c Finlay, Harold J.; Marwick, John (1937). "The Wangaloan and Associated Molluscan Faunas of Kaitangata-Green Island Subdivision". New Zealand Geological Survey Paleontological Bulletin. 15.
- ^ a b c Beu, Alan G.; Maxwell, P.A. (1990). Cenozoic Mollusca of New Zealand. New Zealand Geological Survey Bulletin. Vol. 58. Lower Hutt, New Zealand: New Zealand Department of Scientific and Industrial Research. ISSN 0114-2283.
- ^ a b c Vaux, Felix; Hills, Simon F.K.; Marshall, Bruce A.; Trewick, Steven A.; Morgan-Richards, Mary (2017). "A phylogeny of Southern Hemisphere whelks (Gastropoda: Buccinulidae) and concordance with the fossil record". Molecular Phylogenetics and Evolution. 114 (2017): 367–381. doi:10.1016/j.ympev.2017.06.018. PMID 28669812.
- ^ a b WoRMS World Register of Marine Species: Penion proavitus (Finlay & Marwick, 1937) †
External links edit
Wikimedia Commons has media related to Penion.