| Penion proavitus Temporal range: Paleocene, | |
|---|---|
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Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Neogastropoda |
| Family: | Austrosiphonidae |
| Genus: | Penion |
| Species: | P. proavitus |
| Binomial name | |
| Penion proavitus | |
| Synonyms | |
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 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]
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]
Conoidea is a superfamily of predatory sea snails, marine gastropod mollusks within the suborder Hypsogastropoda. This superfamily is a very large group of marine mollusks, estimated at about 340 recent valid genera and subgenera, and considered by one authority to contain 4,000 named living species.
Penion cuvierianus is a species of very large predatory sea snail or whelk, commonly called the flaring penion, a marine gastropod mollusc in the family Austrosiphonidae.
Alcithoe is a genus of large sea snails, marine gastropod molluscs in the family Volutidae, the volutes.
Penion sulcatus is a species of medium-to-large predatory marine snail or whelk, commonly called the northern siphon whelk or kākara nui in Māori, belonging to the whelk family Austrosiphonidae.
Turritellidae, with the common name "tower shells" or "tower snails", is a taxonomic family of small- to medium-sized sea snails, marine gastropod molluscs in the Sorbeoconcha clade.
Naticidae, common name moon snails or necklace shells, is a family of medium to large-sized predatory sea snails, marine gastropod molluscs in the clade Littorinimorpha. The shells of the species in this family are mostly globular in shape.
Penion is a genus of large marine snails, commonly known as siphon whelks, classified within the mollusc family Austrosiphonidae.
Antarctoneptunea benthicola is a species of small-to-medium-sized predatory sea snail or whelk, a marine gastropod mollusc in the family Austrosiphonidae.
Penion chathamensis is a species of very large predatory sea snail or whelk, a marine gastropod mollusc in the family Austrosiphonidae.
Penion ormesi is a species of very large predatory sea snail or whelk, a marine gastropod mollusc in the family Austrosiphonidae.
Cominella is a genus of carnivorous sea snails, a marine gastropod mollusc in the family Cominellidae.
Buccinulum is a genus of sea snails, marine gastropod molluscs in the whelk family Tudiclidae.
Aeneator is a genus of sea snails, marine gastropod molluscs in the whelk family Tudiclidae.
Marshallena is a genus of sea snails, marine gastropod mollusks in the family Marshallenidae.
Antarctoneptunea is a genus of sea snails, marine gastropod mollusks in the whelk family Austrosiphonidae.
Austrofusus is a genus of medium-sized sea snails or whelks, marine gastropod molluscs in the family Buccinidae, the true whelks.
Galeodea is a genus of large sea snails, marine gastropod mollusks in the subfamily Cassinae of the family Cassidae.
Kelletia is a genus of large sea snails, whelks, a marine gastropod molluscs in the whelk family Austrosiphonidae.
Penion marwicki is an extinct species of marine snail or whelk, belonging to the true whelk family Austrosiphonidae.
Penion crawfordi is an extinct species of marine snail or whelk, belonging to the true whelk family Austrosiphonidae.
