Paradrillia
Paradrillia is a genus of sea snails, marine gastropod mollusks in the family Horaiclavidae.

E.A. Smith · Public Domain · via Wikipedia/Commons. May be a photograph of a specimen, or an artist’s reconstruction — an interpretation of a skeleton, since colour and soft tissue are almost never preserved.
On record
Recorded, not inferred- Sits inside
- HoraiclavidaePBDB
- Diet
- carnivorePBDB, for Conoidea
- Life habit
- epifaunalPBDB, for Conoidea
- Motility
- actively mobilePBDB, for Conoidea
- Vision
- limitedPBDB, for Gastropoda
Time the record covers
At least 37 million years on record.
The record covers at least 37.71 Mya to 129 ka. No occurrence read is dated outside 48.07 Mya to 11.7 ka.
8 occurrences of Paradrillia on record, most of them in the Miocene. The Paleobiology Database records this as a living group. Bar height is expected occurrences, not a count: each fossil is spread across the span it is dated to, so a tall narrow bar means tight dating and a low wide one means loose.
When
8 occurrences- Eocene13%
- Miocene38%
- Pliocene13%
- Pleistocene38%
These are dates about fossils, not the animal: the record can only begin after it arose and end before it died out, so either end may reach further. Shares are expected occurrences: a fossil dated to a span is counted partly in each period it straddles. More on what this infers.
Found in
6 formations
- Cabatuan Formation1
- Rifle Butts Formation · Kaierero Group1
- Chengapara Formation1
- Rembang Formation1
- Nakasi Formation1
- Sakishima Formation1
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The named rock units Paradrillia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.
Paradrillia and its relatives
MioceneWhere Paradrillia and its relatives were recorded in the Miocene.
Found in the same rock
299 taxa- Astralium2 sites
- Inquisitor2 sites
- Myurella2 sites
- Rhinoclavis (Proclava)2 sites
- Terebra2 sites
- Vexillum (Costellaria)2 sites
- Acar plicata1 site
- Acmaea1 site
- Acrosterigma (Vasticardium)1 site
- Actaeopyramis1 site
- Acteocina1 site
- Alocospira1 site
- Alvenius ojianus1 site
- Amusium hulshofi1 site
- Anachis (Zafra)1 site
- Anadara (Anadara)1 site
- Anadara (Anadara) tambacana1 site
- Anadara (Cunearca) ferruginea1 site
- Anadara (Cunearca) pilula1 site
- Anadara (Mabellarca)1 site
- Anadara (Tegillarca) granosa1 site
- Anazola1 site
- Ancilla (Sparella) rembangensis1 site
- Anisodonta1 site
The Paleobiology Database records 3 sites for Paradrillia, and this reads all of them. The number is how many of those sites it was catalogued from too. The 24 sharing the most are listed.
This is not a list of everything alive at the time. It is only what has come out of the same ground as this animal and been written down.
Entered from
7 references- Skwarko, 19942
- An Early Pleistocene molluscan assemblage from Fiji: gastropod faunal composition, paleoecology and biogeography1
- Miocene Molluscan biosratigraphy of the Garo Hills, Meghalaya, India1
- Pleistocene molluscan fauna of the Sakishima Formation, Shima Peninsula, central Japan1
- Neogene gastropods from Panay Island, the Philippines1
- Tertiary and Quaternary Gastropoda of Okinawa: A comparison of the late Miocene, Pliocene, and Pleistocene Gastropoda of Okinawa with related faunas of East Asia together with a resume of the geological setting of the fossiliferous deposits1
- The Geology of the Waitaki Subdivision1
Each of the 8 occurrences read was entered from one of these publications, ordered by how many each accounts for. This is not a search for papers mentioning the name. Entries link to doi.org where the Paleobiology Database holds an identifier, and to its own record where it does not. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content1
Picture of Paradrillia
- Source
- Wikipedia/Commons
- Credit
- E.A. Smith
- Licence
- Public Domain
- Commercial use
- the licence allows it
No 3D scan of Paradrillia was found in MorphoSource and Sketchfab.
Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.
The description on this site
- Source
- Wikipedia, “Paradrillia”
- Licence
- CC BY-SA 4.0
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itHoraiclavidae through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Makiyama 1940