Antiplanes
Antiplanes is a genus of sea snails, marine gastropod mollusks in the family Pseudomelatomidae.

Smithsonian institution · CC0 · 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
- PseudomelatomidaePBDB
- Diet
- carnivorePBDB, for Conoidea
- Life habit
- epifaunalPBDB, for Conoidea
- Motility
- actively mobilePBDB, for Conoidea
- Vision
- limitedPBDB, for Gastropoda
Time the record covers
At least 22 million years on record.
The record covers at least 23.04 Mya to 129 ka. No occurrence read is dated outside 27.3 Mya to 11.7 ka.
84 occurrences of Antiplanes on record, most of them in the Pleistocene. 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
84 occurrences- Oligocene7%
- Miocene4%
- Pliocene30%
- Pleistocene60%
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
20 formations
- Timms Point Silt Formation17
- Palos Verdes Sand Formation9
- San Pedro Sand Formation6
- Fernando Formation5
- Lomita Marl Formation5
- Pico Formation4
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The named rock units Antiplanes has been recovered from, largest first. Drawn where the rock is now, not where it formed. 15 occurrences have no formation on record, which is common for older literature.
Antiplanes and its relatives
PleistoceneWhere Antiplanes and its relatives were recorded in the Pleistocene.
Found in the same rock
1,423 taxa- Californiconus californicus25 sites
- Turritella cooperi25 sites
- Caesia perpinguis23 sites
- Glossaulax reclusiana22 sites
- Mitrella gausapata22 sites
- Saccella taphria22 sites
- Dentalium neohexagonum21 sites
- Solen sicarius20 sites
- Thylacodes squamigerus20 sites
- Callianax biplicata19 sites
- Calliostoma canaliculatum19 sites
- Fusitriton oregonensis19 sites
- Lucinoma annulata19 sites
- Mitrella tuberosa19 sites
- Acteocina culcitella18 sites
- Caesia fossatus18 sites
- Epilucina californica18 sites
- Lirobittium rugatum18 sites
- Callianax pedroana17 sites
- Dallocardia quadragenarium17 sites
- Leukoma staminea17 sites
- Saxidomus nuttalli17 sites
- Spirotropis (Antiplanes) perversa17 sites
- Cryptonatica affinis16 sites
The Paleobiology Database records 45 sites for Antiplanes, 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
36 references- The cool-water Timms Point Pleistocene horizon at San Pedro, California16
- The Paleontology and Stratigraphy of the Marine Pliocene and Pleistocene of San Pedro, California10
- Catalogue of the Marine Pliocene and Pleistocene Mollusca of California5
- Geology and Paleontology of a Portion of Los Angeles, California4
- Tertiary faunal horizons of western Washington4
- Warm-water influx into Japan Sea in the middle Pliocene - Molluscan faunas from the Tentokuji FOrmation around Mt. Taihei in Akita Prefecture3
- Pectinids from the Taga Group of the Joban Coalfield3
- Late Pleistocene invertebrates of the Newport Bay area, California3
- The marine Tertiary stratigraphy of the North Pacific coast of America3
- Molluscan fossils from the Kitakanegasawa Formation in Aomori Prefecture, Japan, with remarks on the northern limit of the Tsushima Warm Current during the late Pliocene2
- Geology of southeastern Ventura basin, Los Angeles County, California2
- Paleontology and stratigraphy of some marine Pleistocene deposits in northwest Los Angeles Basin, California2
Each of the 84 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. 24 further references are not listed. 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 Antiplanes
- Source
- Wikipedia/Commons
- Credit
- Smithsonian institution
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Antiplanes was found in Sketchfab.
Smithsonian Open Access and MorphoSource were 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, “Antiplanes”
- 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 itPseudomelatomidae through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Dall 1902)