Pseudoperissolax

via iDigBio · via iDigBio. 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
- MuricinaePBDB
- Diet
- carnivorePBDB, for Muricidae
- Life habit
- epifaunalPBDB, for Muricidae
- Motility
- actively mobilePBDB, for Muricidae
- Vision
- limitedPBDB, for Gastropoda
Time the record covers
At least 34 million years on record.
The record covers at least 61.66 Mya to 27.3 Mya. No occurrence read is dated outside 66 Mya to 23.04 Mya.
78 occurrences of Pseudoperissolax on record, most of them in the Eocene. 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
78 occurrencesThese 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
21 formations
- Santa Susana Formation12
- Martinez Formation10
- Tejon Formation10
- Scripps Formation · La Jolla Group7
- Blakeley Formation5
- Okinoshima Formation4
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The named rock units Pseudoperissolax has been recovered from, largest first. Drawn where the rock is now, not where it formed. 4 occurrences have no formation on record, which is common for older literature.
Pseudoperissolax and its relatives
EoceneWhere Pseudoperissolax and its relatives were recorded in the Eocene.
Found in the same rock
751 taxa- Polinices hornii22 sites
- Nemocardium (Nemocardium) linteum21 sites
- Turritella infragranulata pachecoensis21 sites
- Calyptraea diegoana18 sites
- Ficopsis remondii18 sites
- Crassatella uvasana17 sites
- Cucullaea mathewsonii17 sites
- Dentalium cooperi17 sites
- Amauropsis martinezensis13 sites
- Scaphander (Mirascapha) costatus13 sites
- Caryocorbula parilis12 sites
- Gari (Gobraeus) hornii12 sites
- Nuculana (Saccella) gabbii12 sites
- Acila (Truncacila) decisa11 sites
- Polinices (Euspira) nuciformis11 sites
- Tejonia moragai11 sites
- Brachysphingus sinuatus10 sites
- Glycymerita major10 sites
- Schedocardia brewerii10 sites
- Tellina (Saulella) undulifera10 sites
- Amaurellina moragai9 sites
- Brachidontes (Brachidontes) cowlitzensis9 sites
- Callista (Costacallista) hornii9 sites
- Crassatella9 sites
The Paleobiology Database records 72 sites for Pseudoperissolax, 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
25 references- Eocene molluscan stages and their correlation, San Diego area, California10
- A contribution to the paleontology of the Martinez Eocene of California10
- Stratigraphy and Mollusca of the Eocene of western Oregon7
- Fauna of the Martinez Eocene of California6
- Geology of the coast ranges immediately north of the San Francisco Bay region, California5
- Northeast Pacific record of the Paleogene genus Pseudoperissolax (Neogastropoda: Muricidae: Muricinae) and its paleobiogeography4
- Fauna of the Type Tejon: Its relation to the Cowlitz Phase of the Tejon Group of Washington4
- Stratigraphy and sedimentology of the Eocene Tejon Formation, western Tehachapi and San Emigdio mountains, California3
- Geology of the Northern Santa Ana Mountains, California3
- Paleogene and Early Neogene molluscan faunae in West Japan3
- An Eocene Nautiloid from Kyushu, Japan3
- Megafaunal zones of the Oligocene of northwestern Washington3
Each of the 78 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. 13 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 Pseudoperissolax
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
No 3D scan of Pseudoperissolax 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.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itMuricinae through timeFormations of the EoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Clark 1918)