Stenoplax fallax

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
- StenoplaxPBDB
- Diet
- grazerPBDB, for Polyplacophora
- Life habit
- epifaunalPBDB, for Polyplacophora
- Motility
- facultatively mobile, attachedPBDB, for Polyplacophora
- Vision
- limitedPBDB, for Polyplacophora
- Environment
- marine,brackishPBDB, for Polyplacophora
Time the record covers
At most 2.6 million years on record.
Every occurrence read is dated to somewhere between 2.58 Mya and 11.7 ka, and nothing in the dating separates them, so that window is what the record shows rather than a span.
2 occurrences of Stenoplax fallax on record, most of them in the Pleistocene. 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
2 occurrences- Pleistocene100%
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
1 formation
Loading coastlines…
The named rock units Stenoplax fallax has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.
Stenoplax fallax and its relatives
PleistoceneWhere Stenoplax fallax and its relatives were recorded in the Pleistocene.
Found in the same rock
270 taxa- Callistochiton crassicostatus2 sites
- Callistochiton palmulatus mirabilis2 sites
- Cancer productus2 sites
- Chlamys rubida2 sites
- Cryptochiton stelleri2 sites
- Hemigrapsus nudus2 sites
- Hemigrapsus oregonensis2 sites
- Lepidozona cooperi2 sites
- Lophopanopeus diegensis2 sites
- Lophopanopeus leucomanus2 sites
- Mesorhoea idae2 sites
- Metacarcinus gracilis2 sites
- Mopalia acuta2 sites
- Mopalia muscosa2 sites
- Pagurus granosimanus2 sites
- Pugettia producta2 sites
- Pugettia richii2 sites
- Randallia ornata2 sites
- Romaleon jordani2 sites
- Aartsenia canfieldi1 site
- Aartsenia sanesia1 site
- Aartsenia timessa1 site
- Acila (Truncacila) castrensis1 site
- Acmaea (Collisella) scutum patina1 site
The Paleobiology Database records 2 sites for Stenoplax fallax, 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
2 references- The fossils of the Lower San Pedro fauna of the Nob Hill cut, San Pedro, California1
- Fossil chitons of Western North America1
Each of the 2 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 Stenoplax fallax
- 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 Stenoplax fallax 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.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itStenoplax through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Carpenter 1892)