Callistochiton palmulatus

via iDigBio · CC BY-NC-SA · 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- Also called
- palmate chitonPBDB
- Sits inside
- CallistochitonPBDB
- 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 least 2.4 million years on record.
The record covers at least 2.58 Mya to 129 ka. No occurrence read is dated outside 5.333 Mya to 0 Mya.
23 occurrences of Callistochiton palmulatus 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
23 occurrences- Pliocene19%
- Pleistocene81%
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
8 formations
- Pico Formation3
- Fernando Formation2
- Palos Verdes Formation2
- Discovery Point Formation1
- Quaternary terrace Formation1
- Lomita Marl Formation1
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The named rock units Callistochiton palmulatus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 11 occurrences have no formation on record, which is common for older literature.
Callistochiton palmulatus and its relatives
PleistoceneWhere Callistochiton palmulatus and its relatives were recorded in the Pleistocene.
Found in the same rock
894 taxa- Thylacodes squamigerus13 sites
- Crepidula nummaria12 sites
- Dentalium neohexagonum12 sites
- Seila montereyensis12 sites
- Californiconus californicus11 sites
- Callianax biplicata11 sites
- Epilucina californica11 sites
- Mitrella tuberosa11 sites
- Turritella cooperi11 sites
- Caesia fossatus10 sites
- Caesia perpinguis10 sites
- Calliostoma canaliculatum10 sites
- Crepipatella lingulata10 sites
- Cryptomya californica10 sites
- Fissurella volcano10 sites
- Glossaulax reclusiana10 sites
- Hipponix tumens10 sites
- Littorina (Littorina) scutulata10 sites
- Melanella thersites10 sites
- Pyrgiscus tenuiculus10 sites
- Acteocina culcitella9 sites
- Alia carinata9 sites
- Chama arcana9 sites
- Crepidula onyx9 sites
The Paleobiology Database records 18 sites for Callistochiton palmulatus, 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
13 references- On the reconciliation of biostratigraphy and strontium isotope stratigraphy of three southern Californian Plio-Pleistocene formations3
- Late Pleistocene molluscan faunas from upper terraces of the Palos Verdes Hills, California3
- Late Pleistocene invertebrates of the Newport Bay area, California3
- Invertebrate megafossils of Pleistocene (Sangamon Interglacial) age from Isla de Guadalupe, Baja California, Mexico2
- Late Pleistocene faunas from the northwestern coast of Baja California, Mexico2
- Additional Notes on the Pliocene Molluscan Fauna of Los Angeles City2
- Fossil chitons of Western North America2
- Pleistocene molluscan notes, 3. Rocky coast faunule, Bahia San Quintin, Mexico1
- Paleoecologic molluscan geography of the Californian Pleistocene1
- Pleistocene invertebrates from Punta China, Baja California, Mexico, with remarks on the composition of the Pacific coast Quaternary faunas1
- Upper Pleistocene Mollusca from Potrero Canyon, Pacific Palisades, California1
- Report on Pleistocene Molluscan Fauna at Capistrano Beach, Orange County, Calif1
Each of the 23 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. 1 further reference is 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 Callistochiton palmulatus
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC BY-NC-SA
- Commercial use
- the licence does not allow it
No 3D scan of Callistochiton palmulatus 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 itCallistochiton through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Dall 1879