Crassadoma gigantea

Steve Lonhart (SIMoN / MBNMS) · Public Domain · via Wikidata/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- Also called
- giant rock-scallopPBDB
- Sits inside
- CrassadomaPBDB
- Diet
- suspension feederPBDB, for Crassadoma
- Life habit
- low-level epifaunalPBDB, for Crassadoma
- Motility
- stationary, attachedPBDB, for Crassadoma
- Vision
- limitedPBDB, for Pectinidae
- Environment
- marinePBDB, for Pectinida
Time the record covers
At least 192 million years on record.
The record covers at least 192.9 Mya to 129 ka. No occurrence read is dated outside 201.4 Mya to 0 Mya.
76 occurrences of Crassadoma gigantea 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
76 occurrences- Early Jurassic5%
- Miocene12%
- Pliocene10%
- Pleistocene73%
- Holoceneunder 1%
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
18 formations
- Palos Verdes Sand Formation11
- Unnamed Formation7
- Pancho Rico Formation3
- San Pedro Formation2
- Etchegoin Formation2
- Salada Formation1
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The named rock units Crassadoma gigantea has been recovered from, largest first. Drawn where the rock is now, not where it formed. 38 occurrences have no formation on record, which is common for older literature.
Crassadoma gigantea and its relatives
PleistoceneWhere Crassadoma gigantea and its relatives were recorded in the Pleistocene.
Found in the same rock
1,253 taxa- Californiconus californicus39 sites
- Callianax biplicata39 sites
- Leukoma staminea33 sites
- Littorina (Littorina) scutulata32 sites
- Pododesmus (Monia) macrochisma32 sites
- Diodora aspera31 sites
- Crepidula adunca30 sites
- Dentalium neohexagonum30 sites
- Epilucina californica30 sites
- Lottia scabra30 sites
- Tresus nuttallii30 sites
- Glossaulax reclusiana29 sites
- Thylacodes squamigerus29 sites
- Amphissa versicolor28 sites
- Caesia fossatus28 sites
- Mytilus californianus28 sites
- Chlorostoma funebrale26 sites
- Fissurella volcano26 sites
- Acanthinucella spirata25 sites
- Acmaea mitra25 sites
- Alia carinata25 sites
- Atrimitra idae25 sites
- Glans carpenteri25 sites
- Glycymeris septentrionalis25 sites
The Paleobiology Database records 69 sites for Crassadoma gigantea, 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
37 references- Late Pleistocene megafauna of Cayucos, California, and its zoogeographic significance9
- Geology of San Nicolas Island, California7
- The Paleontology and Stratigraphy of the Marine Pliocene and Pleistocene of San Pedro, California5
- Paleoenvironmental implications of fossiliferous Miocene and Pliocene strata on San Clemente Island, California4
- Pancho Rico Formation, Salinas Valley3
- Pleistocene invertebrates from Punta Baja, Baja California, Mexico3
- Late Pleistocene faunas from the northwestern coast of Baja California, Mexico3
- Pleistocene invertebrates from Punta China, Baja California, Mexico, with remarks on the composition of the Pacific coast Quaternary faunas3
- Tertiary and Quaternary pectens of California3
- Habitats and Sources of Pleistocene Mollusks at Torrey Pines Park, California2
- Late Pleistocene Invertebrates from Punta Cabras, Baja California, Mexico2
- Late Pleistocene invertebrates of the Newport Bay area, California2
Each of the 76 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. 25 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 content2

Picture of Crassadoma gigantea
- Source
- Wikidata/Commons
- Credit
- Steve Lonhart (SIMoN / MBNMS)
- Licence
- Public Domain
- Commercial use
- the licence allows it
CT scan
- Source
- MorphoSource
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
- Specimen
- Crassadoma gigantea · usnm:invertebrate zoology:41142
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itCrassadoma through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Gray 1825)