Cucullaea mathewsonii

via GBIF · CC BY 4.0 · via GBIF. 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
- CucullaeaPBDB
- Diet
- suspension feederPBDB, for Cucullaea
- Life habit
- infaunalPBDB, for Cucullaea
- Motility
- facultatively mobilePBDB, for Cucullaea
- Vision
- limitedPBDB, for Cucullaeidae
Time the record covers
At least 17 million years on record.
The record covers at least 66 Mya to 48.07 Mya. No occurrence read is dated outside 72.2 Mya to 37.71 Mya.
72 occurrences of Cucullaea mathewsonii on record, most of them in the Paleocene. 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
72 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
9 formations
- Santa Susana Formation34
- Martinez Formation17
- Tepetate Formation4
- Silverado Formation4
- Locatelli Formation3
- San Francisquito Formation2
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The named rock units Cucullaea mathewsonii has been recovered from, largest first. Drawn where the rock is now, not where it formed. 5 occurrences have no formation on record, which is common for older literature.
Cucullaea mathewsonii and its relatives
PaleoceneWhere Cucullaea mathewsonii and its relatives were recorded in the Paleocene.
Found in the same rock
348 taxa- Turritella infragranulata pachecoensis46 sites
- Dentalium cooperi30 sites
- Tellina (Saulella) undulifera25 sites
- Amauropsis martinezensis23 sites
- Glycymerita major18 sites
- Mesalia martinezensis18 sites
- Nemocardium (Nemocardium) linteum17 sites
- Polinices hornii16 sites
- Crassatella15 sites
- Nuculana (Saccella) gabbii15 sites
- Pseudoperissolax tricarnatus15 sites
- Flabellum cuneiforme14 sites
- Glycimeris major14 sites
- Urosyca caudata14 sites
- Brachysphingus sinuatus13 sites
- Ringicula (Ringicula) pinguis13 sites
- Scaphander (Mirascapha) costatus13 sites
- Palaeopsammia zitteli12 sites
- Retipirula crassitesta12 sites
- Pholadomya (Pholadomya) nasuta11 sites
- Sycum mucronatum11 sites
- Acila (Truncacila) decisa10 sites
- Crassatella unioides9 sites
- Macrocallista8 sites
The Paleobiology Database records 72 sites for Cucullaea mathewsonii, 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
17 references- A contribution to the paleontology of the Martinez Eocene of California23
- Fauna of the Martinez Eocene of California15
- Geology and oil resources of a part of Los Angeles and Ventura counties, California8
- Geology of the Northern Santa Ana Mountains, California4
- Reconnaissance of the geology and oil possibilities of Baja California, Mexico4
- Stratigraphy, paleontology, and geology of the Central Santa Cruz Mountains, California Coast Ranges3
- Geology of the coast ranges immediately north of the San Francisco Bay region, California3
- Age, Correlation and Possible Tethyan Affinities of Mollusks from the Lodo Formation of Fresno County, California2
- Geology of the eastern part of the Santa Monica Mountains, Los Angeles County, California2
- Paleontological evidence of the Campanian to Early Paleocene paleogeography of Baja California1
- Unpublished data on Cretaceous-Paleocene molluscan assemblages1
- Additions to the Late Paleocene Molluscan Fauna from the Santa Monica Mountains, Los Angeles County. Southern California1
Each of the 72 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. 5 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 Cucullaea mathewsonii
- Source
- GBIF
- Credit
- via GBIF
- Licence
- CC BY 4.0
- Commercial use
- the licence allows it
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itCucullaea through timeFormations of the PaleoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Gabb 1864)