Caecum johnsoni
Caecum johnsoni, common name the Johnson's caecum, is a species of small sea snail, a marine gastropod mollusk or micromollusk in the family Caecidae.
Ortigosa D, Suárez-Mozo NY, Barrera NC, Simões N (2018) First survey of Interstitial molluscs from Cayo Nuevo, Campec… · CC BY 4.0 · via Wikipedia/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- Sits inside
- CaecumPBDB
- Diet
- grazerPBDB, for Caecidae
- Life habit
- epifaunalPBDB, for Caecidae
- Motility
- actively mobilePBDB, for Caecidae
- Vision
- limitedPBDB, for Gastropoda
Time the record covers
At most 12 thousand years on record.
Every occurrence read is dated to somewhere between 11.7 ka and 0 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
2 occurrences of Caecum johnsoni on record, most of them in the Holocene. 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
2 occurrences- Holocene100%
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 Caecum johnsoni 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.
Caecum johnsoni and its relatives
HoloceneWhere Caecum johnsoni and its relatives were recorded in the Holocene.
Found in the same rock
150 taxa- Abra aequalis2 sites
- Acteocina canaliculata2 sites
- Aligena texasiana2 sites
- Anadara (Cunearca) brasiliana2 sites
- Anadara (Larkinia) transversa2 sites
- Angulus texanus2 sites
- Anodontia alba2 sites
- Anomalocardia cuneimeris2 sites
- Anomia simplex2 sites
- Arcinella cornuta2 sites
- Argopecten gibbus2 sites
- Astyris lunata2 sites
- Atrina serrata2 sites
- Balcis2 sites
- Bittiolum varium2 sites
- Boonea impressa2 sites
- Boonea seminuda2 sites
- Brachidontes exustus2 sites
- Busycon spiratum plagosum2 sites
- Caecum imbricatum2 sites
- Cancellaria reticulata2 sites
- Caryocorbula caribaea2 sites
- Caryocorbula contracta2 sites
- Chama congregata2 sites
The Paleobiology Database records 2 sites for Caecum johnsoni, 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- Stratigraphy of newly exposed Quaternary sediments, eastern Orleans Parish, Louisiana1
- Stratigraphy of newly exposed Quaternary seduments, eastern Orleans Parish, Louisiana1
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. Each entry links to the Paleobiology Database's own record for the work.
Media and terms
Media content1
Picture of Caecum johnsoni
- Source
- Wikipedia/Commons
- Credit
- Ortigosa D, Suárez-Mozo NY, Barrera NC, Simões N (2018) First survey of Interstitial molluscs from Cayo Nuevo, Campec…
- Licence
- CC BY 4.0
- Commercial use
- the licence allows it
No 3D scan of Caecum johnsoni 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.
The description on this site
- Licence
- CC BY-SA 4.0
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itCaecum through timeFormations of the HoloceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Winkley 1908)