Borsonella bartschi
Borsonella bartschi is a species of sea snail, a marine gastropod mollusk in the family Borsoniidae.

Smithsonian Institute · CC0 · 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
- BorsonellaPBDB
- Diet
- carnivorePBDB, for Conoidea
- Life habit
- epifaunalPBDB, for Conoidea
- Motility
- actively mobilePBDB, for Conoidea
- Vision
- limitedPBDB, for Gastropoda
Time the record covers
At most 763 thousand years on record.
Every occurrence read is dated to somewhere between 774 ka and 11.7 ka, and nothing in the dating separates them, so that window is what the record shows rather than a span.
12 occurrences of Borsonella bartschi 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
12 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
4 formations
- Timms Point Silt Formation7
- San Pedro Sand Formation2
- Palos Verdes Sand Formation2
- Lomita Marl Formation1
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The named rock units Borsonella bartschi has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Borsonella bartschi and its relatives
PleistoceneWhere Borsonella bartschi and its relatives were recorded in the Pleistocene.
Found in the same rock
719 taxa- Caesia perpinguis5 sites
- Callianax biplicata5 sites
- Callianax pedroana5 sites
- Calliostoma canaliculatum5 sites
- Chlamys hastata5 sites
- Epilucina californica5 sites
- Mitrella gausapata5 sites
- Saccella taphria5 sites
- Solen sicarius5 sites
- Turritella cooperi5 sites
- Acila (Truncacila) castrensis4 sites
- Acteocina culcitella4 sites
- Acteocina harpa4 sites
- Boreotrophon stuarti4 sites
- Caesia fossatus4 sites
- Californiconus californicus4 sites
- Chlamys rubida4 sites
- Chlorostoma montereyi4 sites
- Coanicardita ventricosa4 sites
- Crepidula nummaria4 sites
- Crockerella conradiana4 sites
- Cumingia californica4 sites
- Dallocardia quadragenarium4 sites
- Dentalium neohexagonum4 sites
The Paleobiology Database records 5 sites for Borsonella bartschi, 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
5 references- The cool-water Timms Point Pleistocene horizon at San Pedro, California7
- The Paleontology and Stratigraphy of the Marine Pliocene and Pleistocene of San Pedro, California2
- Late Pleistocene invertebrates of the Newport Bay area, California1
- The Anomalous Stratigraphy of Deadman's Island, California1
- The fossils of the Lower San Pedro fauna of the Nob Hill cut, San Pedro, California1
Each of the 12 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 Borsonella bartschi
- Source
- Wikipedia/Commons
- Credit
- Smithsonian Institute
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Borsonella bartschi 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 itBorsonella through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Arnold 1903)