Pseudodiala acuta

via iDigBio · 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
- acute barleysnailPBDB
- Sits inside
- PseudodialaPBDB
- Diet
- grazerPBDB, for Barleeiidae
- Life habit
- epifaunalPBDB, for Barleeiidae
- Motility
- actively mobilePBDB, for Barleeiidae
- Vision
- limitedPBDB, for Gastropoda
Time the record covers
At least 1.6 million years on record.
The record covers at least 1.8 Mya to 129 ka. No occurrence read is dated outside 2.58 Mya to 0 Mya.
22 occurrences of Pseudodiala acuta 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
22 occurrences- Pleistocene100%
- 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
8 formations
- Unnamed Formation6
- Lomita Marl Formation6
- San Pedro Sand Formation2
- Palos Verdes Sand Formation2
- Timms Point Silt Formation1
- Careaga Sandstone Formation1
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The named rock units Pseudodiala acuta has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.
Pseudodiala acuta and its relatives
PleistoceneWhere Pseudodiala acuta and its relatives were recorded in the Pleistocene.
Found in the same rock
846 taxa- Callianax biplicata13 sites
- Pomaulax gibberosa12 sites
- Crepidula adunca11 sites
- Epilucina californica11 sites
- Mitrella tuberosa11 sites
- Thylacodes squamigerus11 sites
- Actonia compacta10 sites
- Californiconus californicus10 sites
- Homalopoma (Homalopoma) luridum10 sites
- Nutricola tantilla10 sites
- Alia carinata9 sites
- Chlamys hastata9 sites
- Crepidula nummaria9 sites
- Dallocardia quadragenarium9 sites
- Glans carpenteri9 sites
- Granulina margaritula9 sites
- Hima cooperi9 sites
- Lirobittium attenuatum9 sites
- Barleeia oldroydi8 sites
- Caesia perpinguis8 sites
- Calliostoma canaliculatum8 sites
- Chlorostoma funebrale8 sites
- Cumingia californica8 sites
- Dendropoma lituella8 sites
The Paleobiology Database records 16 sites for Pseudodiala acuta, 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
12 references- Geology of San Nicolas Island, California6
- Geology and Paleontology of Palos Verdes Hills, California4
- Late Pleistocene invertebrates of the Newport Bay area, California2
- The cool-water Timms Point Pleistocene horizon at San Pedro, California2
- Late Pleistocene marine paleoecology and zoogeography on Central California1
- Pleistocene invertebrates from the Dume Terrace, western Santa Monica Mountains, California1
- Paleoecologic molluscan geography of the Californian Pleistocene1
- Geology and paleontology of the Santa Maria District California1
- Geologic Application of Biometrical Analysis of Molluscan Assemblages1
- Distributional List of the West American Marine Molluscs from San Diego, California to the Polar Sea1
- Catalogue of the Marine Pliocene and Pleistocene Mollusca of California1
- The fossils of the Lower San Pedro fauna of the Nob Hill cut, San Pedro, California1
Each of the 22 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 Pseudodiala acuta
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
No 3D scan of Pseudodiala acuta 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 itPseudodiala through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Carpenter 1864)