Pitar quadratus

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- Sits inside
- PitarPBDB
- Diet
- suspension feederPBDB, for Pitar
- Life habit
- infaunalPBDB, for Pitar
- Motility
- facultatively mobilePBDB, for Pitar
- Vision
- blindPBDB, for Bivalvia
Time the record covers
At least 18 million years on record.
The record covers at least 59.24 Mya to 41.03 Mya. No occurrence read is dated outside 66 Mya to 33.9 Mya.
15 occurrences of Pitar quadratus 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
15 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
3 formations
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The named rock units Pitar quadratus 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.
Pitar quadratus and its relatives
PaleoceneWhere Pitar quadratus and its relatives were recorded in the Paleocene.
Found in the same rock
213 taxa- Polinices hornii7 sites
- Dentalium stramineum6 sites
- Pseudoperissolax tricarnatus6 sites
- Turritella infragranulata pachecoensis6 sites
- Amauropsis martinezensis5 sites
- Cucullaea mathewsonii5 sites
- Glycymerita major5 sites
- Nemocardium (Nemocardium) linteum5 sites
- Pholadomya (Pholadomya) nasuta5 sites
- Priscoficus robustus5 sites
- Scaphander (Mirascapha) costatus5 sites
- Siphonalia lineata5 sites
- Acila (Truncacila) decisa4 sites
- Brachidontes (Brachidontes) cowlitzensis4 sites
- Brachysphingus sinuatus4 sites
- Meretrix stantoni4 sites
- Nuculana4 sites
- Nuculana (Saccella) alaeformis4 sites
- Sinum obliquum4 sites
- Solena (Eosolen) stantoni4 sites
- Tellina (Saulella) undulifera4 sites
- Turricula4 sites
- Turridae4 sites
- Xenophora zitteli4 sites
The Paleobiology Database records 15 sites for Pitar quadratus, 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
4 references- Geology of the coast ranges immediately north of the San Francisco Bay region, California5
- Fauna of the Martinez Eocene of California4
- Paleoecological anlaysis of molluscan assemblages from the Middle Eocene Cowlitz Formation, southwestern Washington3
- Stratigraphy and sedimentology of the Eocene Tejon Formation, western Tehachapi and San Emigdio mountains, California3
Each of the 15 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 doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content1

Picture of Pitar quadratus
- 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 Pitar quadratus 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 itPitar through timeFormations of the PaleoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Gabb 1864)