Katherinella arnoldi

University of Washington Burke Museum · CC0 · 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
- KatherinellaPBDB
- Diet
- suspension feederPBDB, for Veneridae
- Life habit
- infaunalPBDB, for Veneridae
- Motility
- facultatively mobilePBDB, for Veneridae
- Vision
- blindPBDB, for Bivalvia
Time the record covers
At least 52 million years on record.
The record covers at least 56 Mya to 3.6 Mya. No occurrence read is dated outside 66 Mya to 774 ka.
40 occurrences of Katherinella arnoldi on record, most of them in the Oligocene. 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
40 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
7 formations
- Empire Formation4
- Blakeley Formation3
- Lincoln Creek Formation2
- Snatol'skaya Formation1
- Unel'skaya Formation1
- Merced Formation1
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The named rock units Katherinella arnoldi has been recovered from, largest first. Drawn where the rock is now, not where it formed. 27 occurrences have no formation on record, which is common for older literature.
Katherinella arnoldi and its relatives
OligoceneWhere Katherinella arnoldi and its relatives were recorded in the Oligocene.
Found in the same rock
291 taxa- Dentalium pseudonyma13 sites
- Cryptonatica oregonensis9 sites
- Tellina9 sites
- Thracia (Homoeodesma) trapezoides9 sites
- Conchocele bisecta6 sites
- Liracassis petrosa6 sites
- Macrocallista vespertina6 sites
- Panopea generosa6 sites
- Phacoides6 sites
- Anechinocardium lorenzanum5 sites
- Crenella porterensis5 sites
- Macrocallista cathcartensis5 sites
- Mactromeris albaria5 sites
- Acila (Truncacila) conradi4 sites
- Anadara montereyana4 sites
- Aturia angustata4 sites
- Crepidula princeps4 sites
- Nuculana (Saccella) chehalisensis4 sites
- Portlandia chehalisensis4 sites
- Tellinidae4 sites
- Acila (Truncacila) shumardi3 sites
- Anadara trilineata3 sites
- Calyptraea diegoana3 sites
- Cyclocardia subtenta3 sites
The Paleobiology Database records 32 sites for Katherinella arnoldi, 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- Tertiary faunal horizons of western Washington31
- The marine Tertiary stratigraphy of the North Pacific coast of America4
- Neogene and Paleogene Molluscan (Bivalvia) Cenozones of the Russian Northeast.2
- Paleontology of the Marine Tertiary formations of Oregon and Washington2
- Faunal and stratigraphic relationships of the Empire Formation, Coos Bay, Oregon1
Each of the 40 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 Katherinella arnoldi
- Source
- GBIF
- Credit
- University of Washington Burke Museum
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Katherinella arnoldi was found in MorphoSource and Sketchfab.
Smithsonian Open Access was 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 itKatherinella through timeFormations of the OligoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Weaver 1916)