Tritonalia tethys
Searched as Chrysodomus packardi. The Paleobiology Database treats Tritonalia tethys as the accepted name.

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
- Purpura (Tritonalia)PBDB
- Diet
- carnivorePBDB, for Muricidae
- Life habit
- epifaunalPBDB, for Muricidae
- Motility
- actively mobilePBDB, for Muricidae
- Vision
- limitedPBDB, for Gastropoda
Time the record covers
At least 17 million years on record.
The record covers at least 23.04 Mya to 5.333 Mya. No occurrence read is dated outside 27.3 Mya to 3.6 Mya.
11 occurrences of Tritonalia tethys on record. 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
11 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
4 formations
Loading coastlines…
The named rock units Tritonalia tethys has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Found in the same rock
83 taxa- Anadara trilineata4 sites
- Ostrea (Ostrea) atwoodii4 sites
- Caesia californiana3 sites
- Calyptraea filosa3 sites
- Crepidula onyx3 sites
- Forreria belcheri3 sites
- Forreria magister3 sites
- Glossaulax reclusiana3 sites
- Leporimetis obesa3 sites
- Lyropecten terminus3 sites
- Pusio kettlemanensis3 sites
- Tresus nuttallii3 sites
- Turritella vanvlecki3 sites
- Callithaca tenerrima2 sites
- Crucibulum2 sites
- Dallocardia quadragenarium2 sites
- Leukoma staminea2 sites
- Macoma (Macoma) inquinata affinis2 sites
- Macoma (Rexithaerus) indentata2 sites
- Macoma nasuta2 sites
- Monia macrochisma2 sites
- Nutricola tantilla2 sites
- Pupillaria pupilla2 sites
- Rexithaerus secta2 sites
The Paleobiology Database records 9 sites for Tritonalia tethys, 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
3 references- The Etchegoin Pliocene of middle California7
- Pancho Rico Formation, Salinas Valley3
- Tertiary faunal horizons of western Washington1
Each of the 11 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 Tritonalia tethys
- 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 Tritonalia tethys 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 itPurpura (Tritonalia) through timeThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Nomland 1917