Altrix

Altrix is a genus of sea snails, marine gastropod mollusks in the family Fissurellidae, the keyhole limpets.

Altrix

Naturalis Biodiversity Center · 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
FissurellidaePBDB
Diet
grazerPBDB, for Fissurellidae
Life habit
epifaunalPBDB, for Fissurellidae
Motility
facultatively mobilePBDB, for Fissurellidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 7 million years on record.

The record covers at least 48.07 Mya to 41.03 Mya. No occurrence read is dated outside 56 Mya to 37.71 Mya.

Paleocene — about 0 of 7 occurrencesEocene — about 7 of 7 occurrencesEocene57–56 Mya — about 0.0 occurrences56–55 Mya — about 0.1 occurrences55–55 Mya — about 0.1 occurrences55–54 Mya — about 0.1 occurrences54–53 Mya — about 0.1 occurrences53–53 Mya — about 0.1 occurrences53–52 Mya — about 0.1 occurrences52–51 Mya — about 0.1 occurrences51–51 Mya — about 0.1 occurrences51–50 Mya — about 0.1 occurrences50–49 Mya — about 0.1 occurrences49–49 Mya — about 0.1 occurrences49–48 Mya — about 0.1 occurrences48–47 Mya — about 0.2 occurrences47–47 Mya — about 0.2 occurrences47–46 Mya — about 0.2 occurrences46–46 Mya — about 0.2 occurrences46–45 Mya — about 0.2 occurrences45–44 Mya — about 0.2 occurrences44–44 Mya — about 0.2 occurrences44–43 Mya — about 0.2 occurrences43–42 Mya — about 0.2 occurrences42–42 Mya — about 0.2 occurrences42–41 Mya — about 0.2 occurrences41–40 Mya — about 0.7 occurrences40–40 Mya — about 0.8 occurrences40–39 Mya — about 0.8 occurrences39–38 Mya — about 0.8 occurrences38–38 Mya — about 0.8 occurrences38–37 Mya — about 0.2 occurrences48.07 Mya41.03 Mya56.5 Mya37.2 Mya

7 occurrences of Altrix on record, most of them in the Eocene. 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

7 occurrences

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

3 formations

Cook Mountain — 32.10°N, 88.86°WCook Mountain — 32.32°N, 89.15°WCook Mountain — 32.32°N, 89.03°WSantee Limestone — 33.35°N, 80.25°WCrescent — 47.99°N, 123.14°W

Loading coastlines…

The named rock units Altrix has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Altrix and its relatives

Eocene

Where Altrix and its relatives were recorded in the Eocene.

Found in the same rock

104 taxa

The Paleobiology Database records 3 sites for Altrix, 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

Each of the 7 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 the Paleobiology Database's own record for the work.

Media and terms

Media content1

Picture of Altrix

Source
GBIF
Credit
Naturalis Biodiversity Center
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Altrix 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.

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 itFissurellidae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Palmer 1942)