Semiactaeon

Semiactaeon

via GBIF · CC BY 4.0 · 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
ActeonidaePBDB
Diet
carnivorePBDB, for Acteonidae
Life habit
epifaunalPBDB, for Acteonidae
Motility
actively mobilePBDB, for Acteonidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 42 million years on record.

The record covers at least 48.07 Mya to 5.333 Mya. No occurrence read is dated outside 56 Mya to 3.6 Mya.

Paleocene — about 0 of 15 occurrencesEocene — about 13 of 15 occurrencesEoceneOligocene — about 0 of 15 occurrencesMiocene — about 1 of 15 occurrencesMiocenePliocene — about 1 of 15 occurrences57–55 Mya — about 1 occurrence55–53 Mya — about 3 occurrences53–52 Mya — about 3 occurrences52–50 Mya — about 3 occurrences50–48 Mya — about 2 occurrences48–46 Mya — about 0.5 occurrences46–44 Mya — about 0.5 occurrences44–43 Mya — about 0.5 occurrences43–41 Mya — about 0.4 occurrences12–9.8 Mya — about 0.3 occurrences9.8–8.0 Mya — about 0.3 occurrences8.0–6.2 Mya — about 0.3 occurrences6.2–4.4 Mya — about 0.7 occurrences4.4–2.6 Mya — about 0.4 occurrences48.07 Mya5.333 Mya57 Mya3 Mya

15 occurrences of Semiactaeon 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

15 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

Reklaw — 30.88°N, 95.38°WReklaw — 30.11°N, 97.32°WReklaw — 30.01°N, 97.26°WReklaw — 30.80°N, 96.72°WSelsey — 50.73°N, 0.78°WDry Creek Sands — 34.89°S, 138.56°E

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The named rock units Semiactaeon 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.

Semiactaeon and its relatives

Eocene

Where Semiactaeon and its relatives were recorded in the Eocene.

Found in the same rock

655 taxa

The Paleobiology Database records 12 sites for Semiactaeon, 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

6 references

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. 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 Semiactaeon

Source
GBIF
Credit
via GBIF
Licence
CC BY 4.0
Commercial use
the licence allows it

No 3D scan of Semiactaeon 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 itActeonidae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Cossmann 1889