Anaulus

Anaulus

via iDigBio · CC BY · 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
AnaulaceaePBDB
Diet
"photoautotroph"PBDB, for Bacillariophyceae
Environment
marine,brackish,freshwaterPBDB, for Bacillariophyceae

Time the record covers

At least 38 million years on record.

The record covers at least 72.2 Mya to 33.9 Mya. No occurrence read is dated outside 83.6 Mya to 23.04 Mya.

Late Cretaceous — about 27 of 40 occurrencesLate CretaceousPaleocene — about 12 of 40 occurrencesPaleoceneEocene — about 0 of 40 occurrencesOligocene — about 1 of 40 occurrencesOligoceneMiocene — about 0 of 40 occurrences85–83 Mya — about 2 occurrences83–81 Mya — about 4 occurrences81–79 Mya — about 4 occurrences79–76 Mya — about 4 occurrences76–74 Mya — about 4 occurrences74–72 Mya — about 4 occurrences72–70 Mya — about 1 occurrence70–68 Mya — about 1 occurrence68–66 Mya — about 1 occurrence66–64 Mya — about 3 occurrences64–62 Mya — about 3 occurrences62–60 Mya — about 3 occurrences60–58 Mya — about 3 occurrences58–55 Mya — about 2 occurrences34–32 Mya — about 0.1 occurrences32–30 Mya — about 0.2 occurrences30–28 Mya — about 0.2 occurrences28–26 Mya — about 0.2 occurrences26–24 Mya — about 0.2 occurrences24–22 Mya — about 0.1 occurrences72.2 Mya33.9 Mya85 Mya22 Mya

40 occurrences of Anaulus on record, most of them in the Late Cretaceous. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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 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

Mason River — 69.46°N, 126.97°WLopez de Bertodano — 64.25°S, 56.75°WSobral — 64.25°S, 56.75°W

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The named rock units Anaulus 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.

Anaulus and its relatives

Late Cretaceous

Where Anaulus and its relatives were recorded in the Late Cretaceous.

Found in the same rock

80 taxa

The Paleobiology Database records 32 sites for Anaulus, 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

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. 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 Anaulus

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

No 3D scan of Anaulus 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 itAnaulaceae through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Ehrenberg 1844