Onustus

Onustus is a genus of large sea snails, marine gastropod mollusks in the family Xenophoridae, the carrier shells.

Onustus

Uncredited · via Wikipedia/Commons. 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
XenophoridaePBDB
Diet
grazer, carnivorePBDB
Life habit
epifaunalPBDB
Motility
actively mobilePBDB
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 168 million years on record.

The record covers at least 170.9 Mya to 2.58 Mya. No occurrence read is dated outside 174.7 Mya to 11.7 ka.

Early Jurassic — about 0 of 32 occurrencesMiddle Jurassic — about 1 of 32 occurrencesLate Jurassic — about 0 of 32 occurrencesEarly Cretaceous — about 0 of 32 occurrencesLate Cretaceous — about 0 of 32 occurrencesPaleocene — about 1 of 32 occurrencesEocene — about 9 of 32 occurrencesEoceneOligocene — about 2 of 32 occurrencesMiocene — about 9 of 32 occurrencesMiocenePliocene — about 8 of 32 occurrencesPleistocene — about 2 of 32 occurrences178–172 Mya — about 0.6 occurrences172–166 Mya — about 0.4 occurrences71–65 Mya — about 0.1 occurrences65–59 Mya — about 0.6 occurrences59–53 Mya — about 0.3 occurrences53–48 Mya — about 0.4 occurrences48–42 Mya — about 4 occurrences42–36 Mya — about 3 occurrences36–30 Mya — about 2 occurrences30–24 Mya — about 1 occurrence24–18 Mya — about 0.8 occurrences18–12 Mya — about 0.4 occurrences12–5.9 Mya — about 5 occurrences5.9–0 Mya — about 13 occurrences170.9 Mya2.58 Mya178 Mya0 Mya

32 occurrences of Onustus on record, most of them in the Eocene. The Paleobiology Database records this as a living group. 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

32 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

15 formations

Gurabo — 19.50°N, 71.18°WGurabo — 19.30°N, 71.67°WAmeki — 5.00°N, 7.50°EInglis Limestone — 29.05°N, 82.45°WInglis Limestone — 29.03°N, 82.67°WInglis Limestone — 28.92°N, 82.46°WCayo Agua — 9.17°N, 82.04°WNari — 26.36°N, 67.86°ETuatua Limestone — 17.47°S, 177.05°EOiching — 47.92°N, 13.00°EToukoshan — 24.47°N, 120.72°EToshima Sand — 34.62°N, 137.22°EShark Hole Point — 9.04°N, 81.74°WEscudo de Veraguas — 9.10°N, 81.58°WAnanai — 33.43°N, 133.97°ETermofourà — 45.06°N, 7.82°EDogger — 54.41°N, 0.87°WBrejning — 56.87°N, 8.64°E

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The named rock units Onustus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.

Onustus and its relatives

Eocene

Where Onustus and its relatives were recorded in the Eocene.

Found in the same rock

732 taxa

The Paleobiology Database records 16 sites for Onustus, 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

18 references

Each of the 32 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. 6 further references are not listed. 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 Onustus

Credit
nobody named on the record
Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record

No 3D scan of Onustus 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.

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 itXenophoridae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Swainson 1840)