Umbraculum

Umbraculum, common name the "umbrella slugs", is a genus of unusual sea snails or false limpets, marine gastropod molluscs in the family Umbraculidae.

Umbraculum

Jeffdelonge ( talk ) · Public Domain · 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
UmbraculidaePBDB
Diet
carnivorePBDB, for Umbraculidae
Life habit
epifaunalPBDB, for Umbraculidae
Motility
actively mobilePBDB, for Umbraculidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 38 million years on record.

The record covers at least 61.66 Mya to 23.04 Mya. No occurrence read is dated outside 66 Mya to 15.98 Mya.

Late Cretaceous — about 0 of 32 occurrencesPaleocene — about 3 of 32 occurrencesPaleoceneEocene — about 27 of 32 occurrencesEoceneOligocene — about 0 of 32 occurrencesMiocene — about 2 of 32 occurrencesMiocene67–65 Mya — about 0.2 occurrences65–64 Mya — about 0.4 occurrences64–62 Mya — about 0.4 occurrences62–60 Mya — about 1.0 occurrences60–58 Mya — about 0.6 occurrences58–57 Mya — about 0.3 occurrences57–55 Mya — about 0.7 occurrences55–53 Mya — about 0.9 occurrences53–51 Mya — about 0.9 occurrences51–50 Mya — about 0.9 occurrences50–48 Mya — about 0.9 occurrences48–46 Mya — about 0.7 occurrences46–44 Mya — about 0.7 occurrences44–43 Mya — about 0.7 occurrences43–41 Mya — about 0.9 occurrences41–39 Mya — about 9 occurrences39–38 Mya — about 8 occurrences38–36 Mya — about 2 occurrences36–34 Mya — about 2 occurrences34–32 Mya — about 0.1 occurrences24–22 Mya — about 0.3 occurrences22–20 Mya — about 0.5 occurrences20–18 Mya — about 0.5 occurrences18–17 Mya — about 0.5 occurrences17–15 Mya — about 0.2 occurrences61.66 Mya23.04 Mya67 Mya15 Mya

32 occurrences of Umbraculum on record, most of them in the Eocene. 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

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

12 formations

Moodys Branch — 32.28°N, 90.18°WMoodys Branch — 31.76°N, 95.63°WMoodys Branch — 31.67°N, 92.89°WMoodys Branch — 32.85°N, 90.41°WMoodys Branch — 32.98°N, 90.30°WCook Mountain — 32.14°N, 89.00°WCook Mountain — 30.63°N, 96.55°WCook Mountain — 30.64°N, 96.52°WLisbon — 31.76°N, 88.10°WLisbon — 31.50°N, 87.80°WLisbon — 31.53°N, 87.50°WReklaw — 30.88°N, 95.38°WReklaw — 30.80°N, 96.72°WYazoo Clay — 31.78°N, 92.49°WWeches — 31.11°N, 96.28°WWeches — 31.23°N, 96.04°WSelsey — 50.73°N, 0.78°WPirabas — 0.80°S, 47.13°WBrightseat — 38.97°N, 76.85°WPorters Creek — 31.98°N, 87.28°WSeguin — 30.33°N, 97.37°WHatchetigbee — 31.94°N, 88.06°W

Loading coastlines…

The named rock units Umbraculum 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.

Umbraculum and its relatives

Eocene

Where Umbraculum and its relatives were recorded in the Eocene.

Found in the same rock

1,170 taxa

The Paleobiology Database records 21 sites for Umbraculum, 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

11 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. 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 Umbraculum

Credit
Jeffdelonge ( talk )
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Umbraculum 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 itUmbraculidae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Schumacher 1817