Nacella

Nacella is a southern, cold-water genus of true limpets, marine gastropod molluscs in the family Nacellidae, the true limpets.

Nacella

Jan Delsing · 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
NacellidaePBDB
Diet
grazerPBDB, for Nacellidae
Life habit
epifaunalPBDB, for Nacellidae
Motility
facultatively mobile, attachedPBDB, for Nacellidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 65 million years on record.

The record covers at least 66 Mya to 11.7 ka. No occurrence read is dated outside 72.2 Mya to 0 Mya.

Late Cretaceous — about 5 of 42 occurrencesLate CretaceousPaleocene — about 4 of 42 occurrencesPaleoceneEocene — about 1 of 42 occurrencesEoceneOligocene — about 0 of 42 occurrencesMiocene — about 6 of 42 occurrencesMiocenePliocene — about 8 of 42 occurrencesPleistocene — about 5 of 42 occurrences74–71 Mya — about 0.8 occurrences71–69 Mya — about 2 occurrences69–66 Mya — about 2 occurrences66–64 Mya — about 2 occurrences64–61 Mya — about 2 occurrences39–37 Mya — about 0.2 occurrences37–34 Mya — about 0.6 occurrences34–32 Mya — about 0.1 occurrences25–22 Mya — about 0.1 occurrences22–20 Mya — about 0.9 occurrences20–17 Mya — about 2 occurrences17–15 Mya — about 1.0 occurrences12–9.8 Mya — about 0.6 occurrences9.8–7.4 Mya — about 0.8 occurrences7.4–4.9 Mya — about 2 occurrences4.9–2.5 Mya — about 6 occurrences2.5–0 Mya — about 18 occurrences66 Mya11.7 ka74 Mya0 Mya

42 occurrences of Nacella on record. 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

42 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

9 formations

Jagüel — 38.13°S, 68.41°WHuacllaco — 15.90°S, 74.17°WChilcatay — 15.03°S, 74.98°WRoca — 37.54°S, 69.87°WEntrerriense — 42.25°S, 64.08°WPallinup Siltstone — 35.02°S, 117.89°EPalembang — 2.92°S, 104.75°ELefipán — 42.67°S, 69.98°WHuenteguapi — 37.38°S, 73.53°W

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The named rock units Nacella has been recovered from, largest first. Drawn where the rock is now, not where it formed. 23 occurrences have no formation on record, which is common for older literature.

Found in the same rock

161 taxa

The Paleobiology Database records 14 sites for Nacella, 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

10 references

Each of the 42 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 Nacella

Credit
Jan Delsing
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Nacella was found in Smithsonian Open Access and Sketchfab.

MorphoSource 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 itNacellidae through timeThe world it lived on

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