Margarella

Margarella is a genus of sea snails, marine gastropod molluscs in the subfamily Margarellinae of the family Calliostomatidae.

Margarella

Manuel CABALLER · CC BY 4.0 · 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
TrochidaePBDB
Diet
grazerPBDB, for Trochidae
Life habit
epifaunalPBDB, for Trochidae
Motility
actively mobilePBDB, for Trochidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 93 million years on record.

The record covers at least 93.9 Mya to 11.7 ka. No occurrence read is dated outside 100.5 Mya to 0 Mya.

Early Cretaceous — about 0 of 10 occurrencesLate Cretaceous — about 4 of 10 occurrencesLate CretaceousPaleocene — about 0 of 10 occurrencesEocene — about 3 of 10 occurrencesEoceneOligocene — about 0 of 10 occurrencesMiocene — about 0 of 10 occurrencesPliocene — about 0 of 10 occurrencesPleistocene — about 0 of 10 occurrences103–99 Mya — about 0.4 occurrences99–96 Mya — about 1 occurrence96–92 Mya — about 0.5 occurrences75–72 Mya — about 0.1 occurrences72–68 Mya — about 1 occurrence68–65 Mya — about 0.8 occurrences58–55 Mya — about 1.0 occurrences55–51 Mya — about 2 occurrences3.4–0 Mya — about 3 occurrences93.9 Mya11.7 ka103 Mya0 Mya

10 occurrences of Margarella on record, most of them in the Late Cretaceous. 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

10 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

Red Bluff Tuff — 43.97°S, 176.59°WRed Bluff Tuff — 44.30°S, 176.25°WRed Bluff Tuff — 44.30°S, 176.25°EKemp Clay — 31.11°N, 96.83°WCorsicana — 29.47°N, 98.29°W

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The named rock units Margarella has been recovered from, largest first. Drawn where the rock is now, not where it formed. 5 occurrences have no formation on record, which is common for older literature.

Margarella and its relatives

Late Cretaceous

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

Found in the same rock

191 taxa

The Paleobiology Database records 7 sites for Margarella, 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 10 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 Margarella

Credit
Manuel CABALLER
Licence
CC BY 4.0
Commercial use
the licence allows it

No 3D scan of Margarella 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.

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 itTrochidae through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Thiele 1893