Cyclorismina

Cyclorismina

via iDigBio · CC0 · 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
TapetiniPBDB
Diet
suspension feederPBDB, for Veneridae
Life habit
infaunalPBDB, for Veneridae
Motility
facultatively mobilePBDB, for Veneridae
Vision
blindPBDB, for Bivalvia

Time the record covers

At least 45 million years on record.

The record covers at least 83.6 Mya to 37.71 Mya. No occurrence read is dated outside 86.1 Mya to 33.9 Mya.

Late Cretaceous — about 2 of 30 occurrencesLate CretaceousPaleocene — about 1 of 30 occurrencesPaleoceneEocene — about 27 of 30 occurrencesEoceneOligocene — about 0 of 30 occurrences87–85 Mya — about 0.3 occurrences85–84 Mya — about 0.7 occurrences73–71 Mya — about 0.2 occurrences71–69 Mya — about 0.3 occurrences69–67 Mya — about 0.3 occurrences67–65 Mya — about 0.3 occurrences65–64 Mya — about 0.4 occurrences64–62 Mya — about 0.4 occurrences62–60 Mya — about 0.0 occurrences49–47 Mya — about 0.4 occurrences47–46 Mya — about 1 occurrence46–44 Mya — about 1 occurrence44–42 Mya — about 1 occurrence42–40 Mya — about 3 occurrences40–38 Mya — about 5 occurrences38–36 Mya — about 6 occurrences36–35 Mya — about 7 occurrences35–33 Mya — about 3 occurrences83.6 Mya37.71 Mya87 Mya33 Mya

30 occurrences of Cyclorismina on record, most of them in the Eocene. 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

30 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

4 formations

La Meseta — 64.25°S, 56.70°WLa Meseta — 64.24°S, 56.67°WLa Meseta — 64.24°S, 56.65°WLa Meseta — 64.25°S, 56.62°WSubmeseta — 64.25°S, 56.64°WSubmeseta — 64.26°S, 56.66°WSubmeseta — 64.24°S, 56.65°WSubmeseta — 64.25°S, 56.62°WSobral — 64.25°S, 56.75°WOkarahia Sandstone — 42.57°S, 173.52°E

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The named rock units Cyclorismina 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.

Cyclorismina and its relatives

Eocene

Where Cyclorismina and its relatives were recorded in the Eocene.

Found in the same rock

202 taxa

The Paleobiology Database records 30 sites for Cyclorismina, 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

4 references

Each of the 30 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 content2

Picture of Cyclorismina

Source
iDigBio
Credit
via iDigBio
Licence
CC0
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC0 Public Domain
Commercial use
the licence allows it

Smithsonian Open Access and MorphoSource were 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 itTapetini through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Marwick 1927