Acera

Acera

via iDigBio · CC BY-NC-ND · 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
BullidaePBDB
Diet
carnivorePBDB, for Bullidae
Life habit
semi-infaunalPBDB, for Bullidae
Motility
actively mobilePBDB, for Bullidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 103 million years on record.

The record covers at least 106.3 Mya to 2.58 Mya. No occurrence read is dated outside 110.1 Mya to 11.7 ka.

Early Cretaceous — about 1 of 4 occurrencesEarly CretaceousLate Cretaceous — about 0 of 4 occurrencesPaleocene — about 1 of 4 occurrencesPaleoceneEocene — about 1 of 4 occurrencesEoceneOligocene — about 0 of 4 occurrencesMiocene — about 0 of 4 occurrencesPliocene — about 0 of 4 occurrencesPleistocene — about 1 of 4 occurrences112–109 Mya — about 0.4 occurrences109–105 Mya — about 0.6 occurrences60–56 Mya — about 1.0 occurrences56–52 Mya — about 0.0 occurrences41–37 Mya — about 1 occurrence3.7–0 Mya — about 1 occurrence106.3 Mya2.58 Mya112 Mya0 Mya

4 occurrences of Acera on record, most of them in the Early 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

4 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

2 formations

Barton Clay — 50.74°N, 1.69°WRiachuelo — 10.50°S, 37.50°W

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The named rock units Acera has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.

Acera and its relatives

Early Cretaceous

Where Acera and its relatives were recorded in the Early Cretaceous.

Found in the same rock

294 taxa

The Paleobiology Database records 3 sites for Acera, 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 4 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 Acera

Source
iDigBio
Credit
via iDigBio
Licence
CC BY-NC-ND
Commercial use
the licence does not allow it

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itBullidae through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Lamarck 1812