Acrothoracica

The Acrothoracica are an infraclass of barnacles.

Acrothoracica

Benny K K Chan, Niklas Dreyer, Andy S Gale, Henrik Glenner, Christine Ewers-Saucedo, Marcos Pérez-Losada, Gregory A K… · 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
CirripediaPBDB
Diet
suspension feederPBDB, for Cirripedia
Life habit
epifaunalPBDB, for Cirripedia
Motility
stationary, attached, epibiontPBDB, for Cirripedia
Vision
limitedPBDB, for Cirripedia

Time the record covers

At least 298 million years on record.

The record covers at least 303.7 Mya to 5.333 Mya. No occurrence read is dated outside 307 Mya to 3.6 Mya.

Carboniferous — about 9 of 19 occurrencesPermian — about 2 of 19 occurrencesPermianEarly Triassic — about 0 of 19 occurrencesMiddle Triassic — about 0 of 19 occurrencesLate Triassic — about 0 of 19 occurrencesEarly Jurassic — about 0 of 19 occurrencesMiddle Jurassic — about 0 of 19 occurrencesLate Jurassic — about 4 of 19 occurrencesEarly Cretaceous — about 1 of 19 occurrencesEarly CretaceousLate Cretaceous — about 1 of 19 occurrencesLate CretaceousPaleocene — about 0 of 19 occurrencesEocene — about 0 of 19 occurrencesOligocene — about 0 of 19 occurrencesMiocene — about 1 of 19 occurrencesPliocene — about 1 of 19 occurrencesPleistocene — about 0 of 19 occurrences313–303 Mya — about 7 occurrences303–292 Mya — about 3 occurrences282–271 Mya — about 0.4 occurrences271–261 Mya — about 0.6 occurrences157–146 Mya — about 4 occurrences136–125 Mya — about 0.1 occurrences125–115 Mya — about 0.9 occurrences94–83 Mya — about 1 occurrence21–10 Mya — about 1 occurrence10–0 Mya — about 1 occurrence303.7 Mya5.333 Mya313 Mya0 Mya

19 occurrences of Acrothoracica on record, most of them in the Carboniferous. 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

19 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

7 formations

Wolf Mountain — 33.21°N, 97.83°WNiobrara — 38.72°N, 100.70°WWord — 30.40°N, 103.18°WStranger — 38.81°N, 95.19°WCaneyville Limestone — 38.46°N, 96.15°WDeer Creek — 38.60°N, 95.68°WTamiami — 26.13°N, 81.48°W

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The named rock units Acrothoracica has been recovered from, largest first. Drawn where the rock is now, not where it formed. 10 occurrences have no formation on record, which is common for older literature.

Acrothoracica and its relatives

Carboniferous

Where Acrothoracica and its relatives were recorded in the Carboniferous.

Found in the same rock

593 taxa

The Paleobiology Database records 19 sites for Acrothoracica, 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

9 references

Each of the 19 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 Acrothoracica

Credit
Benny K K Chan, Niklas Dreyer, Andy S Gale, Henrik Glenner, Christine Ewers-Saucedo, Marcos Pérez-Losada, Gregory A K…
Licence
CC BY 4.0
Commercial use
the licence allows it

No 3D scan of Acrothoracica 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 itCirripedia through timeFormations of the CarboniferousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Gruvel 1905)