Acanthochirana

Acanthochirana is an extinct genus of prawn that existed during the upper Jurassic period. It was named by E. Strand in 1928. They are distinguished from the related genus Aeger by the presence of teeth on the rostrum, which are absent in Aeger.

Acanthochirana

Ghedoghedo · CC BY-SA 3.0 · 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
AegeridaePBDB
Diet
carnivorePBDB, for Decapoda
Life habit
semi-infaunalPBDB, for Penaeoidea
Motility
actively mobilePBDB, for Penaeoidea
Vision
well-developedPBDB, for Malacostraca

Time the record covers

At least 142 million years on record.

The record covers at least 243.43 Mya to 100.5 Mya. No occurrence read is dated outside 244.4 Mya to 93.9 Mya.

Early Triassic — about 0 of 13 occurrencesMiddle Triassic — about 1 of 13 occurrencesLate Triassic — about 6 of 13 occurrencesLate TriassicEarly Jurassic — about 0 of 13 occurrencesMiddle Jurassic — about 0 of 13 occurrencesLate Jurassic — about 3 of 13 occurrencesLate JurassicEarly Cretaceous — about 0 of 13 occurrencesLate Cretaceous — about 3 of 13 occurrences247–242 Mya — about 1 occurrence216–211 Mya — about 6 occurrences153–148 Mya — about 2 occurrences148–143 Mya — about 1 occurrence101–96 Mya — about 2 occurrences96–91 Mya — about 1 occurrence243.43 Mya100.5 Mya247 Mya91 Mya

13 occurrences of Acanthochirana on record, most of them in the Late Triassic. 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

13 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

5 formations

Dolomia di Forni — 46.38°N, 12.59°EDolomia di Forni — 46.39°N, 12.79°EDolomia di Forni — 46.39°N, 12.86°ESolnhofen — 48.91°N, 11.14°ESolnhofen — 48.90°N, 11.18°ELiegende Bankkalk — 48.12°N, 8.87°EGuanling — 24.71°N, 104.33°EZorzino Limestone — 45.78°N, 9.82°E

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The named rock units Acanthochirana has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.

Acanthochirana and its relatives

Late Triassic

Where Acanthochirana and its relatives were recorded in the Late Triassic.

Found in the same rock

147 taxa

The Paleobiology Database records 10 sites for Acanthochirana, 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

8 references

Each of the 13 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 Acanthochirana

Credit
Ghedoghedo
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan of Acanthochirana 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 itAegeridae through timeFormations of the Late TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Strand 1928