Charybdis japonica

Charybdis japonica, the Asian paddle crab, is a species of swimming crab in the family Portunidae. Charybdis japonica has a hexagonal, concave carapace around 12 centimetres (4.7 in) wide, the whole animal being pale green to olive green in colour.

Charybdis japonica

self · 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
Also called
Japanese swimming crabPBDB
Sits inside
CharybdisPBDB
Diet
carnivorePBDB, for Decapoda
Life habit
semi-infaunalPBDB, for Portunoidea
Motility
actively mobilePBDB, for Malacostraca
Vision
well-developedPBDB, for Malacostraca

Time the record covers

At most 118 thousand years on record.

The one occurrence read is dated to somewhere between 129 ka and 11.7 ka, which is a dating window rather than a span.

Pleistocene — about 1 of 1 occurrencePleistoceneHolocene — about 0 of 1 occurrence147 ka–126 ka Mya — about 0.0 occurrences126 ka–105 ka Mya — about 0.2 occurrences105 ka–84 ka Mya — about 0.2 occurrences84 ka–63 ka Mya — about 0.2 occurrences63 ka–42 ka Mya — about 0.2 occurrences42 ka–21 ka Mya — about 0.2 occurrences21 ka–0 Mya — about 0.1 occurrences629 ka0 Mya

1 occurrence of Charybdis japonica on record, most of them in the Pleistocene. 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

1 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

1 formation

Shimosueyoshi — 35.42°N, 139.59°E

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The named rock units Charybdis japonica has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Charybdis japonica and its relatives

Pleistocene

Where Charybdis japonica and its relatives were recorded in the Pleistocene.

Found in the same rock

No other named taxon is catalogued from that site.

The Paleobiology Database records 1 site for Charybdis japonica, and this reads all of them.

Entered from

1 reference

Each of the 1 occurrence 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. Each entry links to the Paleobiology Database's own record for the work.

Media and terms

Media content1

Picture of Charybdis japonica

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

No 3D scan of Charybdis japonica 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 itCharybdis through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Milne-Edwards 1861)