Callichirus

Callichirus is a genus of crustaceans belonging to the family Callianassidae. It was circumscribed by William Stimpson in 1866.

Callichirus

Thomas Roscoe Rede Stebbing (1835-1926) · Public Domain · 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
mud shrimpPBDB
Sits inside
CallichiridaePBDB
Diet
detritivorePBDB, for Axiidea
Life habit
infaunalPBDB, for Axiidea
Motility
actively mobilePBDB, for Malacostraca
Vision
well-developedPBDB, for Malacostraca

Time the record covers

At least 20 million years on record.

The record covers at least 33.9 Mya to 13.82 Mya. No occurrence read is dated outside 37.71 Mya to 12.8 Mya.

Eocene — about 1 of 3 occurrencesEoceneOligocene — about 0 of 3 occurrencesMiocene — about 2 of 3 occurrencesMiocene38–37 Mya — about 0.1 occurrences37–36 Mya — about 0.2 occurrences36–36 Mya — about 0.2 occurrences36–35 Mya — about 0.2 occurrences35–34 Mya — about 0.2 occurrences24–23 Mya — about 0.1 occurrences23–22 Mya — about 0.1 occurrences22–21 Mya — about 0.1 occurrences21–20 Mya — about 0.1 occurrences20–19 Mya — about 0.1 occurrences19–18 Mya — about 0.1 occurrences18–17 Mya — about 0.1 occurrences17–17 Mya — about 0.1 occurrences17–16 Mya — about 0.1 occurrences14–13 Mya — about 0.6 occurrences13–12 Mya — about 0.4 occurrences33.9 Mya13.82 Mya38.2 Mya12.3 Mya

3 occurrences of Callichirus on record, most of them in the Miocene. 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

3 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

Navidad — 33.86°S, 71.83°WLeitha-limestone — 46.93°N, 17.45°E

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The named rock units Callichirus 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.

Callichirus and its relatives

Miocene

Where Callichirus and its relatives were recorded in the Miocene.

Found in the same rock

96 taxa

The Paleobiology Database records 3 sites for Callichirus, 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

3 references

Each of the 3 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 Callichirus

Credit
Thomas Roscoe Rede Stebbing (1835-1926)
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Callichirus 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 itCallichiridae through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Stimpson 1866)