Petrochirus

Petrochirus is a genus of hermit crabs of the family Diogenidae. There are seven described species of the genus. The genus was described by William Stimpson in 1858.

Petrochirus

Brian Gratwicke · CC BY 2.0 · 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
DiogenidaePBDB
Diet
detritivorePBDB, for Paguroidea
Life habit
epifaunalPBDB, for Decapoda
Motility
actively mobilePBDB, for Malacostraca
Vision
well-developedPBDB, for Malacostraca

Time the record covers

At least 65 million years on record.

The record covers at least 66 Mya to 129 ka. No occurrence read is dated outside 72.2 Mya to 11.7 ka.

Late Cretaceous — about 1 of 50 occurrencesLate CretaceousPaleocene — about 0 of 50 occurrencesEocene — about 13 of 50 occurrencesEoceneOligocene — about 1 of 50 occurrencesOligoceneMiocene — about 25 of 50 occurrencesMiocenePliocene — about 7 of 50 occurrencesPleistocene — about 3 of 50 occurrences74–71 Mya — about 0.2 occurrences71–69 Mya — about 0.4 occurrences69–66 Mya — about 0.4 occurrences66–64 Mya — about 0.0 occurrences56–54 Mya — about 0.8 occurrences54–52 Mya — about 0.9 occurrences52–49 Mya — about 0.9 occurrences49–47 Mya — about 1 occurrence47–44 Mya — about 1 occurrence44–42 Mya — about 1 occurrence42–39 Mya — about 0.7 occurrences39–37 Mya — about 1 occurrence37–34 Mya — about 3 occurrences34–32 Mya — about 0.6 occurrences29–27 Mya — about 0.1 occurrences27–25 Mya — about 0.6 occurrences25–22 Mya — about 1.0 occurrences22–20 Mya — about 2 occurrences20–17 Mya — about 1 occurrence17–15 Mya — about 0.6 occurrences15–12 Mya — about 5 occurrences12–9.8 Mya — about 4 occurrences9.8–7.4 Mya — about 5 occurrences7.4–4.9 Mya — about 7 occurrences4.9–2.5 Mya — about 7 occurrences2.5–0 Mya — about 3 occurrences66 Mya129 ka74 Mya0 Mya

50 occurrences of Petrochirus on record, most of them in the Miocene. 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

50 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

25 formations

Cercado — 19.46°N, 71.19°WCercado — 19.46°N, 71.09°WCayo Agua — 9.17°N, 82.04°WAgueguexquite — 18.07°N, 94.24°WAgueguexquite — 18.08°N, 94.34°WPinczow — 50.47°N, 20.80°ECastillo — 10.37°N, 70.05°WMazantic Shale — 16.00°N, 92.00°WWolfe City — 33.14°N, 96.40°WChipola — 30.50°N, 85.20°WCaloosahatchee — 26.81°N, 81.00°WPort Morant — 17.87°N, 76.32°WArguis — 42.38°N, 0.67°WTubara — 10.87°N, 74.98°WMoin (upper) — 9.99°N, 83.06°WEl Bosque — 16.50°N, 93.07°WSan Juan — 16.72°N, 93.14°WGurabo — 19.53°N, 71.29°WEscudo de Veraguas — 9.09°N, 81.54°WYaviza — 7.88°N, 77.51°WChagres (Rio Indio Facies) — 9.18°N, 80.24°WNancy Point (Lower Part) — 9.15°N, 81.95°WCantaure — 11.94°N, 70.02°WBowden — 17.89°N, 76.31°WFalmouth — 18.48°N, 77.45°WSerraduy — 42.32°N, 0.54°E

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The named rock units Petrochirus has been recovered from, largest first. Drawn where the rock is now, not where it formed. One further formation holds fewer occurrences and is not listed. 17 occurrences have no formation on record, which is common for older literature.

Petrochirus and its relatives

Miocene

Where Petrochirus and its relatives were recorded in the Miocene.

Found in the same rock

535 taxa

The Paleobiology Database records 44 sites for Petrochirus, 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

27 references

Each of the 50 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. 15 further references are not listed. 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 Petrochirus

Credit
Brian Gratwicke
Licence
CC BY 2.0
Commercial use
the licence allows it

No 3D scan of Petrochirus 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 itDiogenidae through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Stimpson 1858