Pagurus

Pagurus is a genus of hermit crabs in the family Paguridae. Like other hermit crabs, their abdomen is not calcified and they use gastropod shells as protection. These marine decapod crustaceans are omnivorous, but mostly prey on small animals and scavenge carrion. Trigonocheirus and Pagurixus used to be considered subgenera of Pagurus, but the former is nowadays included in Orthopagurus, while the latter has been separated as a distinct genus.

Pagurus

dphershman · 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
PaguridaePBDB
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 165 million years on record.

The record covers at least 165.3 Mya to 11.7 ka. No occurrence read is dated outside 168.2 Mya to 0 Mya.

Middle Jurassic — about 1 of 60 occurrencesLate Jurassic — about 1 of 60 occurrencesLate JurassicEarly Cretaceous — about 7 of 60 occurrencesEarly CretaceousLate Cretaceous — about 2 of 60 occurrencesLate CretaceousPaleocene — about 1 of 60 occurrencesEocene — about 9 of 60 occurrencesEoceneOligocene — about 7 of 60 occurrencesMiocene — about 11 of 60 occurrencesMiocenePliocene — about 6 of 60 occurrencesPleistocene — about 3 of 60 occurrences172–166 Mya — about 0.8 occurrences166–160 Mya — about 0.7 occurrences160–154 Mya — about 0.5 occurrences126–120 Mya — about 0.7 occurrences120–114 Mya — about 0.3 occurrences114–109 Mya — about 5 occurrences109–103 Mya — about 1 occurrence103–97 Mya — about 0.3 occurrences92–86 Mya — about 0.6 occurrences86–80 Mya — about 0.6 occurrences80–74 Mya — about 0.3 occurrences74–69 Mya — about 0.3 occurrences69–63 Mya — about 0.2 occurrences63–57 Mya — about 0.8 occurrences57–51 Mya — about 1 occurrence51–46 Mya — about 2 occurrences46–40 Mya — about 4 occurrences40–34 Mya — about 2 occurrences34–29 Mya — about 5 occurrences29–23 Mya — about 3 occurrences23–17 Mya — about 1 occurrence17–11 Mya — about 7 occurrences11–5.7 Mya — about 2 occurrences5.7–0 Mya — about 21 occurrences165.3 Mya11.7 ka172 Mya0 Mya

60 occurrences of Pagurus on record. 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

60 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

23 formations

Glen Rose Limestone — 29.73°N, 99.06°WGlen Rose Limestone — 30.20°N, 98.38°WGlen Rose Limestone — 29.87°N, 98.73°WGlen Rose Limestone — 29.95°N, 98.76°WMakah — 48.34°N, 124.50°WCalcaire de Caen — 48.97°N, 0.13°WMount Laurel — 40.26°N, 74.27°WTalbot — 38.07°N, 76.36°WEutaw — 32.35°N, 86.35°WAlzey — 49.83°N, 7.72°ECastell'Arquato — 44.86°N, 9.88°ETen-no — 34.82°N, 138.05°EUpper Coralline Limestone — 35.93°N, 14.33°EComanche Peak Limestone — 30.36°N, 97.79°WAldwell — 48.22°N, 124.44°WFutuna — 18.96°S, 178.95°WSan Pedro Sand — 33.74°N, 118.28°WLillebælt Clay — 55.60°N, 9.82°EOxford Clay — 52.33°N, 0.09°WCalcareniti di Castelgomberto — 45.43°N, 11.52°ECastelgomberto — 45.50°N, 11.40°EMarnes de Saint-Etienne-d’Orthe — 43.57°N, 1.10°WLillo — 51.29°N, 4.25°ESerraduy — 42.32°N, 0.54°EMaadi — 30.03°N, 31.28°ETlayúa — 18.59°N, 97.90°W

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The named rock units Pagurus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 33 occurrences have no formation on record, which is common for older literature.

Found in the same rock

1,156 taxa

The Paleobiology Database records 38 sites for Pagurus, 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

38 references

Each of the 60 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. 26 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 content2

Picture of Pagurus

Credit
dphershman
Licence
CC BY 2.0
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC Attribution
Commercial use
cannot be read from the licence given — check the record

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 itPaguridae through timeThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Fabricius 1775