Diogenidae

The Diogenidae are a family of hermit crabs, sometimes known as "left-handed hermit crabs" because in contrast to most other hermit crabs, its left chela (claw) is enlarged instead of the right. It comprises 429 extant species, and a further 47 extinct species, making it the second-largest family of marine hermit crabs, after the Paguridae.

Diogenidae

Hans Hillewaert · CC BY-SA 4.0 · 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
PaguroideaPBDB
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 154 million years on record.

The record covers at least 154.8 Mya to 11.7 ka. No occurrence read is dated outside 157.9 Mya to 0 Mya.

Late Jurassic — about 1 of 197 occurrencesLate JurassicEarly Cretaceous — about 3 of 197 occurrencesEarly CretaceousLate Cretaceous — about 8 of 197 occurrencesLate CretaceousPaleocene — about 5 of 197 occurrencesEocene — about 83 of 197 occurrencesEoceneOligocene — about 3 of 197 occurrencesMiocene — about 58 of 197 occurrencesMiocenePliocene — about 17 of 197 occurrencesPleistocene — about 8 of 197 occurrences161–156 Mya — about 0.7 occurrences156–150 Mya — about 0.3 occurrences129–123 Mya — about 0.2 occurrences123–118 Mya — about 2 occurrences118–113 Mya — about 0.4 occurrences102–97 Mya — about 0.7 occurrences97–91 Mya — about 1 occurrence91–86 Mya — about 0.5 occurrences86–81 Mya — about 0.7 occurrences81–75 Mya — about 1 occurrence75–70 Mya — about 2 occurrences70–64 Mya — about 3 occurrences64–59 Mya — about 3 occurrences59–54 Mya — about 9 occurrences54–48 Mya — about 19 occurrences48–43 Mya — about 25 occurrences43–38 Mya — about 17 occurrences38–32 Mya — about 15 occurrences32–27 Mya — about 1 occurrence27–21 Mya — about 4 occurrences21–16 Mya — about 10 occurrences16–11 Mya — about 22 occurrences11–5.4 Mya — about 23 occurrences5.4–0 Mya — about 36 occurrences154.8 Mya11.7 ka161 Mya0 Mya

197 occurrences of Diogenidae on record, most of them in the Eocene. 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

197 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

51 formations

Serraduy — 42.32°N, 0.54°ECercado — 19.48°N, 71.17°WCercado — 19.58°N, 71.04°WCercado — 19.46°N, 71.09°WSan Juan — 16.14°N, 92.78°WSan Juan — 16.73°N, 93.14°WCayo Agua — 9.14°N, 82.01°WCayo Agua — 9.17°N, 82.04°WBateque — 26.54°N, 112.75°WBateque — 26.91°N, 113.04°WBateque — 26.42°N, 112.58°WUpper Coralline Limestone — 35.93°N, 14.33°EArguis — 42.39°N, 0.68°WArguis — 42.31°N, 0.34°WPinczow — 50.47°N, 20.80°ENdalithoni Limestone — 17.23°S, 178.95°EGurabo — 19.47°N, 71.17°WGurabo — 19.53°N, 71.29°WNdalithoni — 17.24°S, 178.94°WFutuna — 18.96°S, 178.95°WChipola — 30.50°N, 85.20°WAgueguexquite — 18.07°N, 94.24°WAgueguexquite — 18.08°N, 94.34°WCantaure — 11.94°N, 70.02°WBowden — 17.89°N, 76.31°WHoko River — 48.39°N, 124.66°WTepetate — 24.10°N, 110.55°WCastillo — 10.37°N, 70.05°WRancho Nuevo — 25.81°N, 101.12°WMazantic Shale — 16.00°N, 92.00°WMaastricht — 50.83°N, 5.64°EAldwell — 48.22°N, 124.44°WCoon Creek — 34.39°N, 88.89°W

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The named rock units Diogenidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 27 further formations hold fewer occurrences each and are not listed. 108 occurrences have no formation on record, which is common for older literature.

Diogenidae and its relatives

Eocene

Where Diogenidae and its relatives were recorded in the Eocene.

Found in the same rock

1,324 taxa

The Paleobiology Database records 97 sites for Diogenidae, 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

76 references

Each of the 197 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. 64 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 Diogenidae

Credit
Hans Hillewaert
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC Attribution-NonCommercial-ShareAlike
Commercial use
the licence does not allow it

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 itPaguroidea through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Ortmann 1892