Dromioidea

Dromioidea is a superfamily of crabs mostly found in Madagascar. Dromioidea belongs to the group Dromiacea, taxonomically ranked as a section, which is the most basal grouping of Brachyura crabs. Dromiacea likely diverged from the rest of Brachyura around the Late Triassic or Early Jurassic, and the earliest fossils attributable to the Dromioidea date from the Late Jurassic.

Dromioidea

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
DromiaceaPBDB
Diet
carnivorePBDB, for Decapoda
Life habit
epifaunalPBDB, for Decapoda
Motility
actively mobilePBDB, for Malacostraca
Vision
well-developedPBDB, for Malacostraca

Time the record covers

At least 132 million years on record.

The record covers at least 132.6 Mya to 11.7 ka. No occurrence read is dated outside 143.1 Mya to 0 Mya.

Late Jurassic — about 0 of 160 occurrencesEarly Cretaceous — about 9 of 160 occurrencesEarly CretaceousLate Cretaceous — about 21 of 160 occurrencesLate CretaceousPaleocene — about 11 of 160 occurrencesEocene — about 75 of 160 occurrencesEoceneOligocene — about 11 of 160 occurrencesMiocene — about 29 of 160 occurrencesMiocenePliocene — about 3 of 160 occurrencesPleistocene — about 1 of 160 occurrences146–141 Mya — about 0.0 occurrences141–136 Mya — about 0.3 occurrences136–131 Mya — about 0.9 occurrences131–127 Mya — about 0.1 occurrences127–122 Mya — about 0.1 occurrences122–117 Mya — about 0.3 occurrences117–112 Mya — about 2 occurrences112–107 Mya — about 2 occurrences107–102 Mya — about 2 occurrences102–97 Mya — about 4 occurrences97–92 Mya — about 3 occurrences92–88 Mya — about 0.5 occurrences88–83 Mya — about 4 occurrences83–78 Mya — about 2 occurrences78–73 Mya — about 2 occurrences73–68 Mya — about 4 occurrences68–63 Mya — about 6 occurrences63–58 Mya — about 5 occurrences58–54 Mya — about 14 occurrences54–49 Mya — about 23 occurrences49–44 Mya — about 17 occurrences44–39 Mya — about 10 occurrences39–34 Mya — about 13 occurrences34–29 Mya — about 8 occurrences29–24 Mya — about 3 occurrences24–19 Mya — about 2 occurrences19–15 Mya — about 4 occurrences15–9.7 Mya — about 18 occurrences9.7–4.9 Mya — about 5 occurrences4.9–0 Mya — about 5 occurrences132.6 Mya11.7 ka146 Mya0 Mya

160 occurrences of Dromioidea 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

160 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

43 formations

Serraduy — 42.32°N, 0.54°ELondon Clay — 51.51°N, 0.24°ELondon Clay — 51.42°N, 0.90°ELondon Clay — 51.58°N, 0.15°WLondon Clay — 50.78°N, 0.70°WBuda Limestone — 30.26°N, 97.75°WBuda Limestone — 30.29°N, 97.87°WBuda Limestone — 30.26°N, 97.77°WLeitha Limestone — 47.83°N, 16.48°ECalcareniti di Castelgomberto — 45.43°N, 11.52°EPriabona Marl — 45.47°N, 10.97°EPinczow — 50.47°N, 20.80°ENdalithoni — 17.24°S, 178.94°WElmore — 50.80°N, 1.20°WWills Point — 31.67°N, 96.57°WWills Point — 31.93°N, 96.43°WCastelgomberto — 45.50°N, 11.40°ECastelgomberto — 45.58°N, 11.38°EMargas de Pamplona — 42.47°N, 0.23°WMontpelier — 18.47°N, 77.58°WGault — 51.94°N, 0.64°WMunday’s Hill Phosphatic Sandstone — 51.92°N, 0.67°WVincentown — 39.97°N, 74.68°WTortachilla — 35.13°S, 138.48°ERosario? — 31.00°N, 116.00°WNdalithoni Limestone — 17.23°S, 178.95°EBoom — 51.16°N, 4.12°EUpper Coralline Limestone — 35.93°N, 14.33°ECárdenas — 22.00°N, 99.64°WGreensand — 51.08°N, 1.17°EDenton — 33.78°N, 96.52°W

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The named rock units Dromioidea has been recovered from, largest first. Drawn where the rock is now, not where it formed. 19 further formations hold fewer occurrences each and are not listed. 82 occurrences have no formation on record, which is common for older literature.

Dromioidea and its relatives

Eocene

Where Dromioidea and its relatives were recorded in the Eocene.

Found in the same rock

1,963 taxa

The Paleobiology Database records 83 sites for Dromioidea, 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

73 references

Each of the 160 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. 61 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 Dromioidea

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

No 3D scan of Dromioidea was found in MorphoSource and Sketchfab.

Smithsonian Open Access was 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 itDromiacea through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. De Haan 1833