Majoidea

Majoidea

Hans Hillewaert · CC BY-SA 4.0 · via Wikidata/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
spider crabPBDB
Sits inside
HeterotremataPBDB
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 72 million years on record.

The record covers at least 72.2 Mya to 11.7 ka. No occurrence read is dated outside 83.6 Mya to 0 Mya.

Late Cretaceous — about 5 of 280 occurrencesLate CretaceousPaleocene — about 1 of 280 occurrencesPaleoceneEocene — about 72 of 280 occurrencesEoceneOligocene — about 15 of 280 occurrencesOligoceneMiocene — about 66 of 280 occurrencesMiocenePliocene — about 23 of 280 occurrencesPleistocene — about 65 of 280 occurrences85–82 Mya — about 0.3 occurrences82–80 Mya — about 0.7 occurrences80–77 Mya — about 0.7 occurrences77–74 Mya — about 0.7 occurrences74–71 Mya — about 0.8 occurrences71–68 Mya — about 0.9 occurrences68–65 Mya — about 0.8 occurrences65–63 Mya — about 0.2 occurrences63–60 Mya — about 0.2 occurrences60–57 Mya — about 0.2 occurrences57–54 Mya — about 3 occurrences54–51 Mya — about 5 occurrences51–48 Mya — about 5 occurrences48–45 Mya — about 10 occurrences45–43 Mya — about 11 occurrences43–40 Mya — about 11 occurrences40–37 Mya — about 13 occurrences37–34 Mya — about 13 occurrences34–31 Mya — about 4 occurrences31–28 Mya — about 4 occurrences28–26 Mya — about 4 occurrences26–23 Mya — about 5 occurrences23–20 Mya — about 6 occurrences20–17 Mya — about 8 occurrences17–14 Mya — about 7 occurrences14–11 Mya — about 25 occurrences11–8.5 Mya — about 10 occurrences8.5–5.7 Mya — about 9 occurrences5.7–2.8 Mya — about 21 occurrences2.8–0 Mya — about 101 occurrences72.2 Mya11.7 ka85 Mya0 Mya

280 occurrences of Majoidea 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

280 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

74 formations

Coral Rock — 13.07°N, 59.52°WCoral Rock — 13.09°N, 59.60°WCoral Rock — 13.19°N, 59.63°WCoral Rock — 13.33°N, 59.63°WCoral Rock — 13.04°N, 59.52°WCastle Hayne — 34.63°N, 77.75°WCastle Hayne — 34.64°N, 77.67°WCastle Hayne — 34.37°N, 77.84°WCastle Hayne — 34.84°N, 77.55°WPalos Verdes Sand — 33.99°N, 118.45°WPalos Verdes Sand — 33.60°N, 117.88°WSan Pedro — 33.80°N, 118.17°WSan Pedro — 32.67°N, 117.14°WSandakan — 5.88°N, 118.06°ESandakan — 5.86°N, 118.03°EMontpelier — 18.47°N, 77.58°WMargas de Pamplona — 42.48°N, 0.25°WMargas de Pamplona — 42.47°N, 0.23°WNdalithoni Limestone — 17.23°S, 178.95°EUpper Coralline Limestone — 35.93°N, 14.33°EUpper Coralline Limestone — 35.92°N, 14.38°ENdalithoni — 17.24°S, 178.94°WPysht — 48.18°N, 124.05°WPysht — 48.16°N, 123.96°WPysht — 48.17°N, 123.94°WPort Morant — 17.87°N, 76.32°WColl de Malla Marl — 41.94°N, 2.32°EColl de Malla Marl — 42.01°N, 2.83°EColl de Malla Marl — 41.95°N, 2.33°EColl de Malla Marl — 41.99°N, 2.42°ELondon Clay — 51.42°N, 0.82°ELondon Clay — 51.70°N, 0.76°ECalcareniti di Castelgomberto — 45.43°N, 11.52°ELillo — 51.26°N, 4.21°ELillo — 51.29°N, 4.25°ERoda — 42.44°N, 0.26°EBowden — 17.89°N, 76.31°WFalmouth — 18.48°N, 77.45°WIsland Sandstone — 42.03°S, 171.35°EPuerto Madryn — 42.58°S, 64.27°WAcredale — 36.79°N, 76.17°WMaikop — 44.38°N, 39.78°ESan Pedro Sand — 33.74°N, 118.28°W

Loading coastlines…

The named rock units Majoidea has been recovered from, largest first. Drawn where the rock is now, not where it formed. 50 further formations hold fewer occurrences each and are not listed. 126 occurrences have no formation on record, which is common for older literature.

Majoidea and its relatives

Eocene

Where Majoidea and its relatives were recorded in the Eocene.

Found in the same rock

2,158 taxa

The Paleobiology Database records 151 sites for Majoidea, 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

104 references

Each of the 280 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. 92 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 Majoidea

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

No 3D scan of Majoidea 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.

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itHeterotremata through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Samouelle 1819