Ranina

Ranina is a genus of crabs belonging to the family Raninidae. It has two extant species.

Ranina

Hectonichus · CC BY-SA 3.0 · 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
RanininaePBDB
Diet
carnivorePBDB, for Decapoda
Life habit
semi-infaunalPBDB, for Raninoidia
Motility
actively mobilePBDB, for Malacostraca
Vision
well-developedPBDB, for Malacostraca

Time the record covers

At least 56 million years on record.

The record covers at least 61.66 Mya to 5.333 Mya. No occurrence read is dated outside 66 Mya to 2.58 Mya.

Late Cretaceous — about 0 of 40 occurrencesPaleocene — about 1 of 40 occurrencesPaleoceneEocene — about 23 of 40 occurrencesEoceneOligocene — about 4 of 40 occurrencesOligoceneMiocene — about 8 of 40 occurrencesMiocenePliocene — about 4 of 40 occurrencesPleistocene — about 0 of 40 occurrences67–65 Mya — about 0.2 occurrences65–63 Mya — about 0.6 occurrences63–61 Mya — about 0.3 occurrences61–58 Mya — about 0.1 occurrences58–56 Mya — about 0.1 occurrences56–54 Mya — about 1 occurrence54–52 Mya — about 1 occurrence52–50 Mya — about 1 occurrence50–47 Mya — about 2 occurrences47–45 Mya — about 3 occurrences45–43 Mya — about 3 occurrences43–41 Mya — about 3 occurrences41–39 Mya — about 3 occurrences39–36 Mya — about 2 occurrences36–34 Mya — about 2 occurrences34–32 Mya — about 1 occurrence32–30 Mya — about 1 occurrence30–28 Mya — about 1 occurrence28–25 Mya — about 0.4 occurrences25–23 Mya — about 0.3 occurrences23–21 Mya — about 1 occurrence21–19 Mya — about 2 occurrences19–17 Mya — about 2 occurrences17–15 Mya — about 2 occurrences15–12 Mya — about 2 occurrences12–10 Mya — about 0.5 occurrences5.7–3.5 Mya — about 3 occurrences3.5–1.3 Mya — about 1 occurrence61.66 Mya5.333 Mya67 Mya1 Mya

40 occurrences of Ranina on record, most of them in the Eocene. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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

40 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

15 formations

Santee Limestone — 33.45°N, 80.16°WSantee Limestone — 33.33°N, 80.15°WSantee Limestone — 33.33°N, 79.69°WBateque — 26.75°N, 113.00°WBateque — 26.45°N, 113.00°WBateque — 26.42°N, 112.58°WGlendon — 31.54°N, 88.06°WGlendon — 30.90°N, 84.58°WGlendon — 31.56°N, 88.03°WNdalithoni Limestone — 17.23°S, 178.95°EFutuna Limestone — 18.22°S, 178.78°EFutuna Limestone — 18.45°S, 178.48°ENdalithoni — 17.24°S, 178.94°WFutuna — 18.44°S, 178.47°WFutuna — 18.22°S, 178.80°WCastle Hayne — 34.64°N, 77.65°WGlendon Limestone — 31.67°N, 88.65°WChiampo — 45.53°N, 11.25°ETepetate — 27.31°N, 112.77°WSzoc Limestone — 47.03°N, 17.52°ECannonball — 46.66°N, 100.40°WEl Bosque — 16.50°N, 93.07°WTuxpan — 20.54°N, 97.46°W

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The named rock units Ranina has been recovered from, largest first. Drawn where the rock is now, not where it formed. 15 occurrences have no formation on record, which is common for older literature.

Ranina and its relatives

Eocene

Where Ranina and its relatives were recorded in the Eocene.

Found in the same rock

325 taxa

The Paleobiology Database records 24 sites for Ranina, 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

20 references

Each of the 40 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. 8 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 Ranina

Credit
Hectonichus
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC0 Public Domain
Commercial use
the licence allows 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 itRanininae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Feldmann et al. 1996