Poraniidae

Poraniidae is a family of starfishes in the order Valvatida.

Poraniidae

Arnstein Rønning · 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
ValvatidaPBDB
Diet
carnivorePBDB, for Asteroidea
Life habit
low-level epifaunalPBDB, for Asteroidea
Motility
slow-movingPBDB, for Asteroidea
Vision
limitedPBDB, for Asteroidea
Environment
marinePBDB, for Echinodermata

Time the record covers

At least 58 million years on record.

The record covers at least 227.3 Mya to 168.6 Mya. No occurrence read is dated outside 233.6 Mya to 168.2 Mya.

Late Triassic — about 2 of 3 occurrencesLate TriassicEarly Jurassic — about 0 of 3 occurrencesMiddle Jurassic — about 1 of 3 occurrencesMiddle Jurassic235–233 Mya — about 0.2 occurrences233–230 Mya — about 0.4 occurrences230–228 Mya — about 0.4 occurrences228–226 Mya — about 0.2 occurrences226–224 Mya — about 0.1 occurrences224–221 Mya — about 0.1 occurrences221–219 Mya — about 0.1 occurrences219–217 Mya — about 0.1 occurrences217–215 Mya — about 0.1 occurrences215–212 Mya — about 0.1 occurrences212–210 Mya — about 0.1 occurrences210–208 Mya — about 0.1 occurrences208–205 Mya — about 0.1 occurrences169–167 Mya — about 1 occurrence227.3 Mya168.6 Mya235 Mya167 Mya

3 occurrences of Poraniidae on record, most of them in the Late Triassic. 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

3 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

2 formations

Dolomia Principale — 45.80°N, 9.67°EMartuljek Limestone — 46.40°N, 13.84°E

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The named rock units Poraniidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Poraniidae and its relatives

Late Triassic

Where Poraniidae and its relatives were recorded in the Late Triassic.

Found in the same rock

31 taxa

The Paleobiology Database records 3 sites for Poraniidae, 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

3 references

Each of the 3 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. Each entry links to the Paleobiology Database's own record for the work.

Media and terms

Media content1

Picture of Poraniidae

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

No 3D scan of Poraniidae was found in Smithsonian Open Access and Sketchfab.

MorphoSource 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 itValvatida through timeFormations of the Late TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Perrier 1893