Stylonuridae

Stylonuridae is a family of eurypterids, an extinct group of chelicerate arthropods commonly known as "sea scorpions". The family is one of two families contained in the superfamily Stylonuroidea, which in turn is one of four superfamilies classified as part of the suborder Stylonurina.

Stylonuridae

John Mason Clarke (1857-1925) and Rudolf Ruedemann (1864-1956) · Public Domain · 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
StylonuroideaPBDB
Diet
carnivorePBDB, for Eurypterida
Life habit
nektobenthicPBDB, for Eurypterida
Motility
actively mobilePBDB, for Eurypterida
Vision
well-developedPBDB, for Eurypterida

Time the record covers

At least 64 million years on record.

The record covers at least 432.9 Mya to 368.5 Mya. No occurrence read is dated outside 443.1 Mya to 358.86 Mya.

Ordovician — about 0 of 16 occurrencesSilurian — about 6 of 16 occurrencesSilurianDevonian — about 10 of 16 occurrencesDevonianCarboniferous — about 0 of 16 occurrences445–442 Mya — about 0.2 occurrences442–439 Mya — about 0.6 occurrences439–436 Mya — about 1 occurrence436–433 Mya — about 1 occurrence433–430 Mya — about 0.3 occurrences430–427 Mya — about 1.0 occurrences427–424 Mya — about 0.6 occurrences424–421 Mya — about 0.6 occurrences421–419 Mya — about 2 occurrences419–416 Mya — about 3 occurrences416–413 Mya — about 3 occurrences413–410 Mya — about 0.2 occurrences383–381 Mya — about 0.1 occurrences381–378 Mya — about 0.1 occurrences378–375 Mya — about 0.1 occurrences375–372 Mya — about 0.1 occurrences372–369 Mya — about 0.1 occurrences369–366 Mya — about 0.9 occurrences366–363 Mya — about 0.3 occurrences363–360 Mya — about 0.1 occurrences360–357 Mya — about 0.1 occurrences432.9 Mya368.5 Mya445 Mya357 Mya

16 occurrences of Stylonuridae on record, most of them in the Devonian. 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

16 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

10 formations

Dundee Flagstone — 57.00°N, 4.00°WShawangunk — 40.98°N, 75.14°WShawangunk — 41.47°N, 74.54°WReservoir — 56.00°N, 3.00°WReservoir — 55.81°N, 3.35°WSundvollen — 59.92°N, 10.75°ELievin — 50.42°N, 2.77°EZub — 76.00°N, 104.00°EPeel Sound — 73.77°N, 98.48°WSoligorsk — 52.88°N, 27.51°ELock Haven — 41.69°N, 77.64°WXitun — 25.51°N, 103.67°E

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The named rock units Stylonuridae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.

Stylonuridae and its relatives

Devonian

Where Stylonuridae and its relatives were recorded in the Devonian.

Found in the same rock

124 taxa

The Paleobiology Database records 14 sites for Stylonuridae, 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

8 references

Each of the 16 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. 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 Stylonuridae

Credit
John Mason Clarke (1857-1925) and Rudolf Ruedemann (1864-1956)
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Stylonuridae 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.

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 itStylonuroidea through timeFormations of the DevonianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Diener 1924