Stylonurina

Stylonurina is one of two suborders of eurypterids, a group of extinct arthropods commonly known as "sea scorpions". Members of the suborder are collectively and informally known as "stylonurine eurypterids" or "stylonurines". They are known from deposits primarily in Europe and North America, but also in Siberia.

Stylonurina

Super Dromaeosaurus · 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
EurypteridaPBDB
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 198 million years on record.

The record covers at least 452.8 Mya to 254.14 Mya. No occurrence read is dated outside 458.2 Mya to 251.902 Mya.

Ordovician — about 1 of 98 occurrencesOrdovicianSilurian — about 39 of 98 occurrencesSilurianDevonian — about 33 of 98 occurrencesDevonianCarboniferous — about 20 of 98 occurrencesCarboniferousPermian — about 5 of 98 occurrencesPermianEarly Triassic — about 0 of 98 occurrences462–455 Mya — about 0.6 occurrences455–448 Mya — about 0.4 occurrences448–441 Mya — about 3 occurrences441–434 Mya — about 12 occurrences434–427 Mya — about 11 occurrences427–419 Mya — about 14 occurrences419–412 Mya — about 13 occurrences412–405 Mya — about 4 occurrences405–398 Mya — about 3 occurrences398–391 Mya — about 1 occurrence391–384 Mya — about 0.6 occurrences384–377 Mya — about 2 occurrences377–369 Mya — about 2 occurrences369–362 Mya — about 4 occurrences362–355 Mya — about 3 occurrences355–348 Mya — about 2 occurrences348–341 Mya — about 2 occurrences341–334 Mya — about 1 occurrence334–326 Mya — about 2 occurrences326–319 Mya — about 1 occurrence319–312 Mya — about 2 occurrences312–305 Mya — about 5 occurrences305–298 Mya — about 4 occurrences291–284 Mya — about 2 occurrences284–276 Mya — about 2 occurrences276–269 Mya — about 0.5 occurrences255–248 Mya — about 1 occurrence452.8 Mya254.14 Mya462 Mya248 Mya

98 occurrences of Stylonurina on record, most of them in the Silurian. 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

98 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

54 formations

Reservoir — 56.00°N, 3.00°WReservoir — 55.81°N, 3.35°WShawangunk — 40.98°N, 75.14°WShawangunk — 41.47°N, 74.54°WSundvollen — 60.17°N, 10.30°ESundvollen — 59.92°N, 10.75°EDundee Flagstone — 57.00°N, 4.00°WSlot Burn — 55.65°N, 3.92°WSwope — 41.07°N, 96.08°WSwope — 41.47°N, 96.01°WSwope — 41.35°N, 95.88°WDownton Castle Sandstone — 52.37°N, 2.73°WDownton Castle Sandstone — 52.43°N, 2.81°WMatarak — 54.12°N, 91.43°EMatarak — 53.33°N, 90.00°EDennis — 41.14°N, 95.98°WDennis — 41.07°N, 96.18°WZub — 76.00°N, 104.00°EPeel Sound — 73.77°N, 98.48°WBear Rock — 68.18°N, 125.84°WCoal Measures — 51.30°N, 2.45°WCoal Measures — 55.87°N, 3.96°WPrice — 37.28°N, 80.42°WPrice — 37.05°N, 80.80°WFiddlers Green — 42.85°N, 78.80°WKokomo — 40.48°N, 86.13°WWills Creek — 38.95°N, 79.00°WWabash — 40.48°N, 86.18°WPatrick Burn — 55.65°N, 3.92°WKip Burn — 55.65°N, 3.92°WFish Bed — 55.52°N, 3.98°WTemeside Shale — 52.37°N, 2.73°WLievin — 50.42°N, 2.77°EHermit Shale — 36.07°N, 112.13°W

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The named rock units Stylonurina has been recovered from, largest first. Drawn where the rock is now, not where it formed. 30 further formations hold fewer occurrences each and are not listed. 8 occurrences have no formation on record, which is common for older literature.

Stylonurina and its relatives

Silurian

Where Stylonurina and its relatives were recorded in the Silurian.

Found in the same rock

702 taxa

The Paleobiology Database records 70 sites for Stylonurina, 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

42 references

Each of the 98 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. 30 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 Stylonurina

Credit
Super Dromaeosaurus
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

No 3D scan of Stylonurina 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 itEurypterida through timeFormations of the SilurianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Novojilov 1962