Silenis

Agriopis marginaria (Fabricius), a relative of Silenis — not Silenis itself

Not Silenis. This is Agriopis marginaria (Fabricius), a relative.

via GBIF · CC0 · via GBIF. 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
BairdiocyprididaePBDB
Diet
detritivore, grazerPBDB, for Podocopida
Life habit
epifaunalPBDB, for Podocopida
Motility
actively mobilePBDB, for Ostracoda
Vision
limitedPBDB, for Ostracoda
Environment
marinePBDB, for Ostracoda

Time the record covers

At least 195 million years on record.

The record covers at least 449.5 Mya to 254.14 Mya. No occurrence read is dated outside 454 Mya to 251.902 Mya.

Ordovician — about 1 of 16 occurrencesSilurian — about 4 of 16 occurrencesSilurianDevonian — about 0 of 16 occurrencesCarboniferous — about 0 of 16 occurrencesPermian — about 11 of 16 occurrencesPermianEarly Triassic — about 0 of 16 occurrences458–451 Mya — about 0.7 occurrences451–444 Mya — about 0.3 occurrences444–437 Mya — about 0.6 occurrences437–430 Mya — about 3 occurrences262–255 Mya — about 0.9 occurrences255–248 Mya — about 10 occurrences449.5 Mya254.14 Mya458 Mya248 Mya

16 occurrences of Silenis on record, most of them in the Permian. 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

5 formations

Changxing — 31.08°N, 119.71°EJaani — 58.54°N, 23.44°EJaani — 58.62°N, 22.90°ELinxiang — 33.00°N, 111.00°EShemaha — 55.00°N, 60.00°ENagyvisnyo — 48.14°N, 20.43°E

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The named rock units Silenis has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Silenis and its relatives

Permian

Where Silenis and its relatives were recorded in the Permian.

Found in the same rock

146 taxa

The Paleobiology Database records 15 sites for Silenis, 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

6 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 Agriopis marginaria (Fabricius)

Source
GBIF
Credit
via GBIF
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Silenis 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 itBairdiocyprididae through timeFormations of the PermianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Neckaja 1958