Pycnactis

No picture of Pycnactis was found. Wikipedia, Wikidata and iDigBio were searched and had none. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Pycnactis, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
LykophyllidaePBDB
Diet
suspension feederPBDB, for Rugosa
Life habit
epifaunalPBDB, for Rugosa
Motility
stationary, attachedPBDB, for Rugosa
Vision
blindPBDB, for Anthozoa
Environment
marinePBDB, for Rugosa

Time the record covers

At least 12 million years on record.

The record covers at least 443.1 Mya to 430.6 Mya. No occurrence read is dated outside 449.4 Mya to 422.7 Mya.

Ordovician — about 2 of 20 occurrencesOrdovicianSilurian — about 18 of 20 occurrencesSilurian450–449 Mya — about 0.1 occurrences449–448 Mya — about 0.1 occurrences448–447 Mya — about 0.1 occurrences447–446 Mya — about 0.1 occurrences446–445 Mya — about 0.1 occurrences445–444 Mya — about 0.5 occurrences444–443 Mya — about 0.6 occurrences443–443 Mya — about 0.4 occurrences443–442 Mya — about 0.3 occurrences442–441 Mya — about 0.3 occurrences441–440 Mya — about 1 occurrence440–439 Mya — about 2 occurrences439–438 Mya — about 1.0 occurrences438–437 Mya — about 0.8 occurrences437–436 Mya — about 0.8 occurrences436–435 Mya — about 0.8 occurrences435–434 Mya — about 0.8 occurrences434–433 Mya — about 0.8 occurrences433–432 Mya — about 1 occurrence432–431 Mya — about 1 occurrence431–430 Mya — about 1 occurrence430–430 Mya — about 1 occurrence430–429 Mya — about 1 occurrence429–428 Mya — about 1 occurrence428–427 Mya — about 1 occurrence427–426 Mya — about 0.3 occurrences426–425 Mya — about 0.2 occurrences425–424 Mya — about 0.2 occurrences424–423 Mya — about 0.2 occurrences423–422 Mya — about 0.1 occurrences443.1 Mya430.6 Mya449.9 Mya422.2 Mya

20 occurrences of Pycnactis 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

20 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

16 formations

Hidden Valley Dolomite — 36.43°N, 116.63°WHidden Valley Dolomite — 36.72°N, 117.48°WWufeng — 28.00°N, 107.00°EWeir — 48.27°N, 65.08°WBrassfield — 38.10°N, 83.83°WUpper Visby — 57.63°N, 18.30°EMuch Wenlock Limestone — 52.50°N, 2.08°WInwood — 53.17°N, 99.28°WMoose Lake Dolomite — 54.05°N, 100.92°WLojoping — 30.77°N, 111.33°EPengjiayuan — 30.77°N, 111.33°EShihniulan — 28.55°N, 106.87°ETakuan — 27.73°N, 103.88°EXiangshuyuan — 27.50°N, 108.23°EBrinkmarsh Beds — 51.88°N, 2.23°WKuanyinchiao — 27.60°N, 105.42°EShiniulan — 27.30°N, 105.27°E

Loading coastlines…

The named rock units Pycnactis has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.

Pycnactis and its relatives

Silurian

Where Pycnactis and its relatives were recorded in the Silurian.

Found in the same rock

327 taxa

The Paleobiology Database records 20 sites for Pycnactis, 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

12 references

Each of the 20 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 content0

No picture of Pycnactis was found. Wikipedia, Wikidata and iDigBio were searched and had none.

Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Pycnactis, or no answer at all. This entry cannot say which.

No 3D scan of Pycnactis 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.

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itLykophyllidae through timeFormations of the SilurianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Ryder 1926