Cyclonema varicosum

Cyclonema varicosum

Yale Peabody Museum · 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
CyclonemaPBDB
Diet
coprophage, deposit feederPBDB, for Cyclonema
Life habit
epifaunalPBDB, for Cyclonema
Motility
facultatively mobile, epibiontPBDB, for Cyclonema
Vision
limitedPBDB, for Gastropoda
Environment
marinePBDB, for Platyceratidae

Time the record covers

At least 12 million years on record.

The record covers at least 451 Mya to 438.6 Mya. No occurrence read is dated outside 457.3 Mya to 432.9 Mya.

Ordovician — about 15 of 24 occurrencesOrdovicianSilurian — about 9 of 24 occurrencesSilurian458–457 Mya — about 0.6 occurrences457–456 Mya — about 2 occurrences456–455 Mya — about 2 occurrences455–454 Mya — about 2 occurrences454–454 Mya — about 2 occurrences454–453 Mya — about 2 occurrences453–452 Mya — about 2 occurrences452–451 Mya — about 2 occurrences451–450 Mya — about 2 occurrences450–449 Mya — about 0.9 occurrences443–443 Mya — about 0.1 occurrences443–442 Mya — about 0.1 occurrences442–441 Mya — about 0.1 occurrences441–440 Mya — about 0.1 occurrences440–439 Mya — about 0.1 occurrences439–438 Mya — about 0.5 occurrences438–437 Mya — about 1 occurrence437–437 Mya — about 1 occurrence437–436 Mya — about 1 occurrence436–435 Mya — about 1 occurrence435–434 Mya — about 1 occurrence434–433 Mya — about 1 occurrence433–432 Mya — about 0.5 occurrences451 Mya438.6 Mya457.8 Mya432.4 Mya

24 occurrences of Cyclonema varicosum on record, most of them in the Ordovician. 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

24 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

14 formations

Catheys — 35.50°N, 86.50°WDunleith — 42.00°N, 90.50°WSauquoit — 43.13°N, 75.59°WSauquoit — 43.03°N, 75.28°WWillowvale — 43.04°N, 75.36°WWillowvale — 43.03°N, 75.28°WIon — 42.00°N, 90.50°WWilliamson Shale — 43.00°N, 76.00°WWilliamson Shale — 43.00°N, 75.00°WPlatteville — 46.00°N, 94.00°WDecorah Shale — 46.00°N, 94.00°WCummingsville — 46.00°N, 94.00°WSpechts Ferry — 42.00°N, 90.50°WGuttenberg — 42.00°N, 90.50°WWilliamson — 43.24°N, 76.14°WBigby-Cannon — 36.17°N, 86.78°WProsser — 43.70°N, 92.27°W

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

Cyclonema varicosum and its relatives

Ordovician

Where Cyclonema varicosum and its relatives were recorded in the Ordovician.

Found in the same rock

286 taxa

The Paleobiology Database records 24 sites for Cyclonema varicosum, 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

5 references

Each of the 24 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 Cyclonema varicosum

Source
GBIF
Credit
Yale Peabody Museum
Licence
CC0
Commercial use
the licence allows it

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

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

Keep going

What may have been alongside itCyclonema through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Hall 1861