Pycnomphalus obesus

Pycnomphalus obesus

via iDigBio · via iDigBio. 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
PycnomphalusPBDB
Diet
detritivorePBDB, for Anomphalidae
Life habit
epifaunalPBDB, for Anomphalidae
Motility
actively mobilePBDB, for Anomphalidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 18 million years on record.

The record covers at least 445.5 Mya to 426.7 Mya. No occurrence read is dated outside 449.6 Mya to 422.7 Mya.

Ordovician — about 1 of 9 occurrencesOrdovicianSilurian — about 8 of 9 occurrencesSilurian450–449 Mya — about 0.1 occurrences449–448 Mya — about 0.2 occurrences448–447 Mya — about 0.2 occurrences447–446 Mya — about 0.2 occurrences446–445 Mya — about 0.2 occurrences439–438 Mya — about 0.1 occurrences438–437 Mya — about 0.2 occurrences437–436 Mya — about 0.2 occurrences436–435 Mya — about 0.2 occurrences435–434 Mya — about 0.2 occurrences434–433 Mya — about 0.2 occurrences433–432 Mya — about 0.3 occurrences432–431 Mya — about 0.5 occurrences431–431 Mya — about 0.5 occurrences431–430 Mya — about 0.1 occurrences430–429 Mya — about 0.1 occurrences429–428 Mya — about 0.1 occurrences428–427 Mya — about 0.1 occurrences427–426 Mya — about 1 occurrence426–425 Mya — about 2 occurrences425–424 Mya — about 1 occurrence424–423 Mya — about 1 occurrence423–422 Mya — about 0.4 occurrences445.5 Mya426.7 Mya450.1 Mya422.2 Mya

9 occurrences of Pycnomphalus obesus 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

9 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

Guelph — 43.68°N, 80.43°WGuelph — 43.34°N, 80.32°WGuelph — 44.18°N, 80.82°WGuelph — 43.43°N, 80.31°WLower Visby — 57.50°N, 18.55°ECape Phillips — 75.80°N, 94.50°WMiaokao — 25.53°N, 103.68°ERacine Dolomite — 43.05°N, 88.02°W

Loading coastlines…

The named rock units Pycnomphalus obesus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Pycnomphalus obesus and its relatives

Silurian

Where Pycnomphalus obesus and its relatives were recorded in the Silurian.

Found in the same rock

194 taxa

The Paleobiology Database records 9 sites for Pycnomphalus obesus, 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

7 references

Each of the 9 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 Pycnomphalus obesus

Source
iDigBio
Credit
via iDigBio
Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record

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 itPycnomphalus through timeFormations of the SilurianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Lindström 1884