Pachylyroceras

Pachylyroceras is a large, generally subglobular, Upper Mississippian gonitite and included in the cephalopod subclass Ammonoidea.

Pachylyroceras

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
NeoglyphioceratidaePBDB
Diet
carnivorePBDB, for Ammonoidea
Life habit
nektonicPBDB, for Goniatitida
Motility
fast-movingPBDB, for Ammonoidea
Vision
well-developedPBDB, for Cephalopoda
Environment
marinePBDB, for Cephalopoda

Time the record covers

At most 13 million years on record.

Every occurrence read is dated to somewhere between 339.9 Mya and 326.9 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Carboniferous — about 13 of 13 occurrencesCarboniferous340–339 Mya — about 0.2 occurrences339–339 Mya — about 0.2 occurrences339–339 Mya — about 0.2 occurrences339–338 Mya — about 0.2 occurrences338–338 Mya — about 0.2 occurrences338–337 Mya — about 0.2 occurrences337–337 Mya — about 0.2 occurrences337–336 Mya — about 0.2 occurrences336–336 Mya — about 0.5 occurrences336–335 Mya — about 0.9 occurrences335–335 Mya — about 0.9 occurrences335–334 Mya — about 0.9 occurrences334–334 Mya — about 0.9 occurrences334–333 Mya — about 0.9 occurrences333–333 Mya — about 0.9 occurrences333–332 Mya — about 0.9 occurrences332–332 Mya — about 0.9 occurrences332–332 Mya — about 0.9 occurrences332–331 Mya — about 0.9 occurrences331–331 Mya — about 0.9 occurrences331–330 Mya — about 0.6 occurrences330–330 Mya — about 0.1 occurrences330–329 Mya — about 0.1 occurrences329–329 Mya — about 0.1 occurrences329–328 Mya — about 0.1 occurrences328–328 Mya — about 0.1 occurrences328–327 Mya — about 0.1 occurrences327–327 Mya — about 0.1 occurrences340.4 Mya326.4 Mya

13 occurrences of Pachylyroceras on record, most of them in the Carboniferous. 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

13 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

Ruddell — 35.74°N, 91.64°WRuddell — 35.77°N, 91.69°WBarnett — 31.16°N, 98.69°WBarnett — 31.48°N, 104.87°WDružetić — 44.42°N, 19.81°EJohns Valley — 34.77°N, 94.00°WCaney — 34.49°N, 95.62°W

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

Pachylyroceras and its relatives

Carboniferous

Where Pachylyroceras and its relatives were recorded in the Carboniferous.

Found in the same rock

27 taxa

The Paleobiology Database records 12 sites for Pachylyroceras, 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 13 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 Pachylyroceras

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

No 3D scan of Pachylyroceras 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 itNeoglyphioceratidae through timeFormations of the CarboniferousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Ruzhentsev and Bogoslovskaya 1971