Pachysphinctes

Pachysphinctes is an extinct genus of ammonites belonging to the Perisphinctidae family.

Pachysphinctes

Hectonichus · CC BY-SA 4.0 · via Wikipedia/Commons. 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
VirgatosphinctinaePBDB
Diet
carnivorePBDB, for Ammonoidea
Life habit
nektonicPBDB, for Ammonoidea
Motility
fast-movingPBDB, for Ammonoidea
Vision
well-developedPBDB, for Cephalopoda
Environment
marinePBDB, for Cephalopoda

Time the record covers

At least 3 million years on record.

The record covers at least 152.21 Mya to 149.2 Mya. No occurrence read is dated outside 154.8 Mya to 143.1 Mya.

Late Jurassic — about 35 of 35 occurrencesLate JurassicEarly Cretaceous — about 0 of 35 occurrences155–154 Mya — about 2 occurrences154–154 Mya — about 2 occurrences154–154 Mya — about 2 occurrences154–153 Mya — about 2 occurrences153–153 Mya — about 2 occurrences153–152 Mya — about 2 occurrences152–152 Mya — about 2 occurrences152–151 Mya — about 1 occurrence151–151 Mya — about 1 occurrence151–151 Mya — about 1 occurrence151–150 Mya — about 1 occurrence150–150 Mya — about 1 occurrence150–149 Mya — about 1 occurrence149–149 Mya — about 1 occurrence149–149 Mya — about 0.8 occurrences149–148 Mya — about 0.8 occurrences148–148 Mya — about 0.8 occurrences148–147 Mya — about 0.8 occurrences147–147 Mya — about 0.8 occurrences147–146 Mya — about 0.8 occurrences146–146 Mya — about 0.8 occurrences146–146 Mya — about 0.8 occurrences146–145 Mya — about 0.8 occurrences145–145 Mya — about 0.7 occurrences145–144 Mya — about 0.7 occurrences144–144 Mya — about 0.7 occurrences144–143 Mya — about 0.7 occurrences143–143 Mya — about 0.6 occurrences152.21 Mya149.2 Mya155.3 Mya142.6 Mya

35 occurrences of Pachysphinctes on record, most of them in the Late Jurassic. 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

35 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

7 formations

Naifa — 14.28°N, 48.55°ENaifa — 14.27°N, 48.57°ENaifa — 14.34°N, 48.39°EGuasasa — 22.27°N, 84.07°WGuasasa — 22.67°N, 83.55°WSpiti Shale — 32.28°N, 78.02°ESpiti Shale — 32.32°N, 77.95°EAblation Point — 70.75°S, 68.50°WMörnsheim — 48.00°N, 10.00°ELatady — 75.88°S, 68.83°WKatrol — 23.50°N, 70.50°E

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The named rock units Pachysphinctes has been recovered from, largest first. Drawn where the rock is now, not where it formed. 13 occurrences have no formation on record, which is common for older literature.

Pachysphinctes and its relatives

Late Jurassic

Where Pachysphinctes and its relatives were recorded in the Late Jurassic.

Found in the same rock

112 taxa

The Paleobiology Database records 26 sites for Pachysphinctes, 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

11 references

Each of the 35 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 Pachysphinctes

Credit
Hectonichus
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

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

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 itVirgatosphinctinae through timeFormations of the Late JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Dietrich