Protetragonites

Protetragonites is an extinct genus of ammonoid cephalopods belonging to the family Lytoceratidae. These fast-moving nektonic carnivores lived from the Jurassic period Tithonian age to the Cretaceous period Aptian age.

Protetragonites

Hectonichus · CC BY-SA 3.0 · 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
ProtetragonitidaePBDB
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 140 million years on record.

The record covers at least 241.464 Mya to 100.5 Mya. No occurrence read is dated outside 250.8 Mya to 93.9 Mya.

Permian — about 0 of 125 occurrencesEarly Triassic — about 0 of 125 occurrencesMiddle Triassic — about 1 of 125 occurrencesLate Triassic — about 0 of 125 occurrencesEarly Jurassic — about 0 of 125 occurrencesMiddle Jurassic — about 0 of 125 occurrencesLate Jurassic — about 8 of 125 occurrencesLate JurassicEarly Cretaceous — about 115 of 125 occurrencesEarly CretaceousLate Cretaceous — about 1 of 125 occurrences254–248 Mya — about 0.2 occurrences248–243 Mya — about 0.6 occurrences243–238 Mya — about 0.2 occurrences161–156 Mya — about 0.6 occurrences156–151 Mya — about 0.4 occurrences151–145 Mya — about 6 occurrences145–140 Mya — about 6 occurrences140–134 Mya — about 21 occurrences134–129 Mya — about 15 occurrences129–123 Mya — about 37 occurrences123–118 Mya — about 29 occurrences118–113 Mya — about 3 occurrences113–107 Mya — about 3 occurrences107–102 Mya — about 2 occurrences102–96 Mya — about 1.0 occurrences96–91 Mya — about 0.3 occurrences241.464 Mya100.5 Mya254 Mya91 Mya

125 occurrences of Protetragonites on record, most of them in the Early Cretaceous. 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

125 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

19 formations

Donji Milanovac — 44.53°N, 22.04°ERossfeld — 47.69°N, 13.66°ERossfeld — 47.79°N, 14.52°EPieniny Limestone — 49.42°N, 20.30°EPieniny Limestone — 49.45°N, 19.98°EPieniny Limestone — 49.43°N, 20.03°ESogukcam — 40.82°N, 42.15°EBugarone — 43.75°N, 13.02°ESteinmühl — 47.91°N, 14.35°EBiancone — 45.58°N, 11.12°ELabatlan Sandstone — 47.75°N, 18.50°EBersek Marl — 47.75°N, 18.50°EMogyorósdomb Limestone — 47.17°N, 17.79°EOued Tidzi — 31.21°N, 7.88°WMraznica — 49.03°N, 18.33°EMarnes Bleues — 44.33°N, 5.17°EGrès verts helvétiques — 45.99°N, 6.58°ERio Hatillo — 19.17°N, 70.67°WMaiolica — 45.75°N, 9.48°EPuez — 46.59°N, 11.79°EImpressamergel — 48.18°N, 8.80°EChaiburi — 7.62°N, 100.08°E

Loading coastlines…

The named rock units Protetragonites has been recovered from, largest first. Drawn where the rock is now, not where it formed. 77 occurrences have no formation on record, which is common for older literature.

Protetragonites and its relatives

Early Cretaceous

Where Protetragonites and its relatives were recorded in the Early Cretaceous.

Found in the same rock

729 taxa

The Paleobiology Database records 107 sites for Protetragonites, 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

39 references

Each of the 125 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. 27 further references are not listed. 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 Protetragonites

Credit
Hectonichus
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan of Protetragonites 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 itProtetragonitidae through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Hyatt 1900)