Tropaeum

Tropaeum is an extinct genus of ammonites found throughout the oceans of the world during the Early Cretaceous. As with many other members of the family Ancyloceratidae, there was a trend among species within this genus to uncoil somewhat, in a very similar manner to the genus Lytoceras. The largest species, T. imperator of Australia, had a shell a little over one meter in diameter.

Tropaeum

Apokryltaros at English Wikipedia · CC BY 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
AncyloceratinaePBDB
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 15 million years on record.

The record covers at least 121.4 Mya to 106.3 Mya. No occurrence read is dated outside 137.05 Mya to 100.5 Mya.

Early Cretaceous — about 116 of 116 occurrencesEarly CretaceousLate Cretaceous — about 0 of 116 occurrences138–137 Mya — about 0.0 occurrences137–135 Mya — about 0.1 occurrences135–134 Mya — about 0.1 occurrences134–133 Mya — about 0.1 occurrences133–131 Mya — about 0.1 occurrences131–130 Mya — about 0.1 occurrences130–129 Mya — about 0.1 occurrences129–128 Mya — about 0.1 occurrences128–126 Mya — about 0.1 occurrences126–125 Mya — about 0.1 occurrences125–124 Mya — about 0.1 occurrences124–123 Mya — about 0.1 occurrences123–121 Mya — about 2 occurrences121–120 Mya — about 21 occurrences120–119 Mya — about 18 occurrences119–118 Mya — about 16 occurrences118–116 Mya — about 16 occurrences116–115 Mya — about 16 occurrences115–114 Mya — about 16 occurrences114–112 Mya — about 7 occurrences112–111 Mya — about 0.4 occurrences111–110 Mya — about 0.4 occurrences110–109 Mya — about 0.3 occurrences109–107 Mya — about 0.3 occurrences107–106 Mya — about 0.4 occurrences106–105 Mya — about 0.7 occurrences105–104 Mya — about 0.7 occurrences104–102 Mya — about 0.7 occurrences102–101 Mya — about 0.7 occurrences101–100 Mya — about 0.3 occurrences121.4 Mya106.3 Mya137.8 Mya99.8 Mya

116 occurrences of Tropaeum 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

116 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

18 formations

Hythe — 51.08°N, 1.18°EHythe — 51.08°N, 1.08°EHythe — 51.15°N, 0.88°EHythe — 51.28°N, 0.53°EHythe — 51.25°N, 0.07°WHythe — 51.23°N, 0.07°WWallumbilla — 16.52°S, 143.70°EWallumbilla — 20.85°S, 144.20°EWallumbilla — 25.00°S, 153.00°EWallumbilla — 16.08°S, 142.72°EWallumbilla — 17.60°S, 140.60°EWallumbilla — 27.83°S, 148.62°EWallumbilla — 20.75°S, 143.52°EWallumbilla — 26.58°S, 148.78°EFerruginous Sands — 50.60°N, 1.32°WFerruginous Sands — 50.63°N, 1.17°WFerruginous Sands — 50.60°N, 1.35°WRio Mayer — 49.00°S, 72.00°WRio Mayer — 48.92°S, 72.08°WRio Mayer — 48.92°S, 71.92°WMakatini — 27.17°S, 32.17°EMakatini — 27.53°S, 32.17°ESandgate — 51.23°N, 0.22°WSandgate — 51.23°N, 0.58°WSandgate — 50.98°N, 0.75°WSandgate — 51.22°N, 0.12°WFossil Bluff — 79.82°S, 55.00°WFossil Bluff — 72.15°S, 69.08°WBudden Canyon — 40.43°N, 122.65°WBudden Canyon — 40.42°N, 122.65°WBudden Canyon — 40.45°N, 122.62°WTadhart — 31.21°N, 7.88°WBhuj — 23.63°N, 68.95°EBhuj — 23.80°N, 68.90°ERurikfjellet — 78.10°N, 13.95°ELes Graous — 43.84°N, 7.08°EWoburn Sand — 52.13°N, 0.30°WPluto Glacier — 71.75°S, 68.50°WMaputo — 26.83°S, 32.22°EAnnenkov Island — 54.49°S, 37.03°WSanganeh — 37.72°N, 56.32°ESarcheshmah — 37.72°N, 56.12°E

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The named rock units Tropaeum has been recovered from, largest first. Drawn where the rock is now, not where it formed. 26 occurrences have no formation on record, which is common for older literature.

Tropaeum and its relatives

Early Cretaceous

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

Found in the same rock

270 taxa

The Paleobiology Database records 81 sites for Tropaeum, 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

27 references

Each of the 116 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. 15 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 content2

Picture of Tropaeum

Credit
Apokryltaros at English Wikipedia
Licence
CC BY 3.0
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC Attribution
Commercial use
cannot be read from the licence given — check the record

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 itAncyloceratinae through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Sowerby 1837