Aegoceras

Aegoceras is an evolutionary wound ammonite, with wide spaced ribs, from the Early Jurassic (England) included in the Liparoceratidae and superfamily Eoderoceratidae. Leparoceras is a related genus.

Aegoceras

James St. John · CC BY 2.0 · 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
LiparoceratidaePBDB
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 6.7 million years on record.

The record covers at least 192.9 Mya to 186.2 Mya. No occurrence read is dated outside 201.4 Mya to 174.7 Mya.

Late Triassic — about 0 of 198 occurrencesEarly Jurassic — about 198 of 198 occurrencesEarly JurassicMiddle Jurassic — about 0 of 198 occurrences202–201 Mya — about 0.0 occurrences201–200 Mya — about 0.1 occurrences200–199 Mya — about 0.3 occurrences199–198 Mya — about 0.7 occurrences198–197 Mya — about 0.7 occurrences197–196 Mya — about 0.7 occurrences196–195 Mya — about 0.7 occurrences195–195 Mya — about 0.7 occurrences195–194 Mya — about 0.7 occurrences194–193 Mya — about 5 occurrences193–192 Mya — about 20 occurrences192–191 Mya — about 20 occurrences191–190 Mya — about 20 occurrences190–189 Mya — about 20 occurrences189–188 Mya — about 20 occurrences188–187 Mya — about 20 occurrences187–186 Mya — about 20 occurrences186–185 Mya — about 22 occurrences185–184 Mya — about 21 occurrences184–183 Mya — about 3 occurrences183–182 Mya — about 0.1 occurrences182–182 Mya — about 0.1 occurrences182–181 Mya — about 0.1 occurrences181–180 Mya — about 0.1 occurrences180–179 Mya — about 0.1 occurrences179–178 Mya — about 0.1 occurrences178–177 Mya — about 0.1 occurrences177–176 Mya — about 0.1 occurrences176–175 Mya — about 0.1 occurrences175–174 Mya — about 0.0 occurrences192.9 Mya186.2 Mya201.9 Mya174.2 Mya

198 occurrences of Aegoceras on record, most of them in the Early 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

198 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

9 formations

Almonacid de la Cuba — 41.29°N, 0.79°WInklin — 59.34°N, 133.74°WInklin — 59.22°N, 133.84°WInklin — 59.42°N, 134.00°WLower Lias — 51.80°N, 1.88°WScalpa Sandstone — 57.38°N, 6.07°WScalpa Sandstone — 57.38°N, 6.00°WCharmouth Mudstone — 50.72°N, 2.85°WAllgäu — 47.15°N, 10.10°EAllgäu — 47.10°N, 9.78°EFannin — 53.38°N, 132.27°WFannin — 53.20°N, 132.05°WAdnet — 48.89°N, 19.08°EStaithes Sandstone — 54.26°N, 1.28°W

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The named rock units Aegoceras has been recovered from, largest first. Drawn where the rock is now, not where it formed. 164 occurrences have no formation on record, which is common for older literature.

Aegoceras and its relatives

Early Jurassic

Where Aegoceras and its relatives were recorded in the Early Jurassic.

Found in the same rock

289 taxa

The Paleobiology Database records 150 sites for Aegoceras, 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

26 references

Each of the 198 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. 14 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 Aegoceras

Credit
James St. John
Licence
CC BY 2.0
Commercial use
the licence allows it

No 3D scan of Aegoceras 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 itLiparoceratidae through timeFormations of the Early JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Waagen 1869