Coeloceratidae

Coeloceratidae is a family of ammonites belonging to the Eoderoceratoidea that lived during the Early Jurassic. Shells are evolute, tending to be broadly discoidal with depressed whorls bearing primary and secondary ribs that branch from outer lateral tubercles. Most of the included species have coronate inner whorls and outer tubercles only. In general, Coeloceratids resemble the Middle Jurassic Stephanoceras. Once regarded as the subfamily Coeloceratinae in the Eoderoceratidae, these ammonites are now given familial rank.

Coeloceratidae

Jonathan Chen · 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
EoderoceratoideaPBDB
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 8.7 million years on record.

The record covers at least 192.9 Mya to 184.2 Mya. No occurrence read is dated outside 201.4 Mya to 161.5 Mya.

Late Triassic — about 0 of 215 occurrencesEarly Jurassic — about 215 of 215 occurrencesEarly JurassicMiddle Jurassic — about 0 of 215 occurrencesMiddle JurassicLate Jurassic — about 0 of 215 occurrences202–201 Mya — about 0.1 occurrences201–199 Mya — about 0.3 occurrences199–198 Mya — about 3 occurrences198–197 Mya — about 3 occurrences197–195 Mya — about 3 occurrences195–194 Mya — about 3 occurrences194–193 Mya — about 10 occurrences193–191 Mya — about 28 occurrences191–190 Mya — about 28 occurrences190–188 Mya — about 33 occurrences188–187 Mya — about 36 occurrences187–186 Mya — about 33 occurrences186–184 Mya — about 28 occurrences184–183 Mya — about 2 occurrences183–181 Mya — about 0.6 occurrences181–180 Mya — about 0.6 occurrences180–179 Mya — about 0.6 occurrences179–177 Mya — about 0.6 occurrences177–176 Mya — about 0.6 occurrences176–175 Mya — about 0.5 occurrences175–173 Mya — about 0.0 occurrences173–172 Mya — about 0.0 occurrences172–170 Mya — about 0.0 occurrences170–169 Mya — about 0.0 occurrences169–168 Mya — about 0.0 occurrences168–166 Mya — about 0.0 occurrences166–165 Mya — about 0.0 occurrences165–163 Mya — about 0.0 occurrences163–162 Mya — about 0.0 occurrences162–161 Mya — about 0.0 occurrences192.9 Mya184.2 Mya202.2 Mya160.7 Mya

215 occurrences of Coeloceratidae 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

215 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

20 formations

Ghost Creek — 53.03°N, 131.88°WGhost Creek — 53.41°N, 132.30°WGhost Creek — 53.20°N, 132.05°WBelemnite Marls — 50.73°N, 2.87°WOust — 36.52°N, 10.06°EOust — 36.37°N, 10.09°EOust — 36.35°N, 10.07°ETűzkövesárok Limestone — 47.34°N, 18.09°EÁgua de Madeiros — 39.74°N, 9.04°WIsztimér Limestone — 47.20°N, 17.90°EIsztimér Limestone — 46.98°N, 17.30°EInklin — 59.34°N, 133.73°WInklin — 59.16°N, 133.81°WInklin — 59.42°N, 134.00°WAdnet — 47.46°N, 13.56°EAgardhfjellet — 78.17°N, 18.87°EAgardhfjellet — 78.29°N, 18.84°EAgardhfjellet — 78.05°N, 18.64°ESomssichhegy — 45.87°N, 18.45°ELower Lias — 51.80°N, 1.88°WSierra de Santa Rosa — 29.70°N, 112.27°WHasle — 55.10°N, 14.73°EPuchenque — 35.10°S, 70.10°WNishinakayama — 34.25°N, 131.00°ETakwahoni — 58.17°N, 128.97°WMaude — 53.40°N, 132.30°WCold Fish Volcanics — 57.73°N, 129.16°WLautaro — 28.13°S, 69.96°WSierra Fraga — 26.91°S, 69.57°W

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The named rock units Coeloceratidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 115 occurrences have no formation on record, which is common for older literature.

Coeloceratidae and its relatives

Early Jurassic

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

Found in the same rock

438 taxa

The Paleobiology Database records 132 sites for Coeloceratidae, 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

36 references

Each of the 215 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. 24 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 Coeloceratidae

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

No 3D scan of Coeloceratidae 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 itEoderoceratoidea through timeFormations of the Early JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Haug 1910