Eoderoceratidae

Eoderoceratidae is the ancestral and most primitive family of the Eoderoceratoidea; lower Jurassic ammonite cephalopods, characterized by evolute, commonly serpenticonic, shells that had long body chambers and would have had no stable floating position; and thus resemble contemporary Psiloceratoidea. Spines, or tubercles, are typically found in two rows on the inner and outer parts of the whorl sides, joined by radial ribs. These are often more developed on the inner and middle whorls, becoming less so or absent on the outer. Sutures are highly complex.

Eoderoceratidae

Daderot · CC0 · 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 168.2 Mya.

Late Triassic — about 0 of 1003 occurrencesEarly Jurassic — about 1003 of 1003 occurrencesEarly JurassicMiddle Jurassic — about 0 of 1003 occurrencesMiddle Jurassic202–201 Mya — about 0.8 occurrences201–200 Mya — about 2 occurrences200–199 Mya — about 26 occurrences199–197 Mya — about 33 occurrences197–196 Mya — about 33 occurrences196–195 Mya — about 33 occurrences195–194 Mya — about 33 occurrences194–193 Mya — about 35 occurrences193–192 Mya — about 93 occurrences192–191 Mya — about 93 occurrences191–189 Mya — about 93 occurrences189–188 Mya — about 102 occurrences188–187 Mya — about 104 occurrences187–186 Mya — about 109 occurrences186–185 Mya — about 125 occurrences185–184 Mya — about 71 occurrences184–182 Mya — about 6 occurrences182–181 Mya — about 2 occurrences181–180 Mya — about 2 occurrences180–179 Mya — about 2 occurrences179–178 Mya — about 2 occurrences178–177 Mya — about 2 occurrences177–176 Mya — about 2 occurrences176–174 Mya — about 2 occurrences174–173 Mya — about 0.0 occurrences173–172 Mya — about 0.0 occurrences172–171 Mya — about 0.0 occurrences171–170 Mya — about 0.0 occurrences170–169 Mya — about 0.0 occurrences169–168 Mya — about 0.0 occurrences192.9 Mya184.2 Mya202.1 Mya167.5 Mya

1,003 occurrences of Eoderoceratidae 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

1,003 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

40 formations

Fannin — 52.76°N, 131.55°WFannin — 53.03°N, 131.88°WFannin — 53.18°N, 132.02°WFannin — 53.38°N, 132.27°WFannin — 53.41°N, 132.25°WFannin — 53.20°N, 132.05°WSpatsizi — 57.47°N, 128.94°WSpatsizi — 57.54°N, 129.01°WInklin — 59.34°N, 133.73°WInklin — 59.32°N, 133.77°WInklin — 59.25°N, 133.85°WInklin — 59.20°N, 133.90°WInklin — 59.29°N, 134.00°WInklin — 59.29°N, 133.95°WInklin — 59.35°N, 133.83°WInklin — 59.38°N, 133.92°WInklin — 59.42°N, 134.00°WSunrise — 38.49°N, 118.08°WSunrise — 39.33°N, 118.07°WSierra de Santa Rosa — 30.06°N, 111.65°WSierra de Santa Rosa — 29.70°N, 112.27°WCold Fish Volcanics — 57.50°N, 128.90°WCold Fish Volcanics — 57.67°N, 128.86°WCold Fish Volcanics — 57.68°N, 129.04°WCold Fish Volcanics — 57.67°N, 128.84°WCold Fish Volcanics — 57.72°N, 129.18°WIsztimér Limestone — 47.20°N, 17.90°EIsztimér Limestone — 46.98°N, 17.30°EGhost Creek — 52.76°N, 131.55°WGhost Creek — 53.03°N, 131.88°WGhost Creek — 53.18°N, 132.02°WGhost Creek — 53.41°N, 132.30°WGhost Creek — 53.20°N, 132.05°WLower Lias — 51.80°N, 1.88°WMaude — 53.20°N, 132.05°WMaude — 53.17°N, 132.03°WMaude — 53.40°N, 132.30°WMaude — 53.32°N, 132.48°WTalkeetna — 61.87°N, 147.70°WTalkeetna — 61.84°N, 147.43°WOust — 36.52°N, 10.06°EOust — 36.37°N, 10.09°EOust — 36.35°N, 10.07°EOust — 36.24°N, 9.99°EOust — 36.17°N, 9.92°EÁgua de Madeiros — 39.74°N, 9.04°WAllgäu — 47.18°N, 9.98°EAllgäu — 47.15°N, 10.10°EPuchenque — 35.10°S, 70.12°WPuchenque — 35.48°S, 69.92°WTűzkövesárok Limestone — 47.28°N, 18.08°ESierra Chacai Co — 39.28°S, 70.38°WHuayacocotla — 20.33°N, 98.22°WCalcaires à Gryphées — 47.06°N, 4.74°ECharmouth Mudstone — 50.73°N, 2.89°WBelemnite Marls — 50.73°N, 2.87°WEl Cholo — 34.95°S, 69.72°WPiedra Pintada — 40.15°S, 70.30°WBonanza — 48.75°N, 124.18°W

Loading coastlines…

The named rock units Eoderoceratidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 16 further formations hold fewer occurrences each and are not listed. 402 occurrences have no formation on record, which is common for older literature.

Eoderoceratidae and its relatives

Early Jurassic

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

Found in the same rock

329 taxa

The Paleobiology Database records 504 sites for Eoderoceratidae, and this reads 240 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

64 references

Each of the 1,003 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. 52 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 Eoderoceratidae

Credit
Daderot
Licence
CC0
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 itEoderoceratoidea through timeFormations of the Early JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Spath 1929