Radstockiceras

Radstockiceras is an extinct genus of lower Jurassic ammonite that lived from Oxynotum zone of upper Sinemurian to Raricostatum zone of lower Pliensbachian. Shells of these animals were oxycone and involute with umbilicus that took maximum of 12% of diameter in the case of outer whorls. On inner whorls, venter has been sharp, but then it became rounded. Faint ribs had falcoid shape, but sometimes, ribs could absent. Shells could have been large in their size. Suture has been very complex, similar to Oxynoticeras, but culmination at umbilical margin has been missing. Genus has been named after town of Radstock, in Somerset.

Radstockiceras

Fossiles.de.France · 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
OxynoticeratidaePBDB
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 most 17 million years on record.

Every occurrence read is dated to somewhere between 199.5 Mya and 182.9 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Early Jurassic — about 73 of 73 occurrencesEarly Jurassic200–199 Mya — about 0.1 occurrences199–199 Mya — about 0.9 occurrences199–198 Mya — about 0.9 occurrences198–198 Mya — about 0.9 occurrences198–197 Mya — about 0.9 occurrences197–196 Mya — about 0.9 occurrences196–196 Mya — about 0.9 occurrences196–195 Mya — about 0.9 occurrences195–195 Mya — about 0.9 occurrences195–194 Mya — about 0.9 occurrences194–194 Mya — about 0.9 occurrences194–193 Mya — about 0.9 occurrences193–192 Mya — about 4 occurrences192–192 Mya — about 4 occurrences192–191 Mya — about 4 occurrences191–191 Mya — about 4 occurrences191–190 Mya — about 4 occurrences190–189 Mya — about 4 occurrences189–189 Mya — about 4 occurrences189–188 Mya — about 4 occurrences188–188 Mya — about 4 occurrences188–187 Mya — about 4 occurrences187–187 Mya — about 4 occurrences187–186 Mya — about 4 occurrences186–185 Mya — about 4 occurrences185–185 Mya — about 4 occurrences185–184 Mya — about 4 occurrences184–184 Mya — about 0.1 occurrences184–183 Mya — about 0.1 occurrences183–182 Mya — about 0.0 occurrences200 Mya182.4 Mya

73 occurrences of Radstockiceras 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

73 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

11 formations

Tűzkövesárok Limestone — 47.28°N, 18.08°ERio Palomar — 41.29°N, 0.79°WSomssichhegy — 45.87°N, 18.45°EOust — 36.37°N, 10.09°EOust — 36.35°N, 10.07°EOust — 36.24°N, 9.99°EIsztimér Limestone — 47.19°N, 17.87°EBelemnite Marls — 50.73°N, 2.87°WAlmonacid de la Cuba — 41.29°N, 0.79°WLautaro — 28.13°S, 69.96°WLautaro — 28.20°S, 69.94°WPiedra Pintada — 40.05°S, 70.35°WHasle — 55.10°N, 14.73°EMontandón — 25.89°S, 69.18°W

Loading coastlines…

The named rock units Radstockiceras has been recovered from, largest first. Drawn where the rock is now, not where it formed. 38 occurrences have no formation on record, which is common for older literature.

Radstockiceras and its relatives

Early Jurassic

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

Found in the same rock

304 taxa

The Paleobiology Database records 61 sites for Radstockiceras, 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

20 references

Each of the 73 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. 8 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 Radstockiceras

Credit
Fossiles.de.France
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 itOxynoticeratidae through timeFormations of the Early JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Buckman 1918