Vermiceras

Vermiceras is an ammonite that belongs to the order Ammonitida. Its shell is evolute and is covered in nonbranching ribs. Its whorls do not increase in size very fast, but there are many revolutions on its shell, which is fairly narrow. It has a sharp ventral keel and a diameter of about 5.2 centimeters. It lived in the Early Jurassic.

Vermiceras

Geni · 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
ArietitinaePBDB
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 45 million years on record.

Every occurrence read is dated to somewhere between 205.7 Mya and 161.5 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Late Triassic — about 0 of 187 occurrencesLate TriassicEarly Jurassic — about 186 of 187 occurrencesEarly JurassicMiddle Jurassic — about 0 of 187 occurrencesMiddle JurassicLate Jurassic — about 0 of 187 occurrences207–205 Mya — about 0.1 occurrences205–204 Mya — about 0.1 occurrences204–202 Mya — about 0.1 occurrences202–200 Mya — about 56 occurrences200–199 Mya — about 62 occurrences199–197 Mya — about 17 occurrences197–196 Mya — about 17 occurrences196–194 Mya — about 17 occurrences194–193 Mya — about 16 occurrences193–191 Mya — about 0.2 occurrences191–190 Mya — about 0.2 occurrences190–188 Mya — about 0.2 occurrences188–187 Mya — about 0.2 occurrences187–185 Mya — about 0.2 occurrences185–184 Mya — about 0.2 occurrences184–182 Mya — about 0.2 occurrences182–181 Mya — about 0.2 occurrences181–179 Mya — about 0.2 occurrences179–177 Mya — about 0.2 occurrences177–176 Mya — about 0.2 occurrences176–174 Mya — about 0.2 occurrences174–173 Mya — about 0.0 occurrences173–171 Mya — about 0.0 occurrences171–170 Mya — about 0.0 occurrences170–168 Mya — about 0.0 occurrences168–167 Mya — about 0.0 occurrences167–165 Mya — about 0.0 occurrences165–164 Mya — about 0.0 occurrences164–162 Mya — about 0.0 occurrences162–161 Mya — about 0.0 occurrences206.6 Mya160.6 Mya

187 occurrences of Vermiceras 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

187 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

Last Creek — 51.09°N, 122.96°WLast Creek — 51.05°N, 122.97°WGraylock — 44.11°N, 119.43°WSandilands — 53.93°N, 133.15°WSunrise — 38.81°N, 117.60°WSunrise — 38.49°N, 118.09°WAntimonio — 30.63°N, 112.57°WSchnöll — 47.70°N, 13.17°ELower Lias — 51.80°N, 1.88°WTalkeetna — 57.73°N, 155.40°WHuayacocotla — 20.33°N, 98.22°WSchnoll — 47.00°N, 13.00°EIsztimér — 47.18°N, 17.83°EJinji — 22.80°N, 112.65°EOust — 36.52°N, 10.06°EInklin — 59.33°N, 133.75°WSierra de Santa Rosa — 30.63°N, 112.57°WKendlbach — 47.48°N, 11.53°EFernie — 56.10°N, 123.04°WChilingote — 6.66°S, 77.80°WAdnet — 46.01°N, 25.47°ELias — 51.40°N, 2.46°W

Loading coastlines…

The named rock units Vermiceras has been recovered from, largest first. Drawn where the rock is now, not where it formed. 63 occurrences have no formation on record, which is common for older literature.

Vermiceras and its relatives

Early Jurassic

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

Found in the same rock

305 taxa

The Paleobiology Database records 92 sites for Vermiceras, 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

41 references

Each of the 187 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. 29 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 Vermiceras

Credit
Geni
Licence
CC BY-SA 4.0
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 itArietitinae through timeFormations of the Early JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.