Discohelix

Discohelix is a genus of extinct sea snails, marine gastropod mollusks in the family Discohelicidae.

Discohelix

Wilson44691 · 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
DiscohelicidaePBDB
Diet
grazerPBDB, for Vetigastropoda
Life habit
epifaunalPBDB, for Vetigastropoda
Motility
actively mobilePBDB, for Vetigastropoda
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 238 million years on record.

The record covers at least 241.464 Mya to 2.58 Mya. No occurrence read is dated outside 247 Mya to 774 ka.

Early Triassic — about 0 of 184 occurrencesMiddle Triassic — about 9 of 184 occurrencesLate Triassic — about 1 of 184 occurrencesLate TriassicEarly Jurassic — about 104 of 184 occurrencesEarly JurassicMiddle Jurassic — about 41 of 184 occurrencesLate Jurassic — about 9 of 184 occurrencesEarly Cretaceous — about 8 of 184 occurrencesEarly CretaceousLate Cretaceous — about 3 of 184 occurrencesLate CretaceousPaleocene — about 6 of 184 occurrencesEocene — about 2 of 184 occurrencesEoceneOligocene — about 0 of 184 occurrencesMiocene — about 0 of 184 occurrencesPliocene — about 0 of 184 occurrencesPleistocene — about 1 of 184 occurrences252–244 Mya — about 3 occurrences244–235 Mya — about 6 occurrences210–202 Mya — about 1.0 occurrences202–193 Mya — about 16 occurrences193–185 Mya — about 67 occurrences185–176 Mya — about 19 occurrences176–168 Mya — about 22 occurrences168–160 Mya — about 25 occurrences160–151 Mya — about 6 occurrences126–118 Mya — about 1 occurrence118–109 Mya — about 4 occurrences109–101 Mya — about 3 occurrences101–92 Mya — about 2 occurrences84–76 Mya — about 0.7 occurrences76–67 Mya — about 0.3 occurrences67–59 Mya — about 4 occurrences59–50 Mya — about 2 occurrences50–42 Mya — about 2 occurrences42–34 Mya — about 0.3 occurrences8.4–0 Mya — about 1 occurrence241.464 Mya2.58 Mya252 Mya0 Mya

184 occurrences of Discohelix 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

184 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

28 formations

Hierlatz — 47.19°N, 17.87°EIsztimér Limestone — 47.18°N, 17.88°EIsztimér Limestone — 46.98°N, 17.30°EIsztimér — 47.20°N, 17.89°EIsztimér — 47.28°N, 17.84°EQingyan — 26.33°N, 106.68°EHanifa — 23.90°N, 46.28°EHanifa — 23.08°N, 46.53°EHanifa — 22.40°N, 46.95°EHanifa — 24.52°N, 45.95°EHierlatz Limestone — 47.25°N, 17.77°EHierlatz Limestone — 47.20°N, 17.87°EDhruma — 25.50°N, 45.00°EDhruma — 23.97°N, 46.17°EDhruma — 24.75°N, 46.00°EDhruma — 25.05°N, 45.67°EDhruma — 26.92°N, 44.00°EDhruma — 26.33°N, 44.83°ETuwaiq Mt.Lst. — 23.90°N, 46.53°ETuwaiq Mt.Lst. — 22.43°N, 46.42°ETuwaiq Mt.Lst. — 24.75°N, 46.08°ETuwaiq Mt.Lst. — 25.37°N, 45.50°ETuwaiq Mt.Lst. — 25.78°N, 45.25°EMartinez — 38.05°N, 122.15°WMarrat — 24.25°N, 46.08°EGarschella — 47.42°N, 9.90°EShuqra — 14.32°N, 48.45°ETataouine — 33.00°N, 10.47°ETataouine — 32.57°N, 10.35°ETűzkövesárok Limestone — 47.28°N, 18.08°ETolo Channel — 22.45°N, 114.28°ETuwaiq Mountain Limestone — 25.75°N, 45.17°ECaloosahatchee — 26.89°N, 82.01°WLellinge Greensand — 55.48°N, 10.47°EChari — 23.50°N, 70.50°ESan Viligio Oolite — 46.13°N, 12.36°EBelemnite Marls — 50.72°N, 2.85°WHepingxiang — 26.06°N, 99.44°EPanoche — 35.88°N, 120.10°WCalcari e Marne a Posidonia — 42.80°N, 12.57°E

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The named rock units Discohelix has been recovered from, largest first. Drawn where the rock is now, not where it formed. 4 further formations hold fewer occurrences each and are not listed. 75 occurrences have no formation on record, which is common for older literature.

Discohelix and its relatives

Early Jurassic

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

Found in the same rock

1,496 taxa

The Paleobiology Database records 139 sites for Discohelix, 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

40 references

Each of the 184 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. 28 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 Discohelix

Credit
Wilson44691
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Discohelix 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 itDiscohelicidae through timeFormations of the Early JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Dunker 1847)