Helicacanthus

Helicacanthus

via iDigBio · CC BY-NC-ND · via iDigBio. 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
NododelphinulidaePBDB
Diet
grazerPBDB, for Trochoidea
Life habit
epifaunalPBDB, for Trochoidea
Motility
actively mobilePBDB, for Trochoidea
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 43 million years on record.

The record covers at least 165.3 Mya to 121.4 Mya. No occurrence read is dated outside 170.9 Mya to 113.2 Mya.

Middle Jurassic — about 1 of 4 occurrencesMiddle JurassicLate Jurassic — about 0 of 4 occurrencesEarly Cretaceous — about 3 of 4 occurrencesEarly Cretaceous172–170 Mya — about 0.2 occurrences170–168 Mya — about 0.4 occurrences168–166 Mya — about 0.4 occurrences166–164 Mya — about 0.1 occurrences126–124 Mya — about 0.8 occurrences124–122 Mya — about 0.9 occurrences122–120 Mya — about 0.5 occurrences120–118 Mya — about 0.2 occurrences118–116 Mya — about 0.2 occurrences116–114 Mya — about 0.2 occurrences114–112 Mya — about 0.1 occurrences165.3 Mya121.4 Mya172 Mya112 Mya

4 occurrences of Helicacanthus on record, most of them in the Early Cretaceous. 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

4 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

2 formations

Garschella — 47.42°N, 9.90°EHepingxiang — 26.06°N, 99.44°E

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The named rock units Helicacanthus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.

Helicacanthus and its relatives

Early Cretaceous

Where Helicacanthus and its relatives were recorded in the Early Cretaceous.

Found in the same rock

21 taxa

The Paleobiology Database records 4 sites for Helicacanthus, and this reads all of them. The number is how many of those sites it was catalogued from too.

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

3 references

Each of the 4 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. Each entry links to the Paleobiology Database's own record for the work.

Media and terms

Media content1

Picture of Helicacanthus

Source
iDigBio
Credit
via iDigBio
Licence
CC BY-NC-ND
Commercial use
the licence does not allow it

No 3D scan of Helicacanthus 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.

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itNododelphinulidae through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.