Heligmus

Heligmus

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
MalleidaePBDB
Diet
suspension feederPBDB, for Pterioidea
Life habit
epifaunalPBDB, for Pterioidea
Motility
stationary, attached, epibiontPBDB, for Pterioidea
Vision
blindPBDB, for Bivalvia
Environment
marine,brackishPBDB, for Ostreida

Time the record covers

At least 6.7 million years on record.

The record covers at least 168.2 Mya to 161.5 Mya. No occurrence read is dated outside 170.9 Mya to 154.8 Mya.

Middle Jurassic — about 13 of 14 occurrencesMiddle JurassicLate Jurassic — about 1 of 14 occurrencesLate Jurassic171–171 Mya — about 0.1 occurrences171–170 Mya — about 0.8 occurrences170–170 Mya — about 0.8 occurrences170–169 Mya — about 0.8 occurrences169–169 Mya — about 0.9 occurrences169–168 Mya — about 2 occurrences168–167 Mya — about 2 occurrences167–167 Mya — about 2 occurrences167–166 Mya — about 2 occurrences166–166 Mya — about 2 occurrences166–165 Mya — about 1 occurrence162–161 Mya — about 0.1 occurrences161–161 Mya — about 0.1 occurrences161–160 Mya — about 0.1 occurrences160–159 Mya — about 0.1 occurrences159–159 Mya — about 0.1 occurrences159–158 Mya — about 0.1 occurrences158–158 Mya — about 0.1 occurrences158–157 Mya — about 0.1 occurrences157–157 Mya — about 0.1 occurrences157–156 Mya — about 0.1 occurrences156–155 Mya — about 0.1 occurrences155–155 Mya — about 0.1 occurrences155–154 Mya — about 0.0 occurrences168.2 Mya161.5 Mya171.4 Mya154.3 Mya

14 occurrences of Heligmus on record, most of them in the Middle 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

14 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

Bihin Limestone — 10.17°N, 45.13°EBihin Limestone — 10.18°N, 45.01°EBihin Limestone — 10.44°N, 43.17°EBihin Limestone — 10.29°N, 43.74°EDaua Limestone — 3.90°N, 41.20°E

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The named rock units Heligmus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 6 occurrences have no formation on record, which is common for older literature.

Heligmus and its relatives

Middle Jurassic

Where Heligmus and its relatives were recorded in the Middle Jurassic.

Found in the same rock

46 taxa

The Paleobiology Database records 11 sites for Heligmus, 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

3 references

Each of the 14 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 Heligmus

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

No 3D scan of Heligmus was found in Sketchfab.

Smithsonian Open Access and MorphoSource were 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 itMalleidae through timeFormations of the Middle JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Deslongchamps 1856