Quadrinervus

Quadrinervus

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
HarpagodinaePBDB
Diet
detritivorePBDB, for Aporrhaidae
Life habit
semi-infaunalPBDB, for Aporrhaidae
Motility
slow-movingPBDB, for Aporrhaidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 79 million years on record.

The record covers at least 165.3 Mya to 85.7 Mya. No occurrence read is dated outside 201.4 Mya to 83.6 Mya.

Late Triassic — about 0 of 44 occurrencesEarly Jurassic — about 1 of 44 occurrencesEarly JurassicMiddle Jurassic — about 29 of 44 occurrencesMiddle JurassicLate Jurassic — about 13 of 44 occurrencesLate JurassicEarly Cretaceous — about 0 of 44 occurrencesLate Cretaceous — about 1 of 44 occurrencesLate Cretaceous204–200 Mya — about 0.1 occurrences200–196 Mya — about 0.1 occurrences196–192 Mya — about 0.1 occurrences192–187 Mya — about 0.1 occurrences187–183 Mya — about 0.1 occurrences183–179 Mya — about 0.1 occurrences179–175 Mya — about 0.1 occurrences175–171 Mya — about 0.1 occurrences171–167 Mya — about 1.0 occurrences167–163 Mya — about 18 occurrences163–159 Mya — about 13 occurrences159–155 Mya — about 5 occurrences155–151 Mya — about 3 occurrences151–147 Mya — about 2 occurrences147–143 Mya — about 0.9 occurrences89–85 Mya — about 0.2 occurrences85–81 Mya — about 0.8 occurrences165.3 Mya85.7 Mya204 Mya81 Mya

44 occurrences of Quadrinervus 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

44 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

8 formations

Tataouine — 33.00°N, 10.47°ETataouine — 32.57°N, 10.35°ETataouine — 32.92°N, 10.45°EChari — 23.50°N, 70.50°EZohar — 30.93°N, 34.98°EAlcobaca — 38.42°N, 9.22°WKimmeridge-clay — 51.32°N, 2.23°WPatcham — 23.52°N, 69.00°EGoradongar — 23.50°N, 70.50°EWashtawa — 23.50°N, 70.50°E

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The named rock units Quadrinervus 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.

Quadrinervus and its relatives

Middle Jurassic

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

Found in the same rock

186 taxa

The Paleobiology Database records 15 sites for Quadrinervus, 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

7 references

Each of the 44 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. 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 Quadrinervus

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

No 3D scan of Quadrinervus 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 itHarpagodinae through timeFormations of the Middle JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Cossmann 1904