Hemiaulus polymorphus

Hemiaulus polymorphus

via GBIF · CC BY 4.0 · via GBIF. 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
HemiaulusPBDB

Time the record covers

At least 58 million years on record.

The record covers at least 72.2 Mya to 13.82 Mya. No occurrence read is dated outside 83.6 Mya to 2.58 Mya.

Late Cretaceous — about 50 of 58 occurrencesLate CretaceousPaleocene — about 4 of 58 occurrencesPaleoceneEocene — about 1 of 58 occurrencesEoceneOligocene — about 0 of 58 occurrencesMiocene — about 3 of 58 occurrencesMiocenePliocene — about 0 of 58 occurrencesPleistocene — about 0 of 58 occurrences85–82 Mya — about 5 occurrences82–80 Mya — about 11 occurrences80–77 Mya — about 11 occurrences77–74 Mya — about 11 occurrences74–71 Mya — about 8 occurrences71–68 Mya — about 2 occurrences68–66 Mya — about 2 occurrences66–63 Mya — about 1 occurrence63–60 Mya — about 1 occurrence60–57 Mya — about 1 occurrence57–54 Mya — about 0.5 occurrences49–46 Mya — about 0.3 occurrences46–43 Mya — about 0.4 occurrences43–40 Mya — about 0.3 occurrences23–21 Mya — about 0.4 occurrences21–18 Mya — about 0.4 occurrences18–15 Mya — about 0.4 occurrences15–12 Mya — about 1 occurrence12–9.4 Mya — about 0.4 occurrences9.4–6.6 Mya — about 0.1 occurrences6.6–3.8 Mya — about 0.1 occurrences3.8–960 ka Mya — about 0.1 occurrences72.2 Mya13.82 Mya85 Mya960 ka

58 occurrences of Hemiaulus polymorphus on record, most of them in the Late 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

58 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

Mason River — 69.46°N, 126.97°WKanguk — 79.00°N, 85.37°WKanguk — 78.00°N, 103.00°WLopez de Bertodano — 64.25°S, 56.75°WSmoking Hills — 69.46°N, 126.97°WSobral — 64.25°S, 56.75°WPungo River — 35.40°N, 76.80°WChoptank — 38.44°N, 76.44°WKylan — 59.92°N, 164.78°E

Loading coastlines…

The named rock units Hemiaulus polymorphus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Hemiaulus polymorphus and its relatives

Late Cretaceous

Where Hemiaulus polymorphus and its relatives were recorded in the Late Cretaceous.

Found in the same rock

368 taxa

The Paleobiology Database records 53 sites for Hemiaulus polymorphus, 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

6 references

Each of the 58 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 Hemiaulus polymorphus

Source
GBIF
Credit
via GBIF
Licence
CC BY 4.0
Commercial use
the licence allows it

No 3D scan of Hemiaulus polymorphus 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 itHemiaulus through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Grunow 1884