Euclastes

Euclastes is an extinct genus of sea turtles that survived the Cretaceous–Paleogene mass extinction. The genus was first named by Edward Drinker Cope in 1867, and contains three species. E. hutchisoni, was named in 2003 but has since been reassigned to the genus Pacifichelys, while E. coahuilaensis named in 2009 was reassigned as Mexichelys coahuilaensis in 2010.

Euclastes

Macrophyseter · CC BY-SA 4.0 · 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
EuclastidaePBDB
Diet
omnivorePBDB, for Cryptodira
Life habit
aquaticPBDB, for Cryptodira
Motility
actively mobilePBDB, for Osteichthyes
Environment
marinePBDB, for Chelonioidea

Time the record covers

At least 51 million years on record.

The record covers at least 72.2 Mya to 20.45 Mya. No occurrence read is dated outside 83.6 Mya to 5.333 Mya.

Late Cretaceous — about 17 of 39 occurrencesLate CretaceousPaleocene — about 17 of 39 occurrencesPaleoceneEocene — about 3 of 39 occurrencesEoceneOligocene — about 1 of 39 occurrencesOligoceneMiocene — about 1 of 39 occurrencesMiocenePliocene — about 0 of 39 occurrences85–82 Mya — about 0.5 occurrences82–80 Mya — about 1 occurrence80–77 Mya — about 1 occurrence77–74 Mya — about 1 occurrence74–72 Mya — about 2 occurrences72–69 Mya — about 5 occurrences69–66 Mya — about 5 occurrences66–63 Mya — about 5 occurrences63–61 Mya — about 4 occurrences61–58 Mya — about 3 occurrences58–55 Mya — about 5 occurrences55–53 Mya — about 0.8 occurrences53–50 Mya — about 0.8 occurrences50–47 Mya — about 0.6 occurrences47–44 Mya — about 0.1 occurrences44–42 Mya — about 0.1 occurrences42–39 Mya — about 0.1 occurrences39–36 Mya — about 0.1 occurrences36–34 Mya — about 0.2 occurrences34–31 Mya — about 0.4 occurrences31–28 Mya — about 0.4 occurrences28–25 Mya — about 0.1 occurrences23–20 Mya — about 0.0 occurrences20–17 Mya — about 0.2 occurrences17–15 Mya — about 0.2 occurrences15–12 Mya — about 0.2 occurrences12–9.2 Mya — about 0.2 occurrences9.2–6.5 Mya — about 0.2 occurrences6.5–3.8 Mya — about 0.1 occurrences72.2 Mya20.45 Mya85 Mya4 Mya

39 occurrences of Euclastes 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

39 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

22 formations

Hornerstown — 39.76°N, 75.13°WHornerstown — 40.12°N, 74.55°WHornerstown — 39.97°N, 74.68°WHornerstown — 39.76°N, 75.16°WAquia — 37.78°N, 77.40°WAquia — 38.45°N, 77.25°WAquia — 38.42°N, 77.26°WVincentown — 39.97°N, 74.68°WVincentown — 39.76°N, 75.11°WQuiriquina — 36.70°S, 72.97°WQuiriquina — 36.59°S, 72.98°WCerro del Pueblo — 25.54°N, 101.36°WCerro del Pueblo — 25.55°N, 101.34°WNew Egypt — 39.73°N, 75.16°WWoodbury — 39.91°N, 75.03°WMoreno — 36.50°N, 120.69°WCouche II — 32.72°N, 6.78°WCouche 2 — 34.32°N, 5.85°WMocuio — 14.27°S, 12.38°EJagüel — 38.85°S, 67.87°WRoca — 37.67°S, 67.50°WTienen — 50.33°N, 4.28°EBrightseat — 38.89°N, 76.85°WNanjemoy — 38.07°N, 77.03°WAshley — 32.92°N, 79.95°WPietra Leccese — 40.35°N, 18.17°ECoachman — 34.24°N, 79.84°WBladen — 34.25°N, 79.72°WBracheux — 49.69°N, 2.28°Wcalcaire bioclastique à Lima carolina de l’ensemble supérieu — 49.42°N, 2.20°W

Loading coastlines…

The named rock units Euclastes has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.

Euclastes and its relatives

Late Cretaceous

Where Euclastes and its relatives were recorded in the Late Cretaceous.

Found in the same rock

476 taxa

The Paleobiology Database records 34 sites for Euclastes, 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

25 references

Each of the 39 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. 13 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 content2

Picture of Euclastes

Credit
Macrophyseter
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC Attribution-NonCommercial-NoDerivs
Commercial use
the licence does not allow it

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 itEuclastidae through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Cope 1870