Helochelydridae

No picture of Helochelydridae was found. Wikidata and iDigBio were searched and had none. Wikipedia has a picture filed under this name, but nothing tied it to Helochelydridae itself, so it was not used. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Helochelydridae, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
TestudinataPBDB
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Diapsida

Time the record covers

At least 72 million years on record.

The record covers at least 145.06 Mya to 72.2 Mya. No occurrence read is dated outside 152.21 Mya to 66 Mya.

Late Jurassic — about 2 of 111 occurrencesLate JurassicEarly Cretaceous — about 54 of 111 occurrencesEarly CretaceousLate Cretaceous — about 55 of 111 occurrencesLate CretaceousPaleocene — about 0 of 111 occurrences154–151 Mya — about 0.2 occurrences151–148 Mya — about 0.6 occurrences148–145 Mya — about 0.9 occurrences145–142 Mya — about 1 occurrence142–139 Mya — about 3 occurrences139–136 Mya — about 2 occurrences136–133 Mya — about 4 occurrences133–130 Mya — about 2 occurrences130–127 Mya — about 2 occurrences127–124 Mya — about 3 occurrences124–121 Mya — about 3 occurrences121–118 Mya — about 4 occurrences118–115 Mya — about 5 occurrences115–112 Mya — about 6 occurrences112–109 Mya — about 6 occurrences109–106 Mya — about 4 occurrences106–103 Mya — about 5 occurrences103–100 Mya — about 5 occurrences100–97 Mya — about 7 occurrences97–94 Mya — about 7 occurrences94–91 Mya — about 1 occurrence91–88 Mya — about 0.6 occurrences88–85 Mya — about 1 occurrence85–82 Mya — about 5 occurrences82–79 Mya — about 7 occurrences79–76 Mya — about 7 occurrences76–73 Mya — about 7 occurrences73–70 Mya — about 5 occurrences70–67 Mya — about 5 occurrences67–64 Mya — about 2 occurrences145.06 Mya72.2 Mya154 Mya64 Mya

111 occurrences of Helochelydridae 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

111 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

47 formations

Cloverly — 45.38°N, 108.24°WCloverly — 44.98°N, 108.32°WCloverly — 45.44°N, 108.14°WCloverly — 45.23°N, 108.81°WCloverly — 45.47°N, 108.12°WCloverly — 45.26°N, 108.41°WCloverly — 44.65°N, 107.88°WCloverly — 44.51°N, 107.90°WCloverly — 44.50°N, 107.82°WCloverly — 44.44°N, 109.06°WCloverly — 45.80°N, 109.80°WCloverly — 45.49°N, 108.73°WAntlers — 33.28°N, 97.62°WAntlers — 33.50°N, 97.58°WAntlers — 34.15°N, 95.82°WVitoria — 42.66°N, 2.63°WWadhurst Clay — 50.86°N, 0.44°EWadhurst Clay — 50.86°N, 0.60°EWadhurst Clay — 50.84°N, 0.48°EPaluxy — 33.53°N, 97.56°WPaluxy — 33.15°N, 97.57°WPaluxy — 33.08°N, 97.64°WEl Gallo — 30.20°N, 115.79°WEl Gallo — 30.08°N, 115.78°WWest Melbury Marly Chalk — 52.20°N, 0.13°EForemost — 49.13°N, 110.87°WForemost — 49.60°N, 111.00°WCedar Mountain — 39.05°N, 111.04°WCedar Mountain — 38.64°N, 111.37°WIron Springs — 37.81°N, 112.81°WIron Springs — 37.57°N, 113.43°WSierra Perenchiza — 39.60°N, 0.97°WEscucha — 40.72°N, 0.72°WEscucha — 41.02°N, 0.57°WWeald Clay — 50.96°N, 0.12°WWeald Clay — 52.72°N, 1.44°WTunbridge Wells Sand — 50.91°N, 0.49°ETunbridge Wells Sand — 51.09°N, 0.17°WPinilla de los Moros — 42.15°N, 3.17°WEl Castellar — 40.66°N, 0.87°WEl Castellar — 40.46°N, 0.74°WLulworth — 50.60°N, 1.97°WGrès à Reptiles — 43.35°N, 2.95°EStraight Cliffs — 37.70°N, 113.00°WWahweap — 37.59°N, 112.90°WTwin Mountains — 32.76°N, 97.89°WAllueva — 40.75°N, 0.67°WKaskapau — 55.15°N, 120.93°WVegas de Matute — 41.08°N, 4.32°W

Loading coastlines…

The named rock units Helochelydridae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 23 further formations hold fewer occurrences each and are not listed. 25 occurrences have no formation on record, which is common for older literature.

Helochelydridae and its relatives

Late Cretaceous

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

Found in the same rock

755 taxa

The Paleobiology Database records 105 sites for Helochelydridae, 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

73 references

Each of the 111 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. 61 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 content1

CT scan

Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record
Specimen
Helochelydridae indet. · MAP:7828

No picture of Helochelydridae was found. Wikidata and iDigBio were searched and had none.

Wikipedia has a picture filed under this name, but nothing tied it to Helochelydridae itself, so it was not used.

Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Helochelydridae, or no answer at all. This entry cannot say which.

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 itTestudinata through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Nopcsa 1928)