Pachymya

Pachymya

via iDigBio · CC0 · 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
PholadomyidaePBDB
Diet
suspension feederPBDB, for Pholadomyidae
Life habit
deep infaunalPBDB, for Pholadomyidae
Motility
facultatively mobilePBDB, for Pholadomyidae
Vision
blindPBDB, for Bivalvia

Time the record covers

At least 133 million years on record.

The record covers at least 205.7 Mya to 72.2 Mya. No occurrence read is dated outside 211.18 Mya to 66 Mya.

Late Triassic — about 1 of 61 occurrencesLate TriassicEarly Jurassic — about 34 of 61 occurrencesEarly JurassicMiddle Jurassic — about 3 of 61 occurrencesMiddle JurassicLate Jurassic — about 10 of 61 occurrencesLate JurassicEarly Cretaceous — about 3 of 61 occurrencesEarly CretaceousLate Cretaceous — about 9 of 61 occurrencesLate CretaceousPaleocene — about 0 of 61 occurrences214–209 Mya — about 0.4 occurrences209–204 Mya — about 0.6 occurrences204–199 Mya — about 0.4 occurrences199–194 Mya — about 3 occurrences194–189 Mya — about 8 occurrences189–184 Mya — about 12 occurrences184–179 Mya — about 11 occurrences179–174 Mya — about 0.1 occurrences174–169 Mya — about 0.1 occurrences169–164 Mya — about 1 occurrence164–159 Mya — about 2 occurrences159–154 Mya — about 1 occurrence154–149 Mya — about 3 occurrences149–144 Mya — about 6 occurrences144–139 Mya — about 0.4 occurrences134–129 Mya — about 1 occurrence129–123 Mya — about 0.8 occurrences108–103 Mya — about 0.5 occurrences103–98 Mya — about 0.8 occurrences98–93 Mya — about 0.7 occurrences93–88 Mya — about 0.3 occurrences88–83 Mya — about 1 occurrence83–78 Mya — about 0.3 occurrences78–73 Mya — about 0.3 occurrences73–68 Mya — about 4 occurrences68–63 Mya — about 2 occurrences205.7 Mya72.2 Mya214 Mya63 Mya

61 occurrences of Pachymya on record, most of them in the Early 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

61 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

17 formations

Lefipán — 42.67°S, 69.98°WKap Leslie — 70.48°N, 21.97°WAberhan Pliensbach — 33.47°S, 70.75°WHabo beds — 23.20°N, 69.80°EAmaltheenton — 49.79°N, 11.04°EAmaltheenton — 52.06°N, 8.28°EInagoe — 36.28°N, 137.13°EAlcobaca — 39.52°N, 9.13°WSierra Santa Rosa — 30.72°N, 112.55°WNayband — 33.00°N, 56.98°EDenison — 32.79°N, 97.32°WKorallenoolith — 52.13°N, 10.02°EThemed — 30.38°N, 33.52°ESierra de Santa Roas — 30.08°N, 111.67°WFadalto Limestone — 46.08°N, 12.34°EMassenkalk — 48.89°N, 11.94°ELa Ternera — 28.89°S, 70.32°WBuda Limestone — 30.26°N, 97.75°W

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The named rock units Pachymya has been recovered from, largest first. Drawn where the rock is now, not where it formed. 30 occurrences have no formation on record, which is common for older literature.

Pachymya and its relatives

Early Jurassic

Where Pachymya and its relatives were recorded in the Early Jurassic.

Found in the same rock

690 taxa

The Paleobiology Database records 52 sites for Pachymya, 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 61 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 content1

Picture of Pachymya

Source
iDigBio
Credit
via iDigBio
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Pachymya 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 itPholadomyidae through timeFormations of the Early JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Sowerby 1826