Arcomya

Arcomya

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
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 146 million years on record.

The record covers at least 247 Mya to 100.5 Mya. No occurrence read is dated outside 248.6 Mya to 93.9 Mya.

Early Triassic — about 2 of 97 occurrencesMiddle Triassic — about 4 of 97 occurrencesLate Triassic — about 0 of 97 occurrencesEarly Jurassic — about 60 of 97 occurrencesEarly JurassicMiddle Jurassic — about 16 of 97 occurrencesLate Jurassic — about 14 of 97 occurrencesLate JurassicEarly Cretaceous — about 0 of 97 occurrencesLate Cretaceous — about 1 of 97 occurrences252–246 Mya — about 2 occurrences246–241 Mya — about 2 occurrences241–236 Mya — about 2 occurrences203–198 Mya — about 4 occurrences198–193 Mya — about 4 occurrences193–187 Mya — about 31 occurrences187–182 Mya — about 20 occurrences182–177 Mya — about 2 occurrences177–171 Mya — about 3 occurrences171–166 Mya — about 3 occurrences166–161 Mya — about 12 occurrences161–155 Mya — about 9 occurrences155–150 Mya — about 2 occurrences150–144 Mya — about 1 occurrence144–139 Mya — about 0.2 occurrences102–96 Mya — about 0.7 occurrences96–91 Mya — about 0.3 occurrences247 Mya100.5 Mya252 Mya91 Mya

97 occurrences of Arcomya 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

97 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

20 formations

Tataouine — 33.00°N, 10.47°ETataouine — 32.00°N, 10.47°ECape Stewart Beds — 70.44°N, 22.64°WCape Stewart Beds — 70.46°N, 22.71°WCape Stewart Beds — 70.47°N, 22.64°WCape Stewart — 70.45°N, 22.65°WCape Stewart — 70.44°N, 22.65°WCape Stewart — 70.47°N, 22.36°WCape Stewart — 70.46°N, 22.33°WMiddle Lias — 51.80°N, 1.88°WLower Lias — 51.80°N, 1.88°WChari — 23.50°N, 70.50°EMoenkopi — 37.06°N, 113.69°WMarmolata — 46.45°N, 11.87°EDogger — 54.50°N, 0.69°WCoralline Oolite — 54.23°N, 0.43°WMiddle Calcareous Grit — 54.21°N, 0.29°WTrigonia clavellata — 50.80°N, 2.28°WWhite Limestone — 51.75°N, 1.17°WSuwa — 33.33°N, 91.25°EHanifa — 26.33°N, 45.00°EZuhánya Limestone — 46.11°N, 18.22°EOolite Marl — 51.80°N, 1.88°WTurmiel Fm — 40.40°N, 1.50°WLa Ternera — 28.89°S, 70.32°WMiraflores — 18.77°S, 66.10°W

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The named rock units Arcomya has been recovered from, largest first. Drawn where the rock is now, not where it formed. 41 occurrences have no formation on record, which is common for older literature.

Arcomya and its relatives

Early Jurassic

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

Found in the same rock

534 taxa

The Paleobiology Database records 69 sites for Arcomya, 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

23 references

Each of the 97 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. 11 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 Arcomya

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

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

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. (Agassiz 1838)