Thyasiridae

Thyasiridae is a family of bivalve molluscs, including the cleft clams, in the order Lucinida.

Thyasiridae

Georg Ossian Sars · Public Domain · 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
LucinidaPBDB
Diet
suspension feeder, chemosymbioticPBDB
Life habit
infaunalPBDB
Motility
facultatively mobilePBDB
Vision
blindPBDB, for Bivalvia

Time the record covers

At least 236 million years on record.

The record covers at least 237 Mya to 11.7 ka. No occurrence read is dated outside 247 Mya to 0 Mya.

Early Triassic — about 0 of 354 occurrencesMiddle Triassic — about 1 of 354 occurrencesLate Triassic — about 0 of 354 occurrencesEarly Jurassic — about 1 of 354 occurrencesEarly JurassicMiddle Jurassic — about 0 of 354 occurrencesLate Jurassic — about 0 of 354 occurrencesEarly Cretaceous — about 4 of 354 occurrencesEarly CretaceousLate Cretaceous — about 38 of 354 occurrencesLate CretaceousPaleocene — about 20 of 354 occurrencesEocene — about 54 of 354 occurrencesEoceneOligocene — about 88 of 354 occurrencesMiocene — about 56 of 354 occurrencesPliocene — about 27 of 354 occurrencesPleistocene — about 56 of 354 occurrences252–244 Mya — about 0.3 occurrences244–235 Mya — about 0.7 occurrences193–185 Mya — about 0.9 occurrences185–176 Mya — about 0.1 occurrences151–143 Mya — about 0.1 occurrences143–134 Mya — about 0.9 occurrences118–109 Mya — about 2 occurrences109–101 Mya — about 1 occurrence101–92 Mya — about 3 occurrences92–84 Mya — about 6 occurrences84–76 Mya — about 12 occurrences76–67 Mya — about 15 occurrences67–59 Mya — about 14 occurrences59–50 Mya — about 16 occurrences50–42 Mya — about 10 occurrences42–34 Mya — about 39 occurrences34–25 Mya — about 64 occurrences25–17 Mya — about 37 occurrences17–8.4 Mya — about 32 occurrences8.4–0 Mya — about 100 occurrences237 Mya11.7 ka252 Mya0 Mya

354 occurrences of Thyasiridae on record, most of them in the Oligocene. The Paleobiology Database records this as a living group. 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

354 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

131 formations

Timms Point Silt — 33.73°N, 118.28°WLincoln Creek — 46.28°N, 123.81°WLincoln Creek — 46.60°N, 123.60°WLincoln Creek — 47.25°N, 123.53°WLincoln Creek — 46.49°N, 123.80°WPysht — 48.16°N, 123.90°WPysht — 48.15°N, 124.00°WKeasey — 46.58°N, 123.61°WKeasey — 45.75°N, 123.25°WKeasey — 46.00°N, 123.26°WKeasey — 45.88°N, 123.31°WLomita Marl — 33.75°N, 118.30°WLomita Marl — 33.74°N, 118.29°WPierre Shale — 43.27°N, 104.25°WPierre Shale — 42.93°N, 103.70°WMakah — 48.30°N, 124.42°WMakah — 48.32°N, 124.47°WMakah — 48.35°N, 124.55°WBlakeley — 47.58°N, 122.48°WBlakeley — 47.55°N, 122.34°WBlakeley — 48.22°N, 124.10°WBlakeley — 47.57°N, 122.42°WBasilika — 78.10°N, 14.53°EBasilika — 78.11°N, 14.60°EBasilika — 78.07°N, 14.28°ELondon Clay — 51.40°N, 0.83°ELondon Clay — 51.73°N, 0.48°ELondon Clay — 51.51°N, 0.24°ESagavanirktok — 69.96°N, 144.77°WSagavanirktok — 69.96°N, 144.73°WGakkhinskaya — 58.25°N, 158.75°EShitakara — 42.98°N, 144.38°EShitakara — 43.25°N, 144.08°EOmagari — 42.83°N, 143.67°EOmagari — 44.66°N, 142.04°EPoronai — 43.25°N, 141.97°EPoronai — 43.26°N, 141.89°EPoronai — 43.23°N, 141.87°EKangilia — 70.33°N, 53.08°WSan Pedro Sand — 33.74°N, 118.28°WSan Pedro Sand — 33.75°N, 118.29°WOkhonchevayamskaya — 60.42°N, 165.92°EIl'inskaya — 57.78°N, 158.58°ELa Meseta — 64.23°S, 56.65°WLa Meseta — 64.26°S, 56.66°WLa Meseta — 64.23°S, 56.63°WKamicharo — 43.08°N, 143.83°EKamicharo — 42.95°N, 144.07°EAleksandrovskaya — 49.11°N, 142.90°EMaruyamskaya — 47.42°N, 142.50°EKap Kobenhavn — 82.38°N, 21.00°WKap Kobenhavn — 82.47°N, 21.00°W

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The named rock units Thyasiridae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 107 further formations hold fewer occurrences each and are not listed. 75 occurrences have no formation on record, which is common for older literature.

Thyasiridae and its relatives

Oligocene

Where Thyasiridae and its relatives were recorded in the Oligocene.

Found in the same rock

3,697 taxa

The Paleobiology Database records 203 sites for Thyasiridae, and this reads all of them. Of that, one read hit the database's own return limit, so every count below is a floor rather than a total. 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

146 references

Each of the 354 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. 134 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 Thyasiridae

Credit
Georg Ossian Sars
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Thyasiridae 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.

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 itLucinida through timeFormations of the OligoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Dall 1901