Trigoniidae

Trigoniidae is a taxonomic family of saltwater clams, marine bivalve mollusks in the superfamily Trigonioidea. There is only one living genus, Neotrigonia, but in the geological past this family was well represented, widespread and common. The shells of species in this family are morphologically unusual, with very elaborate hinge teeth, and the exterior of the shell is highly ornamented.

Trigoniidae

Photograph taken by Mark A. Wilson (Department of Geology, The College of Wooster). [1] · 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
TrigonioideaPBDB
Diet
suspension feederPBDB
Life habit
shallow infaunalPBDB
Motility
fast-movingPBDB
Vision
blindPBDB
Environment
marinePBDB

Time the record covers

At least 293 million years on record.

The record covers at least 298.9 Mya to 5.333 Mya. No occurrence read is dated outside 303.7 Mya to 3.6 Mya.

Carboniferous — about 1 of 1415 occurrencesPermian — about 59 of 1415 occurrencesPermianEarly Triassic — about 0 of 1415 occurrencesMiddle Triassic — about 9 of 1415 occurrencesLate Triassic — about 114 of 1415 occurrencesLate TriassicEarly Jurassic — about 198 of 1415 occurrencesEarly JurassicMiddle Jurassic — about 394 of 1415 occurrencesLate Jurassic — about 132 of 1415 occurrencesEarly Cretaceous — about 293 of 1415 occurrencesEarly CretaceousLate Cretaceous — about 178 of 1415 occurrencesLate CretaceousPaleocene — about 3 of 1415 occurrencesEocene — about 0 of 1415 occurrencesOligocene — about 9 of 1415 occurrencesMiocene — about 24 of 1415 occurrencesPliocene — about 1 of 1415 occurrencesPleistocene — about 0 of 1415 occurrences310–299 Mya — about 0.9 occurrences299–289 Mya — about 2 occurrences289–279 Mya — about 9 occurrences279–268 Mya — about 12 occurrences268–258 Mya — about 27 occurrences258–248 Mya — about 9 occurrences248–237 Mya — about 9 occurrences237–227 Mya — about 22 occurrences227–217 Mya — about 28 occurrences217–206 Mya — about 33 occurrences206–196 Mya — about 57 occurrences196–186 Mya — about 88 occurrences186–175 Mya — about 80 occurrences175–165 Mya — about 258 occurrences165–155 Mya — about 191 occurrences155–145 Mya — about 74 occurrences145–134 Mya — about 67 occurrences134–124 Mya — about 80 occurrences124–114 Mya — about 87 occurrences114–103 Mya — about 48 occurrences103–93 Mya — about 45 occurrences93–83 Mya — about 34 occurrences83–72 Mya — about 37 occurrences72–62 Mya — about 79 occurrences62–52 Mya — about 3 occurrences41–31 Mya — about 0.4 occurrences31–21 Mya — about 10 occurrences21–10 Mya — about 16 occurrences10–0 Mya — about 7 occurrences298.9 Mya5.333 Mya310 Mya0 Mya

1,415 occurrences of Trigoniidae on record, most of them in the Middle Jurassic. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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

1,415 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

318 formations

Chari — 23.50°N, 70.50°ECarmel — 37.70°N, 113.05°WCarmel — 37.59°N, 113.06°WCarmel — 37.51°N, 113.13°WCarmel — 37.21°N, 113.30°WCarmel — 37.32°N, 113.85°WCarmel — 39.17°N, 110.74°WCarmel — 39.12°N, 110.75°WCarmel — 39.12°N, 110.75°WCarmel — 39.12°N, 110.86°WCarmel — 38.98°N, 110.88°WCarmel — 38.86°N, 110.91°WCarmel — 38.85°N, 110.90°WCarmel — 38.82°N, 111.00°WCarmel — 38.27°N, 110.51°WCarmel — 38.93°N, 110.42°WCarmel — 38.76°N, 110.47°WCarmel — 38.33°N, 111.52°WCarmel — 38.10°N, 111.93°WCarmel — 37.28°N, 112.51°WCarmel — 37.22°N, 112.68°WTwin Creek Limestone — 42.94°N, 110.51°WTwin Creek Limestone — 42.41°N, 111.04°WTwin Creek Limestone — 42.17°N, 110.83°WTwin Creek Limestone — 41.94°N, 110.86°WTwin Creek Limestone — 41.51°N, 111.30°WTwin Creek Limestone — 40.09°N, 111.38°WTwin Creek Limestone — 42.09°N, 110.46°WTwin Creek Limestone — 41.83°N, 110.87°WTwin Creek Limestone — 42.33°N, 110.50°WTwin Creek Limestone — 41.95°N, 110.46°WTwin Creek Limestone — 41.95°N, 110.45°WTwin Creek Limestone — 40.42°N, 110.80°WTwin Creek Limestone — 40.43°N, 110.72°WTwin Creek Limestone — 40.52°N, 110.43°WTwin Creek Limestone — 43.22°N, 110.65°WTwin Creek Limestone — 41.06°N, 111.54°WTwin Creek Limestone — 43.66°N, 111.33°WDhruma — 23.30°N, 46.33°EDhruma — 23.20°N, 46.33°EDhruma — 22.62°N, 46.00°EDhruma — 22.53°N, 46.17°EDhruma — 23.97°N, 46.17°EDhruma — 24.75°N, 46.00°EDhruma — 25.53°N, 45.00°EDhruma — 25.42°N, 45.00°EDhruma — 26.92°N, 44.00°EDhruma — 25.78°N, 45.25°EDhruma — 23.97°N, 46.00°EDhruma — 23.08°N, 46.33°EDhruma — 22.83°N, 46.83°EDhruma — 21.88°N, 45.83°EDhruma — 25.05°N, 45.67°EDhruma — 25.37°N, 45.50°EDhruma — 25.70°N, 45.67°EDhruma — 25.97°N, 45.00°EDhruma — 26.20°N, 44.83°EDhruma — 26.33°N, 44.83°ETataouine — 33.00°N, 10.47°EHabo beds — 23.20°N, 69.80°EOkarahia Sandstone — 42.57°S, 173.52°EOkarahia Sandstone — 42.55°S, 173.50°EMakatini — 27.17°S, 32.17°EMakatini — 27.36°S, 32.16°EMakatini — 27.53°S, 32.17°ELefipán — 42.67°S, 69.98°WLefipán — 42.69°S, 69.84°WLefipán — 42.83°S, 69.70°WLefipán — 42.49°S, 69.96°WAgrio — 38.98°S, 68.00°WAgrio — 37.80°S, 70.17°WAgrio — 38.73°S, 69.92°WAgrio — 38.15°S, 70.10°WNayband — 32.50°N, 57.35°ENayband — 33.00°N, 57.00°ENayband — 32.35°N, 57.45°ERoca — 37.55°S, 69.70°WRoca — 37.56°S, 69.85°WRoca — 37.54°S, 69.87°WRoca — 36.90°S, 67.92°WJan Juc — 38.32°S, 144.32°EJan Juc — 38.37°S, 144.27°ELefipan — 43.04°S, 69.33°WLefipan — 42.84°S, 69.71°WLefipan — 42.68°S, 69.84°WLefipan — 42.62°S, 69.98°WMadbi — 14.27°N, 48.56°EMadbi — 14.32°N, 48.45°ESawtooth — 48.18°N, 112.88°WSawtooth — 47.63°N, 112.71°WSawtooth — 47.78°N, 112.69°WSawtooth — 46.72°N, 113.30°WChhidru — 32.55°N, 71.78°EChhidru — 32.41°N, 72.10°EBarahona Limestone — 41.93°N, 3.15°WBarahona Limestone — 40.67°N, 1.20°WLautaro — 29.36°S, 70.40°WLautaro — 29.36°S, 70.19°WLautaro — 29.47°S, 70.16°WLautaro — 29.44°S, 70.13°WLautaro — 28.14°S, 69.96°WLautaro — 28.31°S, 69.96°WLautaro — 28.16°S, 69.86°WCalcaires pseudo-oolithiques superieurs — 49.88°N, 4.09°ECalcaires pseudo-oolithiques superieurs — 49.63°N, 4.92°ECalcaires pseudo-oolithiques superieurs — 49.88°N, 4.04°ECalcaires pseudo-oolithiques superieurs — 49.68°N, 4.61°ECalcaires pseudo-oolithiques superieurs — 49.83°N, 4.21°ECalcaires pseudo-oolithiques superieurs — 49.60°N, 4.96°ECalcaires pseudo-oolithiques superieurs — 49.64°N, 4.73°ECape Stewart Beds — 70.46°N, 22.71°WCape Stewart Beds — 70.47°N, 22.64°WRio Tascadero — 30.77°S, 70.58°WRio Tascadero — 30.88°S, 70.53°WRio Tascadero — 30.89°S, 70.55°WRio Tascadero — 30.96°S, 70.57°WKoranga Sandstone — 38.50°S, 177.35°EKoranga Sandstone — 38.41°S, 177.31°ETanohata — 39.85°N, 141.97°ETanohata — 40.00°N, 141.83°ETanohata — 39.92°N, 141.95°E

Loading coastlines…

The named rock units Trigoniidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 294 further formations hold fewer occurrences each and are not listed. 449 occurrences have no formation on record, which is common for older literature.

Trigoniidae and its relatives

Middle Jurassic

Where Trigoniidae and its relatives were recorded in the Middle Jurassic.

Found in the same rock

1,725 taxa

The Paleobiology Database records 1,059 sites for Trigoniidae, and this reads 240 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

319 references

Each of the 1,415 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. 307 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 Trigoniidae

Credit
Photograph taken by Mark A. Wilson (Department of Geology, The College of Wooster). [1]
Licence
Public Domain
Commercial use
the licence allows it

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

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 itTrigonioidea through timeFormations of the Middle JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Lamarck 1819