Chama

Chama is a genus of cemented saltwater clams, marine bivalve molluscs in the family Chamidae, the jewel boxes.

Chama

Hectonichus · CC BY-SA 3.0 · 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
ChamidaePBDB
Diet
suspension feederPBDB
Life habit
epifaunalPBDB
Motility
stationary, attached, epibiontPBDB
Vision
blindPBDB, for Bivalvia

Time the record covers

At least 121 million years on record.

The record covers at least 121.4 Mya to 11.7 ka. No occurrence read is dated outside 125.77 Mya to 0 Mya.

Early Cretaceous — about 1 of 774 occurrencesEarly CretaceousLate Cretaceous — about 12 of 774 occurrencesLate CretaceousPaleocene — about 6 of 774 occurrencesEocene — about 124 of 774 occurrencesEoceneOligocene — about 31 of 774 occurrencesOligoceneMiocene — about 194 of 774 occurrencesMiocenePliocene — about 126 of 774 occurrencesPleistocene — about 263 of 774 occurrences128–124 Mya — about 0.4 occurrences124–120 Mya — about 0.6 occurrences103–98 Mya — about 0.1 occurrences98–94 Mya — about 0.1 occurrences94–90 Mya — about 0.6 occurrences90–86 Mya — about 0.6 occurrences86–81 Mya — about 0.6 occurrences81–77 Mya — about 1.0 occurrences77–73 Mya — about 1.0 occurrences73–68 Mya — about 5 occurrences68–64 Mya — about 5 occurrences64–60 Mya — about 4 occurrences60–56 Mya — about 1 occurrence56–51 Mya — about 8 occurrences51–47 Mya — about 10 occurrences47–43 Mya — about 15 occurrences43–38 Mya — about 53 occurrences38–34 Mya — about 35 occurrences34–30 Mya — about 19 occurrences30–26 Mya — about 12 occurrences26–21 Mya — about 13 occurrences21–17 Mya — about 38 occurrences17–13 Mya — about 53 occurrences13–8.6 Mya — about 48 occurrences8.6–4.3 Mya — about 77 occurrences4.3–0 Mya — about 372 occurrences121.4 Mya11.7 ka128 Mya0 Mya

774 occurrences of Chama on record, most of them in the Pleistocene. 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

774 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

186 formations

Pirabas — 0.80°S, 47.13°WPirabas — 1.00°S, 48.00°WPirabas — 1.23°S, 47.40°WPirabas — 0.48°S, 48.17°WPirabas — 1.05°S, 47.16°WPirabas — 0.60°S, 47.31°WPirabas — 2.58°S, 43.38°WGatun — 9.35°N, 79.83°WGatun — 9.04°N, 80.65°WGatun — 9.38°N, 79.82°WGatun — 9.28°N, 79.91°WCook Mountain — 32.17°N, 88.83°WCook Mountain — 32.10°N, 88.86°WCook Mountain — 31.54°N, 87.52°WCook Mountain — 32.14°N, 89.00°WCook Mountain — 32.32°N, 89.16°WCook Mountain — 31.12°N, 95.90°WCook Mountain — 31.20°N, 95.73°WCook Mountain — 29.95°N, 97.14°WCook Mountain — 30.63°N, 96.55°WCook Mountain — 30.64°N, 96.52°WCook Mountain — 30.07°N, 97.08°WPalos Verdes Sand — 33.80°N, 118.16°WPalos Verdes Sand — 33.99°N, 118.45°WPalos Verdes Sand — 33.60°N, 117.88°WPalos Verdes Sand — 33.71°N, 118.27°WMare — 10.00°N, 64.00°WMare — 10.00°N, 71.00°WMare — 10.61°N, 63.52°WMare — 10.64°N, 64.11°WSantee Limestone — 33.45°N, 80.16°WSantee Limestone — 33.33°N, 80.15°WSantee Limestone — 33.41°N, 80.10°WSantee Limestone — 33.33°N, 79.69°WSantee Limestone — 33.35°N, 80.25°WSantee Limestone — 33.20°N, 80.01°WCaloosahatchee — 26.89°N, 82.01°WCaloosahatchee — 27.77°N, 82.68°WCaloosahatchee — 26.75°N, 80.93°WMorne l'Enfer — 10.23°N, 61.63°WTimms Point Silt — 33.73°N, 118.28°WBermont — 26.89°N, 82.01°WBermont — 27.72°N, 82.43°WBermont — 26.68°N, 80.67°WGurabo — 19.58°N, 71.25°WGurabo — 18.73°N, 71.00°WGurabo — 19.30°N, 70.50°WGurabo — 19.45°N, 70.70°WGurabo — 19.53°N, 71.33°WGurabo — 19.30°N, 71.67°WGurabo — 19.58°N, 71.05°WYorktown — 36.44°N, 77.10°WYorktown — 37.51°N, 77.21°WYorktown — 37.17°N, 76.77°WYorktown — 37.27°N, 76.57°WYorktown — 37.23°N, 76.51°WYorktown — 37.21°N, 76.69°WCastle Hayne — 34.64°N, 77.65°WCastle Hayne — 34.37°N, 77.86°WCastle Hayne — 34.23°N, 77.94°WCastle Hayne — 34.66°N, 77.70°WCayo Agua — 9.18°N, 82.05°WCayo Agua — 9.14°N, 82.01°WCayo Agua — 9.15°N, 82.03°WRed Bluff — 30.98°N, 88.73°WRed Bluff — 31.81°N, 88.69°WRed Bluff — 31.66°N, 88.66°WReklaw — 30.88°N, 95.38°WReklaw — 30.11°N, 97.32°WReklaw — 30.01°N, 97.26°WReklaw — 30.80°N, 96.72°WJackson Bluff — 30.43°N, 84.57°WIronshore — 19.33°N, 81.25°WCastilletes — 11.95°N, 71.32°WCastilletes — 11.96°N, 71.26°WCastilletes — 11.85°N, 71.36°WJimol — 12.03°N, 71.30°WJimol — 11.94°N, 71.36°WFernando — 34.05°N, 118.25°WFernando — 34.05°N, 118.25°WMoodys Branch — 32.23°N, 92.15°WMoodys Branch — 32.33°N, 90.15°WMoodys Branch — 31.67°N, 92.89°WMoodys Branch — 32.98°N, 90.30°WMint Spring — 30.98°N, 88.73°WMint Spring — 31.97°N, 89.50°WMint Spring — 32.17°N, 90.18°WMint Spring — 32.36°N, 90.87°WMint Spring — 31.66°N, 88.66°WSelsey — 50.73°N, 0.78°W

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The named rock units Chama has been recovered from, largest first. Drawn where the rock is now, not where it formed. 162 further formations hold fewer occurrences each and are not listed. 257 occurrences have no formation on record, which is common for older literature.

Chama and its relatives

Pleistocene

Where Chama and its relatives were recorded in the Pleistocene.

Found in the same rock

3,889 taxa

The Paleobiology Database records 410 sites for Chama, and this reads 240 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

258 references

Each of the 774 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. 246 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 content3

Picture of Chama

Credit
Hectonichus
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

Photogrammetry

Licence
In Copyright
Commercial use
cannot be read from the licence given — check the record
Specimen
Chama macerophylla · UF:Invertebrate Zoology:121184-Mollusca

3D model

Source
Sketchfab
Licence
CC0 Public Domain
Commercial use
the licence allows it

Smithsonian Open Access was 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 itChamidae through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Linnaeus 1758