Chlamys hastata

Chlamys hastata, the spear scallop, spiny scallop or swimming scallop, is a species of bivalve mollusc in the family Pectinidae found on the west coast of North America from the Gulf of Alaska to San Diego, California. A limited number of these scallops are harvested by divers or by narrow trawls off the west coast of Canada.

Chlamys hastata

Daniel Hershman from Federal Way, US · CC BY 2.0 · 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
Also called
spear scallopPBDB
Sits inside
ChlamysPBDB
Diet
suspension feederPBDB, for Chlamys
Life habit
epifaunalPBDB, for Chlamys
Motility
stationary, attachedPBDB, for Chlamys
Vision
limitedPBDB, for Pectinidae
Environment
marinePBDB, for Pectinida

Time the record covers

At least 5.3 million years on record.

The record covers at least 5.333 Mya to 11.7 ka. No occurrence read is dated outside 23.04 Mya to 0 Mya.

Oligocene — about 0 of 83 occurrencesMiocene — about 2 of 83 occurrencesMiocenePliocene — about 26 of 83 occurrencesPliocenePleistocene — about 54 of 83 occurrencesPleistocene24–23 Mya — about 0.0 occurrences23–22 Mya — about 0.0 occurrences22–21 Mya — about 0.0 occurrences21–20 Mya — about 0.0 occurrences20–20 Mya — about 0.0 occurrences20–19 Mya — about 0.0 occurrences19–18 Mya — about 0.0 occurrences18–17 Mya — about 0.0 occurrences17–16 Mya — about 0.0 occurrences16–16 Mya — about 0.0 occurrences16–15 Mya — about 0.0 occurrences15–14 Mya — about 0.0 occurrences14–13 Mya — about 0.0 occurrences13–13 Mya — about 0.0 occurrences13–12 Mya — about 0.0 occurrences12–11 Mya — about 0.2 occurrences11–10 Mya — about 0.2 occurrences10–9.4 Mya — about 0.2 occurrences9.4–8.6 Mya — about 0.2 occurrences8.6–7.8 Mya — about 0.2 occurrences7.8–7.1 Mya — about 0.2 occurrences7.1–6.3 Mya — about 0.2 occurrences6.3–5.5 Mya — about 0.2 occurrences5.5–4.7 Mya — about 4 occurrences4.7–3.9 Mya — about 5 occurrences3.9–3.1 Mya — about 9 occurrences3.1–2.4 Mya — about 13 occurrences2.4–1.6 Mya — about 13 occurrences1.6–785 ka Mya — about 3 occurrences785 ka–0 Mya — about 34 occurrences5.333 Mya11.7 ka23.5 Mya0 Mya

83 occurrences of Chlamys hastata 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

83 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

19 formations

Careaga Sandstone — 34.88°N, 120.51°WCareaga Sandstone — 34.84°N, 120.41°WCareaga Sandstone — 34.90°N, 120.32°WCareaga Sandstone — 34.74°N, 120.41°WTimms Point Silt — 33.73°N, 118.28°WPico — 33.94°N, 117.89°WPico — 34.36°N, 118.56°WPico — 34.33°N, 118.72°WLomita Marl — 33.75°N, 118.30°WLomita Marl — 33.74°N, 118.29°WSan Diego — 32.80°N, 117.26°WSan Diego — 34.04°N, 118.53°WSan Diego — 32.54°N, 117.11°WSan Diego — 32.80°N, 117.24°WPalos Verdes Sand — 33.99°N, 118.45°WPalos Verdes Sand — 33.60°N, 117.88°WPalos Verdes Sand — 33.72°N, 118.28°WUnnamed — 33.24°N, 119.51°WSan Pedro Sand — 33.74°N, 118.28°WSan Pedro — 33.93°N, 117.95°WSan Pedro — 33.80°N, 118.16°WSanta Barbara — 34.38°N, 119.47°WSanta Barbara — 34.41°N, 119.72°WFoxen Mudstone — 34.88°N, 120.51°WAnchor — 34.04°N, 118.40°WPurisima — 37.05°N, 122.01°WSalada — 27.70°N, 114.90°WUst'-Limimtevayamskaya — 58.97°N, 163.92°EFernando — 34.05°N, 118.25°WWilson Grove — 38.34°N, 122.84°WJacalitos — 35.95°N, 120.17°WEtchegoin — 36.20°N, 120.67°W

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The named rock units Chlamys hastata has been recovered from, largest first. Drawn where the rock is now, not where it formed. 17 occurrences have no formation on record, which is common for older literature.

Chlamys hastata and its relatives

Pleistocene

Where Chlamys hastata and its relatives were recorded in the Pleistocene.

Found in the same rock

1,427 taxa

The Paleobiology Database records 59 sites for Chlamys hastata, 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

36 references

Each of the 83 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. 24 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 Chlamys hastata

Credit
Daniel Hershman from Federal Way, US
Licence
CC BY 2.0
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 itChlamys through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Sowerby 1842)