Megastraea undosa

Megastraea undosa, common name the wavy turban snail, is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails. This species is native to the coast of California.

Megastraea undosa

Shellnut · 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
Also called
wavy turbanPBDB
Sits inside
MegastraeaPBDB
Diet
grazerPBDB, for Turbinidae
Life habit
epifaunalPBDB, for Turbinidae
Motility
actively mobilePBDB, for Turbinidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 2.5 million years on record.

The record covers at least 2.58 Mya to 11.7 ka. No occurrence read is dated outside 5.333 Mya to 0 Mya.

Miocene — about 0 of 50 occurrencesPliocene — about 2 of 50 occurrencesPliocenePleistocene — about 47 of 50 occurrencesPleistoceneHolocene — about 1 of 50 occurrences5.4–5.3 Mya — about 0.0 occurrences5.3–5.1 Mya — about 0.1 occurrences5.1–4.9 Mya — about 0.1 occurrences4.9–4.7 Mya — about 0.1 occurrences4.7–4.5 Mya — about 0.1 occurrences4.5–4.3 Mya — about 0.1 occurrences4.3–4.1 Mya — about 0.1 occurrences4.1–3.9 Mya — about 0.1 occurrences3.9–3.7 Mya — about 0.1 occurrences3.7–3.5 Mya — about 0.2 occurrences3.5–3.3 Mya — about 0.4 occurrences3.3–3.1 Mya — about 0.4 occurrences3.1–2.9 Mya — about 0.4 occurrences2.9–2.7 Mya — about 0.4 occurrences2.7–2.5 Mya — about 0.5 occurrences2.5–2.3 Mya — about 1.0 occurrences2.3–2.1 Mya — about 1.0 occurrences2.1–1.9 Mya — about 1.0 occurrences1.9–1.8 Mya — about 0.9 occurrences1.8–1.6 Mya — about 0.6 occurrences1.6–1.4 Mya — about 0.6 occurrences1.4–1.2 Mya — about 0.6 occurrences1.2–972 ka Mya — about 0.6 occurrences972 ka–778 ka Mya — about 0.6 occurrences778 ka–583 ka Mya — about 3 occurrences583 ka–389 ka Mya — about 3 occurrences389 ka–194 ka Mya — about 3 occurrences194 ka–0 Mya — about 31 occurrences2.58 Mya11.7 ka5.8 Mya0 Mya

50 occurrences of Megastraea undosa 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

50 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

12 formations

Palos Verdes Sand — 33.99°N, 118.45°WPalos Verdes Sand — 33.60°N, 117.88°WPalos Verdes Sand — 33.74°N, 118.28°WPalos Verdes Sand — 33.66°N, 117.94°WDiscovery Point — 29.00°N, 118.27°WDiscovery Point — 29.00°N, 118.23°WLomita Marl — 33.75°N, 118.30°WQuaternary terrace — 33.74°N, 118.33°WQuaternary terrace — 33.75°N, 118.30°WPico — 34.36°N, 118.56°WPalos Verdes — 33.63°N, 117.90°WUnnamed — 33.24°N, 119.47°WSan Pedro — 33.93°N, 117.95°WBay Point — 32.78°N, 117.24°WCareaga Sandstone — 34.88°N, 120.51°WTimms Point Silt — 33.71°N, 118.27°WNiguel — 33.64°N, 117.89°W

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The named rock units Megastraea undosa 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.

Megastraea undosa and its relatives

Pleistocene

Where Megastraea undosa and its relatives were recorded in the Pleistocene.

Found in the same rock

1,072 taxa

The Paleobiology Database records 43 sites for Megastraea undosa, 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

29 references

Each of the 50 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. 17 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 Megastraea undosa

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

No 3D scan of Megastraea undosa 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 itMegastraea through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Wood 1828)