Williamia peltoides

Williamia peltoides

Uncredited · via Wikidata/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
shield false limpetPBDB
Sits inside
WilliamiaPBDB
Diet
grazerPBDB, for Siphonariidae
Life habit
epifaunalPBDB, for Siphonariidae
Motility
facultatively mobile, attachedPBDB, for Siphonariidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At most 763 thousand years on record.

Every occurrence read is dated to somewhere between 774 ka and 11.7 ka, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Pleistocene — about 7 of 7 occurrencesPleistoceneHolocene — about 0 of 7 occurrences807 ka–764 ka Mya — about 0.0 occurrences764 ka–722 ka Mya — about 0.1 occurrences722 ka–679 ka Mya — about 0.1 occurrences679 ka–637 ka Mya — about 0.1 occurrences637 ka–595 ka Mya — about 0.1 occurrences595 ka–552 ka Mya — about 0.1 occurrences552 ka–510 ka Mya — about 0.1 occurrences510 ka–467 ka Mya — about 0.1 occurrences467 ka–425 ka Mya — about 0.1 occurrences425 ka–382 ka Mya — about 0.1 occurrences382 ka–340 ka Mya — about 0.1 occurrences340 ka–297 ka Mya — about 0.1 occurrences297 ka–255 ka Mya — about 0.1 occurrences255 ka–212 ka Mya — about 0.1 occurrences212 ka–170 ka Mya — about 0.1 occurrences170 ka–127 ka Mya — about 0.2 occurrences127 ka–85 ka Mya — about 2 occurrences85 ka–42 ka Mya — about 2 occurrences42 ka–0 Mya — about 1 occurrence1.27 Mya0 Mya

7 occurrences of Williamia peltoides 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

7 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

4 formations

Palos Verdes Sand — 33.99°N, 118.45°WPalos Verdes Sand — 33.60°N, 117.88°WLomita Marl — 33.75°N, 118.30°WSan Pedro Sand — 33.74°N, 118.28°WPalos Verdes — 33.63°N, 117.90°W

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The named rock units Williamia peltoides has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.

Williamia peltoides and its relatives

Pleistocene

Where Williamia peltoides and its relatives were recorded in the Pleistocene.

Found in the same rock

795 taxa

The Paleobiology Database records 6 sites for Williamia peltoides, 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

6 references

Each of the 7 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. 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 Williamia peltoides

Credit
nobody named on the record
Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record

No 3D scan of Williamia peltoides 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.

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itWilliamia through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Carpenter 1864)