Placosema bigranulosum

No picture of Placosema bigranulosum was found. Wikidata, iDigBio and Smithsonian Open Access were searched and had none. Wikipedia did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Placosema bigranulosum, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
PlacosemaPBDB
Diet
carnivorePBDB, for Trilobita
Life habit
low-level epifaunalPBDB, for Trilobita
Motility
fast-movingPBDB, for Trilobita
Vision
well-developedPBDB, for Catillicephalidae
Environment
marinePBDB, for Trilobita

Time the record covers

At most 14 million years on record.

Every occurrence read is dated to somewhere between 500.5 Mya and 486.85 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Cambrian — about 7 of 7 occurrencesCambrianOrdovician — about 0 of 7 occurrences501–500 Mya — about 0.1 occurrences500–500 Mya — about 0.1 occurrences500–499 Mya — about 0.1 occurrences499–499 Mya — about 0.1 occurrences499–498 Mya — about 0.1 occurrences498–498 Mya — about 0.1 occurrences498–497 Mya — about 0.1 occurrences497–497 Mya — about 0.6 occurrences497–496 Mya — about 0.7 occurrences496–496 Mya — about 0.7 occurrences496–495 Mya — about 0.7 occurrences495–495 Mya — about 0.7 occurrences495–494 Mya — about 0.6 occurrences494–494 Mya — about 0.1 occurrences494–493 Mya — about 0.1 occurrences493–493 Mya — about 0.1 occurrences493–492 Mya — about 0.1 occurrences492–492 Mya — about 0.1 occurrences492–491 Mya — about 0.1 occurrences491–491 Mya — about 0.1 occurrences491–490 Mya — about 0.1 occurrences490–490 Mya — about 0.1 occurrences490–489 Mya — about 0.1 occurrences489–489 Mya — about 0.1 occurrences489–488 Mya — about 0.1 occurrences488–488 Mya — about 0.1 occurrences488–487 Mya — about 0.1 occurrences487–487 Mya — about 0.1 occurrences501 Mya486.4 Mya

7 occurrences of Placosema bigranulosum on record, most of them in the Cambrian. 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

2 formations

Huaqiao — 28.39°N, 109.53°ESesong — 37.18°N, 128.78°E

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The named rock units Placosema bigranulosum has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Placosema bigranulosum and its relatives

Cambrian

Where Placosema bigranulosum and its relatives were recorded in the Cambrian.

Found in the same rock

7 taxa

The Paleobiology Database records 3 sites for Placosema bigranulosum, and this reads all of them. The number is how many of those sites it was catalogued from too.

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

2 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. Each entry links to doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content0

No picture of Placosema bigranulosum was found. Wikidata, iDigBio and Smithsonian Open Access were searched and had none.

Wikipedia did not answer, so this is what the others held rather than everything there is.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Placosema bigranulosum, or no answer at all. This entry cannot say which.

No 3D scan of Placosema bigranulosum was found in Smithsonian Open Access and Sketchfab.

MorphoSource was 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 itPlacosema through timeFormations of the CambrianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Peng et al. 2004