Hedstroemia halimedoidea

A picture published with the record for Hedstroemia halimedoidea. What it shows has not been checked.

August Rothpletz (1853-1918) · Public Domain · 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.

Time the record covers

At least 26 million years on record.

The record covers at least 452.8 Mya to 426.7 Mya. No occurrence read is dated outside 458.2 Mya to 422.7 Mya.

Ordovician — about 6 of 9 occurrencesOrdovicianSilurian — about 3 of 9 occurrencesSilurian459–458 Mya — about 0.3 occurrences458–456 Mya — about 0.7 occurrences456–455 Mya — about 0.7 occurrences455–454 Mya — about 0.7 occurrences454–453 Mya — about 0.7 occurrences453–452 Mya — about 0.5 occurrences452–450 Mya — about 0.5 occurrences450–449 Mya — about 0.5 occurrences449–448 Mya — about 0.5 occurrences448–447 Mya — about 0.5 occurrences447–445 Mya — about 0.5 occurrences445–444 Mya — about 0.1 occurrences444–443 Mya — about 0.0 occurrences443–442 Mya — about 0.2 occurrences442–440 Mya — about 0.2 occurrences440–439 Mya — about 0.2 occurrences439–438 Mya — about 0.2 occurrences438–437 Mya — about 0.2 occurrences437–436 Mya — about 0.2 occurrences436–434 Mya — about 0.2 occurrences434–433 Mya — about 0.2 occurrences433–432 Mya — about 0.0 occurrences427–426 Mya — about 0.3 occurrences426–424 Mya — about 0.3 occurrences424–423 Mya — about 0.3 occurrences423–422 Mya — about 0.1 occurrences452.8 Mya426.7 Mya458.9 Mya422 Mya

9 occurrences of Hedstroemia halimedoidea on record, most of them in the Ordovician. 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

9 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

Beiguoshan — 35.02°N, 106.66°EBeiguoshan — 34.69°N, 108.63°EPingliang — 38.82°N, 107.75°ELa Vieille — 48.18°N, 64.97°WLa Vieille — 48.13°N, 65.82°WMuksha Subsuite — 48.62°N, 26.73°E

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

Hedstroemia halimedoidea and its relatives

Ordovician

Where Hedstroemia halimedoidea and its relatives were recorded in the Ordovician.

Found in the same rock

27 taxa

The Paleobiology Database records 9 sites for Hedstroemia halimedoidea, 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

3 references

Each of the 9 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 Hedstroemia halimedoidea

Credit
August Rothpletz (1853-1918)
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Hedstroemia halimedoidea 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 itFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.