Hedstromia sp.

A picture published with the record for Hedstromia sp.. What it shows has not been checked.

Smithsonian Institution · CC0 · via Smithsonian. 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 32 million years on record.

The record covers at least 445.2 Mya to 413.02 Mya. No occurrence read is dated outside 452.8 Mya to 393.47 Mya.

Ordovician — about 2 of 4 occurrencesOrdovicianSilurian — about 0 of 4 occurrencesDevonian — about 2 of 4 occurrencesDevonian454–452 Mya — about 0.2 occurrences452–450 Mya — about 0.5 occurrences450–448 Mya — about 0.5 occurrences448–446 Mya — about 0.5 occurrences446–444 Mya — about 0.1 occurrences421–419 Mya — about 0.1 occurrences419–417 Mya — about 0.3 occurrences417–415 Mya — about 0.3 occurrences415–413 Mya — about 0.3 occurrences413–411 Mya — about 0.1 occurrences411–409 Mya — about 0.1 occurrences409–407 Mya — about 0.1 occurrences407–405 Mya — about 0.1 occurrences405–403 Mya — about 0.1 occurrences403–401 Mya — about 0.1 occurrences401–398 Mya — about 0.1 occurrences398–396 Mya — about 0.1 occurrences396–394 Mya — about 0.1 occurrences394–392 Mya — about 0.0 occurrences445.2 Mya413.02 Mya454 Mya392 Mya

4 occurrences of Hedstromia sp. 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

4 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

3 formations

Verkhneargskaya — 39.00°N, 69.00°ETurkparidinskaya — 39.00°N, 69.00°ELianglitag — 38.60°N, 79.55°E

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The named rock units Hedstromia sp. has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Hedstromia sp. and its relatives

Ordovician

Where Hedstromia sp. and its relatives were recorded in the Ordovician.

Found in the same rock

56 taxa

The Paleobiology Database records 3 sites for Hedstromia sp., 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 4 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 Hedstromia sp.

Source
Smithsonian
Credit
Smithsonian Institution
Licence
CC0 — this site’s default, not the record’s
Commercial use
the licence allows it

No 3D scan of Hedstromia sp. 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 itFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.