Hedstroemina

Hedstroemina Bancroft, 1929, a relative of Hedstroemina — not Hedstroemina itself

Not Hedstroemina. This is Hedstroemina Bancroft, 1929, a relative — both are Rafinesquinidae.

Männil, Ralf · CC BY-NC 4.0 · via GBIF. 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
Sits inside
RafinesquininaePBDB
Diet
suspension feederPBDB, for Rafinesquinidae
Life habit
epifaunalPBDB, for Rafinesquinidae
Motility
stationaryPBDB, for Rafinesquinidae
Vision
blindPBDB, for Strophomenata
Environment
marinePBDB, for Lophophorata

Time the record covers

At least 24 million years on record.

The record covers at least 469.4 Mya to 445.2 Mya. No occurrence read is dated outside 471.3 Mya to 443.1 Mya.

Ordovician — about 62 of 62 occurrencesOrdovicianSilurian — about 0 of 62 occurrences472–471 Mya — about 0.2 occurrences471–470 Mya — about 0.5 occurrences470–469 Mya — about 0.3 occurrences460–459 Mya — about 0.2 occurrences459–458 Mya — about 0.4 occurrences458–457 Mya — about 6 occurrences457–456 Mya — about 3 occurrences456–455 Mya — about 3 occurrences455–454 Mya — about 3 occurrences454–453 Mya — about 3 occurrences453–452 Mya — about 11 occurrences452–451 Mya — about 13 occurrences451–450 Mya — about 5 occurrences450–449 Mya — about 4 occurrences449–448 Mya — about 1 occurrence448–447 Mya — about 1 occurrence447–446 Mya — about 1 occurrence446–445 Mya — about 1 occurrence445–444 Mya — about 1 occurrence444–444 Mya — about 2 occurrences444–443 Mya — about 0.7 occurrences469.4 Mya445.2 Mya471.9 Mya442.5 Mya

62 occurrences of Hedstroemina 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

62 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

32 formations

Hirmuse — 59.00°N, 26.00°EHirmuse — 59.26°N, 27.00°EHirmuse — 59.31°N, 27.08°EHirmuse — 59.35°N, 26.39°ESeyahou — 27.86°N, 56.33°EArnestad — 60.00°N, 11.00°EArnestad — 60.09°N, 9.11°EPorto de Santa Anna — 40.00°N, 8.00°WPorto de Santa Anna — 40.38°N, 8.37°WEllis Bay — 49.81°N, 64.42°WEllis Bay — 49.81°N, 64.35°WActon Scott — 52.50°N, 2.82°WActon Scott — 53.07°N, 2.96°WCheney Longville — 52.71°N, 2.64°WCheney Longville — 52.47°N, 2.84°WArnestad - Frognerkilen — 60.07°N, 10.17°ELukstai — 55.67°N, 25.38°ELukstai — 56.55°N, 27.73°ENorderhov — 59.95°N, 10.66°EFrognerkilen — 60.00°N, 11.00°ETufs et calcaires de Rosan — 48.25°N, 4.48°WRosan — 48.00°N, 4.00°WLouredo — 40.00°N, 8.00°WCystoid Limestone — 41.00°N, 1.00°WWestfield Sandstone — 42.62°S, 146.37°ENant Hir — 52.90°N, 3.58°WGlyn Gower Siltstone — 52.90°N, 3.58°WGrange Allen — 53.50°N, 7.17°WGlauzy — 43.54°N, 3.31°ENant Hir Mudstones — 52.92°N, 3.60°WGlyn Gower Siltstones — 52.92°N, 3.60°WŠakiai — 54.56°N, 22.83°E

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The named rock units Hedstroemina has been recovered from, largest first. Drawn where the rock is now, not where it formed. 8 further formations hold fewer occurrences each and are not listed. 14 occurrences have no formation on record, which is common for older literature.

Hedstroemina and its relatives

Ordovician

Where Hedstroemina and its relatives were recorded in the Ordovician.

Found in the same rock

487 taxa

The Paleobiology Database records 57 sites for Hedstroemina, 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

26 references

Each of the 62 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. 14 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 Hedstroemina Bancroft, 1929

Source
GBIF
Credit
Männil, Ralf
Licence
CC BY-NC 4.0
Commercial use
the licence does not allow it

No 3D scan of Hedstroemina 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 itRafinesquininae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Bancroft 1929)