Hemiphragma irrasum

No picture of Hemiphragma irrasum was found. Wikipedia, Wikidata and iDigBio were searched and had none. Smithsonian Open Access 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 Hemiphragma irrasum, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
HemiphragmaPBDB
Diet
suspension feederPBDB, for Stenolaemata
Life habit
epifaunalPBDB, for Bryozoa
Motility
stationary, attachedPBDB, for Stenolaemata
Vision
blindPBDB, for Stenolaemata
Environment
marinePBDB, for Lophophorata

Time the record covers

At least 7 million years on record.

The record covers at least 464.3 Mya to 457.3 Mya. No occurrence read is dated outside 469.1 Mya to 449.6 Mya.

Ordovician — about 11 of 11 occurrencesOrdovician470–469 Mya — about 0.0 occurrences469–468 Mya — about 0.1 occurrences468–468 Mya — about 0.1 occurrences468–467 Mya — about 0.1 occurrences467–466 Mya — about 0.1 occurrences466–466 Mya — about 0.1 occurrences466–465 Mya — about 0.1 occurrences465–464 Mya — about 0.1 occurrences457–457 Mya — about 0.9 occurrences457–456 Mya — about 0.9 occurrences456–455 Mya — about 0.9 occurrences455–455 Mya — about 0.9 occurrences455–454 Mya — about 0.9 occurrences454–453 Mya — about 0.9 occurrences453–453 Mya — about 0.9 occurrences453–452 Mya — about 0.9 occurrences452–451 Mya — about 0.9 occurrences451–450 Mya — about 0.9 occurrences450–450 Mya — about 0.9 occurrences450–449 Mya — about 0.2 occurrences464.3 Mya457.3 Mya469.6 Mya449.1 Mya

11 occurrences of Hemiphragma irrasum 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

11 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

7 formations

Decorah Shale — 42.50°N, 91.25°WDecorah Shale — 44.98°N, 93.26°WPierce Limestone — 35.50°N, 86.50°WRidley Limestone — 35.50°N, 86.50°WGuttenberg — 42.50°N, 91.25°WIon — 42.50°N, 91.25°WCummingsville — 43.50°N, 91.50°WBromide — 34.00°N, 97.00°W

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The named rock units Hemiphragma irrasum 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.

Hemiphragma irrasum and its relatives

Ordovician

Where Hemiphragma irrasum and its relatives were recorded in the Ordovician.

Found in the same rock

102 taxa

The Paleobiology Database records 11 sites for Hemiphragma irrasum, 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

4 references

Each of the 11 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 content0

No picture of Hemiphragma irrasum was found. Wikipedia, Wikidata and iDigBio were searched and had none.

Smithsonian Open Access 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 Hemiphragma irrasum, or no answer at all. This entry cannot say which.

No 3D scan of Hemiphragma irrasum 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 itHemiphragma through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Ulrich 1893)