Hemiphragma

Hemiphragma is an extinct genus of Middle Ordovician bryozoan. It had branching colonies with thick-walled zooecial apertures and lots of acanthopores, but few mesopores.

No picture of Hemiphragma 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, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
DittoporidaePBDB
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 21 million years on record.

The record covers at least 471.3 Mya to 450.1 Mya. No occurrence read is dated outside 486.85 Mya to 443.1 Mya.

Cambrian — about 0 of 73 occurrencesOrdovician — about 73 of 73 occurrencesOrdovicianSilurian — about 0 of 73 occurrences488–486 Mya — about 0.1 occurrences486–485 Mya — about 0.1 occurrences485–483 Mya — about 0.1 occurrences483–482 Mya — about 0.1 occurrences482–480 Mya — about 0.1 occurrences480–479 Mya — about 0.1 occurrences479–477 Mya — about 0.1 occurrences477–476 Mya — about 0.1 occurrences476–474 Mya — about 3 occurrences474–473 Mya — about 3 occurrences473–471 Mya — about 3 occurrences471–470 Mya — about 0.9 occurrences470–468 Mya — about 1 occurrence468–466 Mya — about 2 occurrences466–465 Mya — about 2 occurrences465–463 Mya — about 1 occurrence463–462 Mya — about 0.7 occurrences462–460 Mya — about 0.9 occurrences460–459 Mya — about 1 occurrence459–457 Mya — about 5 occurrences457–456 Mya — about 8 occurrences456–454 Mya — about 6 occurrences454–453 Mya — about 11 occurrences453–451 Mya — about 11 occurrences451–450 Mya — about 10 occurrences450–448 Mya — about 2 occurrences448–447 Mya — about 0.7 occurrences447–445 Mya — about 0.7 occurrences445–444 Mya — about 0.1 occurrences444–442 Mya — about 0.0 occurrences471.3 Mya450.1 Mya487.7 Mya442.2 Mya

73 occurrences of Hemiphragma 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

73 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

28 formations

Wardell — 37.00°N, 81.00°WWardell — 37.03°N, 81.79°WWardell — 37.02°N, 81.73°WWardell — 37.11°N, 81.52°WWardell — 37.10°N, 81.34°WDecorah Shale — 42.50°N, 91.25°WDecorah Shale — 44.98°N, 93.26°WLexington Limestone — 38.00°N, 84.67°WHolston — 35.92°N, 83.97°WHolston — 35.87°N, 84.07°WBobcaygeon — 44.56°N, 78.98°WBobcaygeon — 44.53°N, 78.55°WBobcaygeon — 44.58°N, 79.09°WKope — 39.00°N, 84.00°WCummingsville — 43.50°N, 91.50°WHermitage — 36.00°N, 83.00°WHermitage — 36.82°N, 84.52°WBromide — 34.00°N, 97.00°WVasalemma — 59.28°N, 24.65°EDunleith — 42.02°N, 93.45°WDalby — 57.00°N, 17.00°EPierce 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°WVerulam — 44.45°N, 78.70°WClays Ferry — 38.00°N, 84.67°WBowen — 36.63°N, 82.73°WGabian — 43.52°N, 3.25°EGlauzy — 43.53°N, 3.30°EMjøsa — 60.73°N, 11.00°ERägavere — 59.35°N, 26.36°EProsser — 44.50°N, 92.90°W

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The named rock units Hemiphragma has been recovered from, largest first. Drawn where the rock is now, not where it formed. 4 further formations hold fewer occurrences each and are not listed. 24 occurrences have no formation on record, which is common for older literature.

Hemiphragma and its relatives

Ordovician

Where Hemiphragma and its relatives were recorded in the Ordovician.

Found in the same rock

684 taxa

The Paleobiology Database records 60 sites for Hemiphragma, 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 73 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 content0

No picture of Hemiphragma 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, or no answer at all. This entry cannot say which.

No 3D scan of Hemiphragma 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.

The description on this site

Licence
CC BY-SA 4.0

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itDittoporidae through timeFormations of the OrdovicianThe world it lived on

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