Hallopora

Hallopora is an extinct genus of bryozoans of the family Halloporidae, first identified from the Lower Silurian period. They can be found in Ohio, Indiana, and Kentucky of the Midwestern United States, commonly in the Ordovician Kope Formation.

Hallopora

James St. John · CC BY 2.0 · via Wikipedia/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.

On record

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

Time the record covers

At least 42 million years on record.

The record covers at least 469.4 Mya to 426.7 Mya. No occurrence read is dated outside 471.3 Mya to 419.62 Mya.

Ordovician — about 299 of 346 occurrencesOrdovicianSilurian — about 47 of 346 occurrencesSilurianDevonian — about 0 of 346 occurrences472–471 Mya — about 1 occurrence471–469 Mya — about 2 occurrences469–467 Mya — about 2 occurrences467–465 Mya — about 3 occurrences465–463 Mya — about 2 occurrences463–462 Mya — about 2 occurrences462–460 Mya — about 3 occurrences460–458 Mya — about 5 occurrences458–456 Mya — about 25 occurrences456–454 Mya — about 24 occurrences454–453 Mya — about 45 occurrences453–451 Mya — about 48 occurrences451–449 Mya — about 41 occurrences449–447 Mya — about 21 occurrences447–445 Mya — about 21 occurrences445–444 Mya — about 37 occurrences444–442 Mya — about 16 occurrences442–440 Mya — about 5 occurrences440–438 Mya — about 4 occurrences438–437 Mya — about 3 occurrences437–435 Mya — about 3 occurrences435–433 Mya — about 3 occurrences433–431 Mya — about 6 occurrences431–429 Mya — about 6 occurrences429–428 Mya — about 6 occurrences428–426 Mya — about 4 occurrences426–424 Mya — about 1 occurrence424–422 Mya — about 1 occurrence422–420 Mya — about 0.5 occurrences420–419 Mya — about 0.2 occurrences469.4 Mya426.7 Mya472 Mya419 Mya

346 occurrences of Hallopora 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

346 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

107 formations

Verulam — 44.75°N, 79.33°WVerulam — 44.60°N, 78.97°WVerulam — 44.50°N, 78.58°WVerulam — 44.50°N, 78.67°WVerulam — 44.52°N, 78.97°WVerulam — 44.43°N, 78.78°WLexington Limestone — 38.00°N, 84.67°WLangåra — 59.89°N, 10.53°ELangåra — 59.84°N, 10.51°ERochester Shale — 43.15°N, 77.62°WRochester Shale — 43.15°N, 77.06°WRochester Shale — 43.20°N, 77.53°WRochester Shale — 43.10°N, 79.06°WRochester Shale — 43.17°N, 78.69°WBigby-Cannon Limestone — 35.50°N, 86.50°WLoka — 58.57°N, 15.07°ELoka — 61.07°N, 15.17°EHusbergøya — 59.89°N, 10.53°EHusbergøya — 59.85°N, 10.53°EHusbergøya — 59.86°N, 10.72°EWaynesville — 39.00°N, 84.00°WWaynesville — 41.00°N, 86.69°WEggleston — 37.00°N, 81.00°WEggleston — 37.10°N, 81.34°WEggleston — 37.13°N, 81.49°WEggleston — 37.03°N, 81.79°WEggleston — 37.13°N, 81.41°WLangøyene — 59.85°N, 10.50°ELangøyene — 59.87°N, 10.72°ELangøyene — 59.89°N, 10.54°EVasalemma — 59.28°N, 24.65°EVasalemma — 59.37°N, 26.99°EVasalemma — 59.24°N, 24.29°EArnheim — 39.00°N, 84.00°WLangoyen — 60.00°N, 11.00°ELangoyen — 59.88°N, 10.59°ELangara — 60.00°N, 11.00°ELangara — 59.88°N, 10.59°EKope — 39.00°N, 84.00°WBobcaygeon — 44.56°N, 78.98°WBobcaygeon — 44.67°N, 78.80°WBobcaygeon — 44.53°N, 78.55°WBobcaygeon — 44.58°N, 79.09°WBoda Limestone — 61.00°N, 15.00°EBoda Limestone — 60.98°N, 15.22°EGeorgian Bay — 45.75°N, 81.67°WGeorgian Bay — 43.67°N, 79.42°WZel’van — 52.00°N, 24.00°EBromide — 34.00°N, 97.00°WBromide — 34.48°N, 96.97°WRägavere — 59.35°N, 26.36°EDecorah Shale — 44.50°N, 92.90°WDecorah Shale — 44.95°N, 93.07°WDecorah Shale — 44.98°N, 93.26°WProsser — 44.50°N, 92.90°WProsser — 44.95°N, 93.07°WMartinsburg — 36.95°N, 81.08°WMartinsburg — 38.93°N, 78.20°WMartinsburg — 38.51°N, 78.63°W

Loading coastlines…

The named rock units Hallopora has been recovered from, largest first. Drawn where the rock is now, not where it formed. 83 further formations hold fewer occurrences each and are not listed. 95 occurrences have no formation on record, which is common for older literature.

Hallopora and its relatives

Ordovician

Where Hallopora and its relatives were recorded in the Ordovician.

Found in the same rock

1,838 taxa

The Paleobiology Database records 248 sites for Hallopora, and this reads 240 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

86 references

Each of the 346 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. 74 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 Hallopora

Credit
James St. John
Licence
CC BY 2.0
Commercial use
the licence allows it

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

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 itHalloporidae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Bassler 1911