Chasmatopora

Chasmatopora is an extinct genus of bryozoans which existed in what is now Mongolia, China, Estonia, Russia, Poland, Argentina, the United States and Canada. It was described by Alcide d'Orbigny in 1849, and the type species is Chasmatopora tenella, which was originally described as a species of Retepora by Eichwald in 1842.

Chasmatopora

Joshua Lisec · CC BY-SA 4.0 · 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
PhylloporinidaePBDB
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 25 million years on record.

The record covers at least 458.2 Mya to 432.9 Mya. No occurrence read is dated outside 468 Mya to 426.7 Mya.

Ordovician — about 79 of 118 occurrencesOrdovicianSilurian — about 39 of 118 occurrencesSilurian469–467 Mya — about 0.1 occurrences467–466 Mya — about 0.1 occurrences466–465 Mya — about 0.1 occurrences465–463 Mya — about 0.1 occurrences463–462 Mya — about 0.1 occurrences462–460 Mya — about 0.1 occurrences460–459 Mya — about 0.1 occurrences459–457 Mya — about 4 occurrences457–456 Mya — about 10 occurrences456–455 Mya — about 10 occurrences455–453 Mya — about 11 occurrences453–452 Mya — about 11 occurrences452–450 Mya — about 12 occurrences450–449 Mya — about 12 occurrences449–447 Mya — about 3 occurrences447–446 Mya — about 3 occurrences446–444 Mya — about 2 occurrences444–443 Mya — about 1 occurrence443–442 Mya — about 0.9 occurrences442–440 Mya — about 2 occurrences440–439 Mya — about 5 occurrences439–437 Mya — about 2 occurrences437–436 Mya — about 2 occurrences436–434 Mya — about 2 occurrences434–433 Mya — about 2 occurrences433–432 Mya — about 7 occurrences432–430 Mya — about 7 occurrences430–429 Mya — about 4 occurrences429–427 Mya — about 4 occurrences427–426 Mya — about 2 occurrences458.2 Mya432.9 Mya468.8 Mya425.9 Mya

118 occurrences of Chasmatopora 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

118 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

40 formations

Benbolt — 37.10°N, 81.56°WBenbolt — 37.11°N, 81.52°WBenbolt — 37.10°N, 81.34°WBenbolt — 37.27°N, 81.00°WBenbolt — 37.08°N, 81.71°WBenbolt — 37.00°N, 81.67°WBenbolt — 37.00°N, 81.00°WBenbolt — 37.02°N, 81.63°WRochester — 43.16°N, 79.05°WRochester — 43.18°N, 78.72°WRochester — 43.16°N, 77.68°WRochester — 43.19°N, 77.56°WRochester — 43.24°N, 77.17°WRochester — 43.22°N, 77.02°WRochester — 43.19°N, 76.91°WRochester — 43.22°N, 76.81°WRochester — 43.26°N, 76.70°WRochester — 43.25°N, 76.64°WCarters — 35.80°N, 86.20°WCarters — 35.81°N, 86.13°WCarters — 36.14°N, 86.38°WCarters — 35.86°N, 86.59°WCystoid Limestone — 41.18°N, 1.23°WCystoid Limestone — 41.05°N, 0.92°WCystoid Limestone — 41.04°N, 0.85°WWardell — 37.00°N, 81.00°WWardell — 37.03°N, 81.79°WWardell — 37.02°N, 81.73°WWardell — 37.02°N, 81.63°WReynales — 43.17°N, 77.63°WReynales — 43.23°N, 77.33°WReynales — 43.18°N, 78.75°WLebanon — 36.04°N, 86.35°WJoslin Hill — 43.21°N, 75.46°WWolcott — 43.22°N, 77.34°WWolcott — 43.23°N, 77.21°WWolcott — 43.23°N, 76.98°WWolcott — 43.25°N, 76.87°WLebanon Limestone — 35.80°N, 86.13°WLebanon Limestone — 36.00°N, 86.45°WLebanon Limestone — 35.50°N, 86.50°WPierce Limestone — 35.97°N, 86.45°WPierce Limestone — 35.94°N, 86.38°WPierce Limestone — 35.50°N, 86.50°WClays Ferry — 37.59°N, 85.07°WCalloway Creek — 37.59°N, 85.07°WCalloway Creek — 37.46°N, 84.82°WCalloway Creek — 37.66°N, 85.17°WIrondequoit — 43.23°N, 76.98°WIrondequoit — 43.21°N, 76.88°WIrondequoit — 43.24°N, 76.80°WKope — 39.00°N, 84.00°WRidley Limestone — 35.82°N, 86.32°WRidley Limestone — 35.50°N, 86.50°WIrene Bay — 74.98°N, 95.88°WLantz Mills — 38.53°N, 78.60°WFairview — 39.00°N, 84.00°WLockport — 43.15°N, 77.62°WRochester Shale — 43.15°N, 77.62°WMurfreesboro Limestone — 35.94°N, 86.38°WAmadjuak — 66.00°N, 69.83°WCliffield — 37.00°N, 81.00°W

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The named rock units Chasmatopora has been recovered from, largest first. Drawn where the rock is now, not where it formed. 16 further formations hold fewer occurrences each and are not listed. 5 occurrences have no formation on record, which is common for older literature.

Chasmatopora and its relatives

Ordovician

Where Chasmatopora and its relatives were recorded in the Ordovician.

Found in the same rock

793 taxa

The Paleobiology Database records 112 sites for Chasmatopora, 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

23 references

Each of the 118 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. 11 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 Chasmatopora

Credit
Joshua Lisec
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

No 3D scan of Chasmatopora was found in MorphoSource and Sketchfab.

Smithsonian Open Access was 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 itPhylloporinidae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Eichwald 1860