Dekayia

Dekayia is an extinct genus of Ordovician bryozoans of the family Heterotrypidae. Its colonies can be branching, encrusting, or massive. All species have acanthopores in varying sizes and numbers. The autozooecia appear angular or sub-angular viewed through a cross-section of the colony, and their walls are distinctively undulating or crenulated. Maculae generally protrude from the colony surface very little or at all, and can contain unusually large autozooecia and a cluster of mesozooecia in their centers.

No picture of Dekayia was found. Wikipedia, Wikidata, iDigBio and Smithsonian Open Access were searched and had none. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Dekayia, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
HeterotrypidaePBDB
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 9.4 million years on record.

The record covers at least 458.2 Mya to 448.8 Mya. No occurrence read is dated outside 486.85 Mya to 443.1 Mya.

Cambrian — about 0 of 66 occurrencesOrdovician — about 66 of 66 occurrencesOrdovicianSilurian — about 0 of 66 occurrences488–486 Mya — about 0.0 occurrences486–485 Mya — about 0.0 occurrences485–483 Mya — about 0.0 occurrences483–482 Mya — about 0.0 occurrences482–480 Mya — about 0.0 occurrences480–479 Mya — about 0.0 occurrences479–477 Mya — about 0.0 occurrences477–476 Mya — about 0.0 occurrences476–474 Mya — about 0.0 occurrences474–473 Mya — about 0.0 occurrences473–471 Mya — about 0.1 occurrences471–470 Mya — about 0.6 occurrences470–468 Mya — about 0.6 occurrences468–466 Mya — about 0.6 occurrences466–465 Mya — about 0.6 occurrences465–463 Mya — about 0.6 occurrences463–462 Mya — about 0.6 occurrences462–460 Mya — about 0.7 occurrences460–459 Mya — about 0.7 occurrences459–457 Mya — about 2 occurrences457–456 Mya — about 4 occurrences456–454 Mya — about 4 occurrences454–453 Mya — about 7 occurrences453–451 Mya — about 9 occurrences451–450 Mya — about 12 occurrences450–448 Mya — about 8 occurrences448–447 Mya — about 6 occurrences447–445 Mya — about 6 occurrences445–444 Mya — about 3 occurrences444–442 Mya — about 1 occurrence458.2 Mya448.8 Mya487.7 Mya442.2 Mya

66 occurrences of Dekayia 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

66 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

30 formations

Denley Limestone — 43.21°N, 75.46°WDenley Limestone — 44.00°N, 75.00°WDenley Limestone — 43.28°N, 75.14°WVerulam — 44.45°N, 78.70°WVerulam — 44.52°N, 78.97°WLexington Limestone — 38.00°N, 84.67°WGabian — 43.52°N, 3.25°EPin — 32.02°N, 78.05°EFairview — 39.00°N, 84.00°WBellevue — 39.00°N, 84.00°WCorryville — 39.00°N, 84.00°WSlade and Redhill Mudstone — 51.82°N, 4.63°WLeipers — 35.50°N, 86.50°WSugar River Limestone — 44.00°N, 75.00°WSugar River Limestone — 43.00°N, 75.00°WGlauzy — 43.53°N, 3.30°ESunblood — 62.00°N, 126.00°WKings Falls — 43.21°N, 75.46°WSugar River — 43.21°N, 75.46°WMartinsburg — 36.95°N, 81.08°WKope — 39.00°N, 84.00°WMount Auburn — 39.00°N, 84.00°WArnheim — 39.00°N, 84.00°WLexington Ls — 37.65°N, 84.77°WEsbataottine — 61.72°N, 125.93°WCalcaires et marnes schisteuses — 43.56°N, 3.31°EChaumont — 45.45°N, 76.69°WJifarah — 29.78°N, 12.28°E

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The named rock units Dekayia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 6 further formations hold fewer occurrences each and are not listed. 16 occurrences have no formation on record, which is common for older literature.

Dekayia and its relatives

Ordovician

Where Dekayia and its relatives were recorded in the Ordovician.

Found in the same rock

672 taxa

The Paleobiology Database records 48 sites for Dekayia, 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 66 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 content0

No picture of Dekayia was found. Wikipedia, Wikidata, iDigBio and Smithsonian Open Access were searched and had none.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Dekayia, or no answer at all. This entry cannot say which.

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 itHeterotrypidae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Milne-Edwards and Haime 1851