Rayonnoceras
Rayonnoceras is a genus of extinct cephalopods that lived around 325 million years ago during the Carboniferous. Although they resemble earlier actinocerids they are now thought to belong to the Pseudorthocerida

Notafly · CC BY-SA 3.0 · 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
- CarbactinoceratidaePBDB
- Diet
- carnivorePBDB, for Actinocerida
- Life habit
- nektobenthicPBDB, for Actinocerida
- Motility
- actively mobilePBDB, for Actinocerida
- Vision
- well-developedPBDB, for Cephalopoda
- Environment
- marinePBDB, for Cephalopoda
Time the record covers
At least 12 million years on record.
The record covers at least 335.9 Mya to 323.4 Mya. No occurrence read is dated outside 339.9 Mya to 298.9 Mya.
39 occurrences of Rayonnoceras on record, most of them in the Carboniferous. 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
39 occurrences- Carboniferous100%
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
9 formations
- Fayetteville Formation18
- Pitkin Formation10
- Caney Formation2
- Rest Spring Formation2
- Carey Formation1
- Great Blue Formation1
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The named rock units Rayonnoceras has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.
Rayonnoceras and its relatives
CarboniferousWhere Rayonnoceras and its relatives were recorded in the Carboniferous.
Found in the same rock
319 taxa- Reticycloceras croneisi8 sites
- Paracravenoceras ozarkense7 sites
- Euloxoceras angustius6 sites
- Glaphyrites fayettevillae6 sites
- Michelinoceras wapanuckense4 sites
- Euloxoceras greenei praecursor3 sites
- Eumorphoceras bisulcatum3 sites
- Eumorphoceras milleri3 sites
- Mitorthoceras crebriliratum3 sites
- Mitorthoceras perfilosum3 sites
- Pseudorthoceras stonense3 sites
- Stenoglaphyrites involutus3 sites
- Aviculopecten2 sites
- Bistrialites bicostatus2 sites
- Caneyella wapanuckensis2 sites
- Cardiomorpha2 sites
- Cravenoceras2 sites
- Diphyphyllum2 sites
- Eosyngastrioceras hesperium2 sites
- Fenestella2 sites
- Idioprioniodus2 sites
- Mariceras2 sites
- Ozarkodina2 sites
- Striatifera2 sites
The Paleobiology Database records 39 sites for Rayonnoceras, 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
7 references- Carboniferous Cephalopods of Arkansas32
- California Carboniferous cephalopods2
- Biostratigraphy of the Great Blue Formation1
- A Morrowan crinoid fauna from the Hueco Mountains of Texas1
- Early Pennsylvanian History of Ely Basin, Nevada1
- Type section of the Carey Shale1
- Paleoecology of the Carboniferous reef complex and shelf limestones in the northwest Derbyshire, England1
Each of the 39 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 content2
Picture of Rayonnoceras
- Source
- Wikipedia/Commons
- Credit
- Notafly
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
3D model
- Source
- Sketchfab
- Credit
- UIPaleoRepository
- Licence
- CC Attribution
- Commercial use
- cannot be read from the licence given — check the record
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 itCarbactinoceratidae through timeFormations of the CarboniferousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Croneis 1926