Cyclostomiceras

via iDigBio · CC0 · via iDigBio. 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
- CyclostomiceratidaePBDB
- Diet
- carnivorePBDB, for Cephalopoda
- Life habit
- nektonicPBDB, for Cephalopoda
- Motility
- fast-movingPBDB, for Cephalopoda
- Vision
- well-developedPBDB, for Cephalopoda
- Environment
- marinePBDB, for Cephalopoda
Time the record covers
At least 18 million years on record.
The record covers at least 477.1 Mya to 458.2 Mya. No occurrence read is dated outside 486.85 Mya to 449.5 Mya.
15 occurrences of Cyclostomiceras 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
15 occurrences- Ordovician100%
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
8 formations
- Fort Cassin Formation · Beekmantown Group3
- Smithville Formation2
- Nanjinguan Formation1
- Taohuashi Formation1
- Panjiazui Formation1
- Schistes de Saint-Chinian Formation1
Loading coastlines…
The named rock units Cyclostomiceras has been recovered from, largest first. Drawn where the rock is now, not where it formed. 4 occurrences have no formation on record, which is common for older literature.
Cyclostomiceras and its relatives
OrdovicianWhere Cyclostomiceras and its relatives were recorded in the Ordovician.
Found in the same rock
90 taxa- Anazyga recurvirostra3 sites
- Bathocypris cylindrica3 sites
- Dinorthis3 sites
- Escharopora subrecta3 sites
- Favistella3 sites
- Glyptorthis3 sites
- Gonioceras3 sites
- Helicotoma tennesseensis3 sites
- Phacopidae3 sites
- Pionodema minuscula3 sites
- Rafinesquina3 sites
- Rhinidictya mutabilis3 sites
- Rhipidomena tennesseensis3 sites
- Rostricellula3 sites
- Scalites peracutum3 sites
- Solenopora3 sites
- Valcourea3 sites
- Asaphopsis2 sites
- Bactroceras2 sites
- Cassinoceras wortheni2 sites
- Centrotarphyceras seelyi2 sites
- Eurystomites kelloggi2 sites
- Expandocassinoceras grande2 sites
- Lawrenceoceras breve2 sites
The Paleobiology Database records 14 sites for Cyclostomiceras, 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- Ozarkian and Canadian cephalopods. Part II, Brevicones4
- Summary of regional geology of Hu''nan Province, China3
- Zonation of the Middle and Upper Ordovician strata in northwestern Georgia3
- Cephalopoda of the Beekmantown and Chazy formations of the Champlain Basin2
- Review and paleoecological analysis of the late Tremadocian – early Floian (Early Ordovician) cephalopod fauna of the Montagne Noire, France1
- Cephalopods and Paleoenvironments of the Fort Cassin Formation (Upper Lower Ordovician), eastern New York and adjacent Vermont1
- Contribucion al conocimiento de los Nautiloideos-Eopaleozoicos Argentinos. Parte I: Protocycloceratidae-Cyclostomiceratidae1
Each of the 15 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 content1

Picture of Cyclostomiceras
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Cyclostomiceras 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.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itCyclostomiceratidae through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Hyatt 1900