Cyrtolites
Cyrtolites is an extinct genus of monoplacophorans in the family Cyrtolitidae.Names brought to synonymy Cyrtolites elegans S.A. Miller 1874, a synonym for Phragmolites elegans

Internet Archive Book Images · No restrictions · 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
- CyrtolitidaePBDB
- Diet
- grazerPBDB, for Cyrtonellida
- Life habit
- low-level epifaunalPBDB, for Cyrtonellida
- Motility
- slow-movingPBDB, for Cyrtonellida
- Vision
- blindPBDB, for Tergomya
Time the record covers
At least 83 million years on record.
The record covers at least 471.3 Mya to 387.95 Mya. No occurrence read is dated outside 473.1 Mya to 382.31 Mya.
166 occurrences of Cyrtolites 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
166 occurrences- Ordovician91%
- Silurian4%
- Devonian5%
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
62 formations
- Lexington Limestone Formation21
- Dunleith Formation · Galena Group13
- Clays Ferry Formation10
- Lexington Formation10
- Waynesville Formation9
- Kope Formation7
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The named rock units Cyrtolites has been recovered from, largest first. Drawn where the rock is now, not where it formed. 38 further formations hold fewer occurrences each and are not listed. 6 occurrences have no formation on record, which is common for older literature.
Cyrtolites and its relatives
OrdovicianWhere Cyrtolites and its relatives were recorded in the Ordovician.
Found in the same rock
1,410 taxa- Ctenodonta33 sites
- Modiolopsis31 sites
- Orthodesma31 sites
- Ambonychia28 sites
- Lophospira perangulata27 sites
- Nuculites27 sites
- Cyrtodonta25 sites
- Hormotoma gracilis25 sites
- Modiolodon25 sites
- Cyrtodontula24 sites
- Lophospira24 sites
- Lyrodesma23 sites
- Sinuites cancellatus23 sites
- Clathrospira subconica21 sites
- Sphenosphaera rogersensis21 sites
- Similodonta20 sites
- Cymatonota19 sites
- Rafinesquina19 sites
- Vanuxemia19 sites
- Zygospira18 sites
- Cyclonema textilis17 sites
- Sphenolium17 sites
- Tetranota bidorsata17 sites
- Clathrospira conica16 sites
The Paleobiology Database records 150 sites for Cyrtolites, 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
40 references- Middle and Upper Ordovician symmetrical univalved mollusks (Monoplacophora and Bellerophontina) of the Cincinnati Arch region34
- Stratigraphic ranges of Middle and Late Ordovician Gastropoda and Monoplacophora of Minnesota29
- Upper Ordovician faunas of Ontario and Quebec12
- The fossil fauna of the Ordovician in the Cincinnati Region11
- Lithostratigraphy and depositional environments of the Lexington Limestone (Ordovician) of central Kentucky8
- Caradoc marine benthic communities of the South Berwyn Hills, North Wales7
- Gradient ecology of a biotic invasion: biofacies of the type Cincinnatian Series (Upper Ordovician), Cincinnati, Ohio region, USA6
- Pre-Chattanooga stratigraphy in Central Tennessee5
- The Lower Silurian Gastropoda of Minnesota5
- Taxonomic richness and abundance of Late Ordovician gastropods and bivalves in mollusc-rich strata of the Cincinnati Arch4
- The Ordovician-Silurian boundary in the Garth area of southwest Powys, Wales4
- Perner, 19034
Each of the 166 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. 28 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 Cyrtolites
- Source
- Wikipedia/Commons
- Credit
- Internet Archive Book Images
- Licence
- No restrictions
- Commercial use
- cannot be read from the licence given — check the record
No 3D scan of Cyrtolites 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
- Source
- Wikipedia, “Cyrtolites”
- 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 itCyrtolitidae through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Conrad 1838)