Cyrtina
Searched as Cyrtina heteroclita intermedia. The Paleobiology Database treats Cyrtina as the accepted name.

Dwergenpaartje · CC BY-SA 3.0 · via Wikidata/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
- CyrtinidaePBDB
- Diet
- suspension feederPBDB, for Spiriferinida
- Life habit
- low-level epifaunalPBDB, for Spiriferinida
- Motility
- stationaryPBDB, for Spiriferinida
- Vision
- blindPBDB, for Rhynchonellata
- Environment
- marinePBDB, for Lophophorata
Time the record covers
At most 12 million years on record.
Every occurrence read is dated to somewhere between 399.5 Mya and 387.95 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
4 occurrences of Cyrtina on record, most of them in the Devonian. 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
4 occurrences- Devonian100%
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
2 formations
- Selscheid Formation3
- Valporquero Formation · La Vid Group1
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The named rock units Cyrtina has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Cyrtina and its relatives
DevonianWhere Cyrtina and its relatives were recorded in the Devonian.
Found in the same rock
1,868 taxa- Schizophoria75 sites
- Ambocoelia60 sites
- Atrypa60 sites
- Nucleospira60 sites
- Howellella58 sites
- Bryozoa51 sites
- Crinoidea48 sites
- Mesodouvillina47 sites
- Gypidula42 sites
- Schuchertella41 sites
- Favosites40 sites
- Dalejina38 sites
- Iridistrophia35 sites
- Bivalvia34 sites
- Camarotoechia34 sites
- Fenestella33 sites
- Rhipidomella33 sites
- Athyris32 sites
- Productella31 sites
- Platyceras30 sites
- Actinopteria29 sites
- Gastropoda29 sites
- Meristella29 sites
- Chonetes28 sites
The Paleobiology Database records 508 sites for Cyrtina, and this reads 240 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
2 references- Zur Fossilführung des Ohler Schiefers (Devon: Eifelium) im West-Sauerland (Rheinisches Schiefergebirge) [Fossils of the Ohler Schiefer (Devonian, Eifelian) in the western Sauerland (Eastern Rhenish Massif)]3
- Thamnopora und verwandte ästige tabulate Korallen aus dem Emsium bis Unter-Eifelium von Asturien (Devon; Nord-Spanien) [Thamnopora and related ramose tabulate corals from the Emsian to the Lower Eifelian of Asturias (Devonian; Spain)]1
Each of the 4 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. Each entry links to the Paleobiology Database's own record for the work.
Media and terms
Media content1

Picture of Cyrtina
- Source
- Wikidata/Commons
- Credit
- Dwergenpaartje
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan of Cyrtina 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 itCyrtinidae through timeFormations of the DevonianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Davidson 1858