Cyrtia

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
- CyrtiinaePBDB
- Diet
- suspension feederPBDB, for Spiriferida
- Life habit
- epifaunalPBDB, for Spiriferida
- Motility
- stationaryPBDB, for Spiriferida
- Vision
- blindPBDB, for Rhynchonellata
- Environment
- marinePBDB, for Lophophorata
Time the record covers
At least 187 million years on record.
The record covers at least 439.4 Mya to 251.902 Mya. No occurrence read is dated outside 443.1 Mya to 201.4 Mya.
191 occurrences of Cyrtia on record, most of them in the Silurian. 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
191 occurrences- Silurian98%
- Devonian1%
- Early Triassicunder 1%
- Middle Triassicunder 1%
- Late Triassicunder 1%
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
68 formations
- Motol Formation19
- Riga Formation11
- Kopanina Formation11
- Scotch Grove Formation10
- Paprieniai Formation8
- Racine Formation7
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The named rock units Cyrtia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 44 further formations hold fewer occurrences each and are not listed. 20 occurrences have no formation on record, which is common for older literature.
Cyrtia and its relatives
SilurianWhere Cyrtia and its relatives were recorded in the Silurian.
Found in the same rock
1,400 taxa- Atrypa reticularis70 sites
- Isorthis61 sites
- Atrypa50 sites
- Eospirifer radiatus50 sites
- Dicoelosia biloba41 sites
- Resserella canalis36 sites
- Dalejina34 sites
- Leptaena rhomboidalis34 sites
- Resserella34 sites
- Clorinda33 sites
- Eospirifer33 sites
- Dalejina hybrida32 sites
- Leptaena32 sites
- Fardenia (Coolinia)30 sites
- Nucleospira30 sites
- Howellella29 sites
- Howellella elegans29 sites
- Bryozoa28 sites
- Meristina28 sites
- Craniops27 sites
- Calymene26 sites
- Jonesea grayi26 sites
- Dicoelosia25 sites
- Dolerorthis25 sites
The Paleobiology Database records 165 sites for Cyrtia, 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
59 references- Silurian and Lochkovian communities in the Prague basin (Barrandian area, Czech Republic)17
- Silurian field excursions: Prague Basin (Barrandian), Bohemia13
- A review of Silurian brachiopods from Gotland9
- Brakhiopody Pentamerida i Spiriferida silura Estonii - Siluran Brachiopods Pentamerida and Spiriferida of Estonia9
- The Clinton of Western and Central New York9
- Brachiopod communities of the Lithuanian Silurian8
- Caradocian-Gedinnian echinoderm associations of Central and Eastern North America7
- Silurian Brachiopod communities in the section of the Pilviškiai - 141 borehole7
- Brachiopod and Conodont Distribution at the Wenlock - Ludlow boundary of Lithuania7
- Brachiopod assemblages from the Much Wenlock Limestone Formation of England and Wales6
- Wenlockian fossil communities in New York State and adjacent areas: Paleontology and Paleoecology5
- Wenlockian (Silurian) brachiopods of the Cape Phillips Formation, Baillie Hamilton Island, Arctic Canada: part I5
Each of the 191 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. 47 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 Cyrtia
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Cyrtia was found in Sketchfab.
Smithsonian Open Access and MorphoSource were 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 itCyrtiinae through timeFormations of the SilurianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Dalman 1828