Girtyella

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
- GirtyellinaePBDB
- Diet
- suspension feederPBDB, for Terebratulida
- Life habit
- low-level epifaunalPBDB, for Terebratulida
- Motility
- stationaryPBDB, for Terebratulida
- Vision
- blindPBDB, for Rhynchonellata
- Environment
- marinePBDB, for Lophophorata
Time the record covers
At least 121 million years on record.
The record covers at least 375.2 Mya to 254.14 Mya. No occurrence read is dated outside 379 Mya to 251.902 Mya.
90 occurrences of Girtyella 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
90 occurrences- Devonian3%
- Carboniferous93%
- Permian3%
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
35 formations
- Salem Limestone Formation13
- Glen Dean Limestone Formation11
- Heath Formation7
- Paradise Formation6
- Waterhouses Limestone Formation4
- Mount Head Formation · Rundle Group4
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The named rock units Girtyella has been recovered from, largest first. Drawn where the rock is now, not where it formed. 11 further formations hold fewer occurrences each and are not listed. 6 occurrences have no formation on record, which is common for older literature.
Girtyella and its relatives
CarboniferousWhere Girtyella and its relatives were recorded in the Carboniferous.
Found in the same rock
725 taxa- Eumetria35 sites
- Composita trinuclea29 sites
- Spirifer29 sites
- Composita24 sites
- Fenestella21 sites
- Fistulipora20 sites
- Tabulipora20 sites
- Cleiothyridina sublamellosa18 sites
- Pentremites18 sites
- Dielasma16 sites
- Polypora16 sites
- Anthracospirifer leidyi15 sites
- Cystodictya15 sites
- Cleiothyridina hirsuta14 sites
- Hapsiphyllum14 sites
- Punctospirifer transversus14 sites
- Reticulariina14 sites
- Archimedes13 sites
- Camarotoechia13 sites
- Composita subquadrata13 sites
- Aviculopecten12 sites
- Cleiothyridina12 sites
- Hemitrypa12 sites
- Platycrinites12 sites
The Paleobiology Database records 85 sites for Girtyella, 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
35 references- Facies Faunas of the Salem Limestone (Mississippian) in Southern Indiana and Central Kentucky11
- Fauna of Glen Dean Limestone (Chester) in Indiana and Northern Kentucky11
- Carboniferous formations and faunas of central Montana7
- The Paradise Formation and its fauna6
- A Lower Carboniferous brachiopod fauna from the Manifold Valley, Staffordshire4
- Upper Paleozoic sections at Highwood Pass, Alberta4
- Relation of Biofacies to Lithofacies in interpreting Depositional Environments in the Pitkin Limestone (Mississippian) in Norhteastern Oklahoma (Part I)3
- Geology of the Bristol and Wallace quadrangles, Virginia3
- Mississippian brachiopods from the Chappel Limestone of central Texas3
- Invertebrate Fauna of the Golconda Formation (Middle Chester) of Indiana, Western Kentucky, and Southern Illinois3
- Mississippian succession in Mount Head area, Alberta3
- Geology and mineral deposits of southeastern Alaska3
Each of the 90 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. 23 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 Girtyella
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Girtyella 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 itGirtyellinae through timeFormations of the CarboniferousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Weller 1911