Derbyia crassa

Yale Peabody Museum · CC0 · via GBIF. 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
- DerbyiaPBDB
- Diet
- suspension feederPBDB, for Brachiopoda
- Life habit
- low-level epifaunalPBDB, for Brachiopoda
- Motility
- stationary, attachedPBDB, for Brachiopoda
- Vision
- blindPBDB, for Strophomenata
- Environment
- marinePBDB, for Lophophorata
Time the record covers
At least 41 million years on record.
The record covers at least 318.6 Mya to 276.8 Mya. No occurrence read is dated outside 323.4 Mya to 264.9 Mya.
164 occurrences of Derbyia crassa 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
164 occurrences- Carboniferous69%
- Permian31%
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
36 formations
- Wood Siding Formation · Wabaunsee Group21
- Cherokee Shale Formation20
- Krebs Formation · Cherokee Group15
- Foraker Limestone Formation · Council Grove Group13
- Cabaniss Formation · Cherokee Group12
- Conemaugh Formation10
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The named rock units Derbyia crassa has been recovered from, largest first. Drawn where the rock is now, not where it formed. 12 further formations hold fewer occurrences each and are not listed. 1 occurrence has no formation on record, which is common for older literature.
Derbyia crassa and its relatives
CarboniferousWhere Derbyia crassa and its relatives were recorded in the Carboniferous.
Found in the same rock
692 taxa- Composita subtilita69 sites
- Neochonetes granulifer57 sites
- Parajuresania nebrascensis52 sites
- Neospirifer dunbari46 sites
- Punctospirifer kentuckensis46 sites
- Crinoidea45 sites
- Desmoinesia muricatina45 sites
- Crurithyris planoconvexa44 sites
- Linoproductus prattenianus42 sites
- Hystriculina wabashensis35 sites
- Hustedia mormoni31 sites
- Reticulatia huecoensis30 sites
- Trepostomata27 sites
- Mesolobus mesolobus lioderma26 sites
- Condrathyris perplexa25 sites
- Neospirifer cameratus25 sites
- Echinoidea23 sites
- Linoproductus22 sites
- Lophophyllidium profundum21 sites
- Cymatospira montfortianus20 sites
- Fusulinidae19 sites
- Orbiculoidea missouriensis19 sites
- Desmoinesia nana18 sites
- Nuculopsis girtyi18 sites
The Paleobiology Database records 162 sites for Derbyia crassa, 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
24 references- Stratigraphy and Paleontology of the Uppermost Pennsylvanian and Lowermost Permian Rocks in Kansas50
- Desmoinesian Brachiopoda and Mollusca from southwest Missouri28
- Pennsylvanian Invertebrate Faunas of Southeastern Kansas23
- Stratigraphic and Paleontologic Studies of the Pennsylvanian and Permian Rocks in North-Central Texas10
- The Portersville Member of the Conemaugh Formation in Muskingum County, Ohio8
- A preliminary list of the fauna of the Allegheny and Conemaugh series in western Pennsylvania6
- Pottsville fauna of Ohio5
- The fossils of the Conemaugh Formation of Ohio5
- Coal Measures faunal studies. I.4
- Brachiopods of the suborder Strophomenidina from the Shumway Cyclothem, Mattoon Formation, Virgilian of Illinois.3
- Lateral facies and paleoecology of Permian Elephant Canyon Formation, Grand County, Utah3
- Orthotetoids from the Lower Permian (Sakmarian) of the Nagaiwa-Sakamotozawa area, South Kitakami Belt, northeast Japan2
Each of the 164 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. 12 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 content2

Picture of Derbyia crassa
- Source
- GBIF
- Credit
- Yale Peabody Museum
- Licence
- CC0
- Commercial use
- the licence allows it
3D model
- Source
- Sketchfab
- Credit
- Shellie Luallin
- Licence
- CC Attribution
- Commercial use
- cannot be read from the licence given — check the record
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itDerbyia through timeFormations of the CarboniferousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Meek and Hayden 1858)