Clydagnathus
Clydagnathus is a genus of conodonts in the family Cavusgnathidae. Species are known from the Carboniferous of India and the Devonian of Morocco.

No machine-readable author provided. Haplochromis assumed (based on copyright claims). · Public Domain · 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
- PolygnathaceaPBDB
- Diet
- carnivorePBDB, for Conodonta
- Life habit
- nektonicPBDB, for Conodonta
- Motility
- actively mobilePBDB, for Conodonta
- Vision
- well-developedPBDB, for Conodonta
Time the record covers
At most 26 million years on record.
Every occurrence read is dated to somewhere between 372.15 Mya and 346.7 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
8 occurrences of Clydagnathus 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
8 occurrences- Devonian75%
- Carboniferous25%
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
3 formations
- Parting Formation Formation · Chaffee Group Group3
- Pinyon Peak Limestone Formation2
- Hutk Formation1
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The named rock units Clydagnathus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.
Clydagnathus and its relatives
DevonianWhere Clydagnathus and its relatives were recorded in the Devonian.
Found in the same rock
35 taxa- Bispathodus3 sites
- Apatognathus varians2 sites
- Bispathodus stabilis2 sites
- Branmehla2 sites
- Mehlina2 sites
- Pelekysgnathus2 sites
- Polygnathus nodocostatus2 sites
- Polygnathus semicostatus2 sites
- Amabilicrinus bahramensis1 site
- Amabilicrinus iranensis1 site
- Angulodus1 site
- Atelestocrinus1 site
- Bispathodus aculeatus1 site
- Blothrocrinus1 site
- Camerata1 site
- Derorhethocrinus elongatus1 site
- Gelasinocrinus revimentus1 site
- Gnathodus1 site
- Hibbardella1 site
- Hindeodella subtilis1 site
- Hippocardia kermani1 site
- Hutkocrinus kermanensis1 site
- Icriodus1 site
- Idioprioniodus1 site
The Paleobiology Database records 8 sites for Clydagnathus, 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
4 references- Late Devonian icriodontid biofacies models and alternate shallow-water conodont zonation5
- Die globalen Annulata-Events und die Dasberg-Krise (Famennium, Oberdevon) in Europa und Nord-Afrika - hochauflösende Conodonten-Stratigraphie, Karbonat-Mikrofazies, Paläoökologie und Paläodiversität1
- A cladid-dominated Early Mississippian crinoid and conodont fauna from Kerman Province, Iran and revision of the glossocrinids and rhenocrinids1
- Early Lower Carboniferous Conodonts from the Syringothyris Limestone of Kashmir1
Each of the 8 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. 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 Clydagnathus
- Source
- Wikidata/Commons
- Credit
- No machine-readable author provided. Haplochromis assumed (based on copyright claims).
- Licence
- Public Domain
- Commercial use
- the licence allows it
No 3D scan of Clydagnathus 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
- 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 itPolygnathacea through timeFormations of the DevonianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0.