# Campodus

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Extinct genus of cartilaginous fishes

Campodus Temporal range: Carboniferous, Visean–Bashkirian PreꞒ Ꞓ O S D C P T J K Pg N Teeth of C. agassizianus from Derbyshire, England Scientific classification Kingdom: Animalia Phylum: Chordata Class: Chondrichthyes Subclass: Holocephali Order: †Eugeneodontiformes Clade: †Caseodontoidea Genus: †Campodus Koninck, 1844 Species[1] C. agassizianus Koninck, 1844 C. corrugatus Newberry and Worthen, 1870 C. scitulus Saint John and Worthen, 1875 C. virginianus Saint John and Worthen, 1875

***Campodus*** is an [extinct](/source/Extinct) genus of [eugeneodont](/source/Eugeneodontida) [holocephalans](/source/Holocephalan) from the [Carboniferous](/source/Carboniferous).[1][2] Likely one of the earliest and most [basal](/source/Basal_(phylogenetics)) [caseodontoids](/source/Caseodontoidea), it can be characterized by its broad, ridge-ornamented crushing teeth made of various types of [dentine](/source/Dentin). The type species, ***C. agassizianus***, was originally described in 1844 based on a small number of teeth from the [Namurian](/source/Namurian) of [Belgium](/source/Belgium).[3]

Additional fossils have been referred to the genus. These include Belgian specimens referred by Lohest (1884), fossils from [Missouri](/source/Missouri) referred by Zangerl (1981), and symphyseal tooth-whorls from [Nebraska](/source/Nebraska) and [Kansas](/source/Kansas) referred by Eastman (1902).[4] The tooth whorls were given their own species, *C. variabilis*. They shared some similarity to a massive "*[Agassizodus](/source/Agassizodus)*" jaw apparatus found in Osage, Kansas and described by St. John & Worthen (1875). This has led some authors to the conclusion that *Agassizodus* and *Campodus* were synonyms.[5] However, others note that clearly identifiable *Campodus* teeth have not been found in the same areas from which *Agassizodus* was originally described.[4] Ginter (2018) concluded that Eastman's "*C. variabilis*" and St. John & Worthen (1875)'s "*Agassizodus*" belonged to neither *Campodus* nor *Agassizodus*, and instead represented a new unnamed genus. Ginter additionally referred a specimen from [Derbyshire](/source/Derbyshire), [England](/source/England) to *Campodus agassizianus*.[3]

## References

1. ^ [***a***](#cite_ref-fossilworks_1-0) [***b***](#cite_ref-fossilworks_1-1) ["†*Campodus* de Koninck 1844"](https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=34449). *Paleobiology Database*. Fossilworks. Retrieved 17 December 2021.

1. **[^](#cite_ref-2)** Hay, O.P. (1902). [*Bibliography and Catalogue of the Fossil Vertebrata of North America*](https://www.biodiversitylibrary.org/bibliography/20094#/summary). Bulletin of the United States Geological Survey. Vol. 179.

1. ^ [***a***](#cite_ref-:0_3-0) [***b***](#cite_ref-:0_3-1) Ginter, Michał (2018). ["The dentition of a eugeneodontiform shark from the Lower Pennsylvanian of Derbyshire, UK"](http://www.app.pan.pl/archive/published/app63/app005332018.pdf) (PDF). *Acta Palaeontologica Polonica*. **63** (4): 725–735. [doi](/source/Doi_(identifier)):[10.4202/app.00533.2018](https://doi.org/10.4202%2Fapp.00533.2018).

1. ^ [***a***](#cite_ref-:5_4-0) [***b***](#cite_ref-:5_4-1) Zangerl, R. (1981). *Chondrichthyes I – Paleozoic Elasmobranchii*. Handbook of Paleoichthyology. Stuttgart: Gustav Fischer Verlag. pp. i–iii, 1–115.

1. **[^](#cite_ref-5)** Eaton, Theodore H. (1 October 1962). ["Teeth of Edestid Sharks"](https://www.biodiversitylibrary.org/page/4392898#page/389/mode/1up). *University of Kansas Publications, Museum of Natural History*. **12** (8): 347–362.

v t e Genera of Holocephali Kingdom: Animalia Phylum: Chordata Class: Chondrichthyes Gnathostomata see Gnathostomata Chondrichthyes see Chondrichthyes Holocephali see below↓ Holocephali †Iniopterygiformes "Iniopterygidae" Cervifurca Iniopteryx Papilionichthys Promexyele Rainerichthys Sibyrhynchidae Iniopera Inioxyele Sibyrhynchus †"Orodontiformes" Orodus Leiodontidae Cristatodens Leiodus †Eugeneodontiformes Anisopleurodontis Arpagodus Campodus Campyloprion Paredestus Caseodontidae Caseodus Erikodus Fadenia Ornithoprion Pirodus Romerodus Eugeneodontidae Bobbodus Eugeneodus Gilliodus Edestidae Edestus Lestrodus Syntomodus? Helicampodontidae Helicampodus Hunanohelicoprion Parahelicampodus Sinohelicoprion Helicoprionidae Agassizodus Helicoprion Karpinskiprion Parahelicoprion Sarcoprion Shaktauites Toxoprion †Itapyrodidae Fairchildodus Itapyrodus †Pristodontidae Megactenopetalus Peripristis Pristodus †Petalodontiformes sensu stricto Belantsea Calopodus? Ctenoptychius Davodus? Fissodus Glyphanodus? Peltodus Petalorhynchus Siksika Janassidae Batillodus? Cavusodus Cholodus Cypripediodens Janassa Strigilodus? Obruchevodidae Clavusodens Fissodopsis Netsepoye Obruchevodus Petalodontidae Antliodus Petalodus Polyrhizodus †"Paraselachii" Debeeriidae Debeerius Heteropetalus Gregoriidae Bealbonn Gregorius Srianta †Copodontidae Acmoniodus Copodus Melanodus Synthetodus †Psammodontidae Lagarodus? Psammodus †"Cochliodontiformes" Arcuodus Solenodus? Psephodontidae Kanodus Psephodus Cochliodontidae Cochliodus Deltodus Lophodus? Sandalodus Thoralodus Venustodus? †Chondrenchelyiformes Chondrenchelys Harpagofututor Platyxystrodus? Solenodus? †Listracanthidae? Acanthorhachis Listracanthus †Menaspiformes Deltoptychius Menaspis Traquairius †Incertae sedis Chomatodus Climaxodus Cromhallia Delphyodontos? Desmiodus Gondwanodus Harpacanthus Harpacodus Helodus Jimpohlia Lisgodus Macadens Polysentor Rotuladens Tanaodus Chimaeriformes Echinochimaera? Protochimaera? Similihariotta? †Squalorajoidei Squaloraja Sulcacanthus? †Myriacanthidae Acanthorhina Agkistracanthus Alethodontus Chimaeropsis Halonodon Metopacanthus Myriacanthus Oblidens Recurvacanthus Chimaeroidei (Modern chimaeras) Callorhinchidae †Bathytheristes †Brachymylus Callorhinchus †Darbasodus †Edaphodon †Eomanodon? †Eumylodus †Ganodus? †Ischyodus †Leptomylus †Ptyktoptychion Chimaeridae †Belgorodon †Canadodus Chimaera Hydrolagus Rhinochimaeridae †Amylodon †Elasmodectes? †Elasmodus Harriotta †Lebediodon Neoharriotta †Psaliodus Rhinochimaera †Stolidon Category Commons

Taxon identifiers Campodus Wikidata: Q542226 GBIF: 4825199 IRMNG: 1341726 Open Tree of Life: 4140722 Paleobiology Database: 34449

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