Triodus is an extinct genus of xenacanthiform cartilaginous fish that lived from the Carboniferous to the Permian. In 2017, a new species Triodus richterae was described from the Rio do Rasto Formation of Brazil.[1]
References
- ^ Victor E. Pauliv; Agustín G. Martinelli; Heitor Francischini; Paula Dentzien-Dias; Marina B. Soares; Cesar L. Schultz; Ana M. Ribeiro (2017). "The first Western Gondwanan species of Triodus Jordan 1849: A new Xenacanthiformes (Chondrichthyes) from the late Paleozoic of Southern Brazil". Journal of South American Earth Sciences. 80: 482–493. Bibcode:2017JSAES..80..482P. doi:10.1016/j.jsames.2017.09.007.
Further reading
- The Rise of Fishes: 500 Million Years of Evolution by John A. Long
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- †Cassidiceps
- †Euthacanthus
- †Latviacanthus
- †Ramirosuarezia?
| | †Sinacanthidae |
- Hunanacanthus
- Neosinacanthus
- Sinacanthus
- Tarimacanthus
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| †Ischnacanthiformes |
- Acanthospina
- Campylodus
- Granulacanthus
- Machaeracanthus?
- Onchus
- Serradentus
| | Acritolepidae | |
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| Ischnacanthidae |
- Arcticacanthus
- Arenaceacanthus
- Atopacanthus
- Bracteatacanthus
- Cacheacanthus
- Erymnacanthus
- Euryacanthus
- Gomphonchus
- Grenfellacanthus
- Ischnacanthus
- Marsdenius?
- Persacanthus
- Plectrodus
- Rockycampacanthus
- Rohonilepis
- Taemasacanthus
- Tricuspicanthus
- Xylacanthus
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| Podoliacanthidae | |
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| Poracanthodidae |
- Gomphonchoporus
- Machaeraporus
- Obruchevacanthus?
- Poracanthodes
- Radioporacanthodes
- Taimyrolepis
- Trundlelepis
- Zemlyacanthus
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| †Diplacanthiformes | |
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| †Acanthodiformes | |
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"Climatiiformes" and related taxa | |
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"Conventionally defined chondrichthyans" | |
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"Conventionally defined chondrichthyans" |
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"Conventionally defined chondrichthyans" | |
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| †Altholepidiformes? | |
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| †Elegestolepidida? | |
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| †Mongolepidida? | | | Mongolepididae |
- Mongolepis
- Rongolepis
- Sodolepis
- Taklamakanolepis
- Teslepis
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| Shiqianolepidae |
- Chenolepis
- Shiqianolepis
- Tielikewatielepis
- Xiaohaizilepis
- Xinjiangichthys
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| †Tchunacanthidae |
- Fecundosquama
- Lenacanthus
- Tchunacanthus
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| †Vesperaliidae |
- Acanthacanthus
- Vesperalia
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| Others |
- †Canyonlepis?
- †Frigorilepis?
- †Funicristata
- †Gualepis
- †Ivanelepis
- †Jolepis
- †Karksilepis
- †Lunalepis
- †Nobilesquama
- †Nostolepis
- †Nostovicina
- †Ohiolepis
- †Seretolepis
- †Tuvalepis
- †Wellingtonella?
- †Yuanolepis
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