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Description
This cladogram is based on the most recent scientific studies, mixed in with my own opinions. This is not based on any single analysis. Feel free to comment or suggest changes, but be aware that I may reject or modify your suggestions (providing a justification for the change based on the scientific literature will help your case).

Clade Definitions:
Megalichthyiformes - Megalichthys hibberti <- Eusthenopteron foordi

Clade definitions marked with (*) indicate an informal definition created by me.
The above names and/or definitions are not meant to constitute nomenclatural or definitional acts.

Bold indicates clade names
Legends indicate paraphyletic groupings.
Dagger symbols (†) indicate extinct taxa.
Italics indicate formally described species binomials.
Taxa names colored blue indicates that they have multiple possible positions.
Clade names in quotation marks indicates that the clade isn't formally named.
Taxa names colored red indicates that their current position is tentative and subject to change.

References:
- Swartz (2012). "A marine stem-tetrapod from the Devonian of Western North America" .
- Coo et al. (2024). "A new stem-tetrapod fish from the Middle–Late Devonian of central Australia".
- Clement et al. (2021). "A fresh look at Cladarosymblema narrienense, a tetrapodomorph fish (Sarcopterygii: Megalichthyidae) from the Carboniferous of Australia, illuminated via X-ray tomography".
- Mikko's Phylogeny Archive. "Rhizodontida" .
- Downs et al. (2023). "Second species of Eusthenodon (Tristichopteridae, Sarcopterygii) from the Upper Devonian (Famennian) Catskill Formation of Pennsylvania, U.S.A., and a review of global Eusthenodon occurrence".
- Hirasawa et al. (2022). "Morphology of Palaeospondylus shows affinity to tetrapod ancestors".
- Stewart et al. (2022). "A new elpistostegalian from the Late Devonian of the Canadian Arctic" .
- Ahlberg & Clack (2020). "The smallest known Devonian tetrapod shows unexpectedly derived features" .

Description
This cladogram is based on the most recent scientific studies, mixed in with my own opinions. This is not based on any single analysis. Feel free to comment or suggest changes, but be aware that I may reject or modify your suggestions (providing a justification for the change based on the scientific literature will help your case).

Clade Definitions:
Megalichthyiformes - Megalichthys hibberti <- Eusthenopteron foordi

Clade definitions marked with (*) indicate an informal definition created by me.
The above names and/or definitions are not meant to constitute nomenclatural or definitional acts.

Bold indicates clade names
Legends indicate paraphyletic groupings.
Dagger symbols (†) indicate extinct taxa.
Italics indicate formally described species binomials.
Taxa names colored blue indicates that they have multiple possible positions.
Clade names in quotation marks indicates that the clade isn't formally named.
Taxa names colored red indicates that their current position is tentative and subject to change.

References:
- Swartz (2012). "A marine stem-tetrapod from the Devonian of Western North America" .
- Coo et al. (2024). "A new stem-tetrapod fish from the Middle–Late Devonian of central Australia".
- Clement et al. (2021). "A fresh look at Cladarosymblema narrienense, a tetrapodomorph fish (Sarcopterygii: Megalichthyidae) from the Carboniferous of Australia, illuminated via X-ray tomography".
- Mikko's Phylogeny Archive. "Rhizodontida" .
- Downs et al. (2023). "Second species of Eusthenodon (Tristichopteridae, Sarcopterygii) from the Upper Devonian (Famennian) Catskill Formation of Pennsylvania, U.S.A., and a review of global Eusthenodon occurrence".
- Hirasawa et al. (2022). "Morphology of Palaeospondylus shows affinity to tetrapod ancestors".
- Stewart et al. (2022). "A new elpistostegalian from the Late Devonian of the Canadian Arctic" .
- Ahlberg & Clack (2020). "The smallest known Devonian tetrapod shows unexpectedly derived features" .