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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).

Notes:
- Arctocephalus includes Hydrarctos lomasiensis.
- Allodesmus sinanoensis includes A megallos.
- Allodesmus kernensis includes A. kelloggi and A. gracilis.
- Phocanella pumila includes P. minor.

Bold indicates clade names
Italics indicate formally described species binomials.
Taxa names colored red indicates that their current position is tentative and subject to change.

References:
- Faurby, Werdelin, & Antonelli (2019) "Dispersal ability predicts evolutionary success among mammalian carnivores" .
- Park et al. (2024). "Charting the Course of Pinniped Evolution: insights from molecular phylogeny and fossil record integration"
- Boessenecker et al. (2024). "Tusked walruses (Carnivora: Odobenidae) from the Miocene–Pliocene Purisima Formation of Santa Cruz, California (U.S.A.): a new species of the toothless walrus Valenictus and the oldest records of Odobeninae and Odobenini".
- Dewaele & de Muizon (2024). "A new monachine seal (Monachinae, Phocidae, Mammalia) from the Miocene of Cerro La Bruja (Ica department, Peru)" .

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).

Notes:
- Arctocephalus includes Hydrarctos lomasiensis.
- Allodesmus sinanoensis includes A megallos.
- Allodesmus kernensis includes A. kelloggi and A. gracilis.
- Phocanella pumila includes P. minor.

Bold indicates clade names
Italics indicate formally described species binomials.
Taxa names colored red indicates that their current position is tentative and subject to change.

References:
- Faurby, Werdelin, & Antonelli (2019) "Dispersal ability predicts evolutionary success among mammalian carnivores" .
- Park et al. (2024). "Charting the Course of Pinniped Evolution: insights from molecular phylogeny and fossil record integration"
- Boessenecker et al. (2024). "Tusked walruses (Carnivora: Odobenidae) from the Miocene–Pliocene Purisima Formation of Santa Cruz, California (U.S.A.): a new species of the toothless walrus Valenictus and the oldest records of Odobeninae and Odobenini".
- Dewaele & de Muizon (2024). "A new monachine seal (Monachinae, Phocidae, Mammalia) from the Miocene of Cerro La Bruja (Ica department, Peru)" .