Lamnoidea

Lamnoidea; Temporal range:
	Lamna nasus (top) and Otodus megalodon (bottom)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Order:	Lamniformes
Superfamily:	Lamnoidea; Bonaparte, 1835[1]
Families
	Lamnidae; †Otodontidae;

Lamnoidea is a proposed superfamily of mackerel sharks that includes the families Lamnidae and Otodontidae. A sister group relationship between lamnids and otodontids is supported by synapomorphies including regional endothermy, tooth morphology, and rostral cartilage morphology.[2][3][4]

Phylogeny

Below is a cladogram showing the position of Lamnoidea within Lamniformes. The topology of extant families is based on Vella & Vella (2020) and the placements of Cretoxyrhinidae and Otodontidae are based on Ferrón (2017), Cooper (2020), and Greenfield (2022).[2][3][4][5]

	Pseudocarchariidae

	Megachasmidae

Carchariidae

Cetorhinidae

†Cretoxyrhinidae?

Lamnoidea

	†Otodontidae

	Lamnidae

References

Bonaparte, C.L. (1835). "Prodromus systematis ichthyologiae". Nuovi Annali delle Scienze Naturali. 2 (4): 181–196, 272–277.
Ferrón, H.G. (2017). "Regional endothermy as a trigger for gigantism in some extinct macropredatory sharks". PLOS ONE. 12 (9): e0185185. Bibcode:2017PLoSO..1285185F. doi:10.1371/journal.pone.0185185. PMC 5609766. PMID 28938002.
Cooper, J.A. (2020). "Scaling a giant" (PDF). Geoscientist. 30 (10): 10–15. doi:10.1144/geosci2020-115. S2CID 242895754.
Greenfield, T. (2022). "List of skeletal material from megatooth sharks (Lamniformes, Otodontidae)" (PDF). Paleoichthys. 4: 1–9.
Vella, N.; Vella, A. (2020). "The complete mitogenome of the Critically Endangered smalltooth sand tiger shark, Odontaspis ferox (Lamniformes: Odontaspididae)". Mitochondrial DNA Part B. 5 (3): 3301–3304. doi:10.1080/23802359.2020.1814886. PMC 7782878. PMID 33458146.

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[Bonaparte_1835-1] Bonaparte, C.L. (1835). "Prodromus systematis ichthyologiae". Nuovi Annali delle Scienze Naturali. 2 (4): 181–196, 272–277.

[Ferrón_2017-2] Ferrón, H.G. (2017). "Regional endothermy as a trigger for gigantism in some extinct macropredatory sharks". PLOS ONE. 12 (9): e0185185. Bibcode:2017PLoSO..1285185F. doi:10.1371/journal.pone.0185185. PMC 5609766. PMID 28938002.

[Cooper_2020-3] Cooper, J.A. (2020). "Scaling a giant" (PDF). Geoscientist. 30 (10): 10–15. doi:10.1144/geosci2020-115. S2CID 242895754.

[Greenfield_2022-4] Greenfield, T. (2022). "List of skeletal material from megatooth sharks (Lamniformes, Otodontidae)" (PDF). Paleoichthys. 4: 1–9.

[Vella_&_Vella_2020-5] Vella, N.; Vella, A. (2020). "The complete mitogenome of the Critically Endangered smalltooth sand tiger shark, Odontaspis ferox (Lamniformes: Odontaspididae)". Mitochondrial DNA Part B. 5 (3): 3301–3304. doi:10.1080/23802359.2020.1814886. PMC 7782878. PMID 33458146.