Lamnoidea

Lamnoidea Temporal range: late Albian-present PreꞒ Ꞓ O S D C P T J K Pg N
Lamna nasus (top) and Otodus megalodon (bottom)
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Elasmobranchii
Division:	Selachii
Order:	Lamniformes
Superfamily:	Lamnoidea Bonaparte, 1835 [1]
Families
Lamnidae †Otodontidae

Lamnoidea is a proposed superfamily of mackerel sharks, including families Lamnidae and Otodontidae. Synapomorphies, including regional endothermy, tooth morphology, and rostral cartilage morphology, support a sister group relationship between lamnids and otodontids. ^{[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]}

Lamniformes	Mitsukurinidae Alopiidae Odontaspididae Pseudocarchariidae Megachasmidae Carchariidae Cetorhinidae †Cretoxyrhinidae? Lamnoidea †Otodontidae Lamnidae

References

1. Bonaparte, C.L. (1835). "Prodromus systematis ichthyologiae". Nuovi Annali delle Scienze Naturali. 2 (4): 181–196, 272–277.
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.
3. Cooper, J.A. (2020). "Scaling a giant" (PDF). Geoscientist. 30 (10): 10–15. doi:10.1144/geosci2020-115. S2CID   242895754.
4. Greenfield, T. (2022). "List of skeletal material from megatooth sharks (Lamniformes, Otodontidae)" (PDF). Paleoichthys. 4: 1–9.
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.