Lamnoidea

{{Short description|Superfamily of sharks}}

{{Automatic taxobox

| fossil_range = {{fossil range|101.72|0|late Albian-present}}

| image = Lamna nasus.jpg

| image2 = Megalodon restoration.png

| image2_caption = Lamna nasus (top) and Otodus megalodon (bottom)

| taxon = Lamnoidea

| authority = Bonaparte, 1835{{cite journal |last=Bonaparte |first=C.L. |date=1835 |title=Prodromus systematis ichthyologiae |journal=Nuovi Annali delle Scienze Naturali |volume=2 |issue=4 |pages=181-196,272-277 |url=https://www.biodiversitylibrary.org/item/36613#page/199/mode/1up}}

| subdivision_ranks = Families

| subdivision =

• Lamnidae
• †Otodontidae

}}

Lamnoidea is a proposed superfamily of mackerel sharks, including families Lamnidae and Otodontidae. Ssynapomorphies, including regional endothermy, tooth morphology, and rostral cartilage morphology, support a sister group relationship between lamnids and otodontids.{{cite journal |last=Ferrón |first=H.G. |date=2017 |title=Regional endothermy as a trigger for gigantism in some extinct macropredatory sharks |journal=PLOS ONE |volume=12 |issue=9 |page= e0185185 |doi=10.1371/journal.pone.0185185 |pmid=28938002 |pmc=5609766 |bibcode=2017PLoSO..1285185F |doi-access=free}}{{cite journal |last=Cooper |first=J.A. |date=2020 |title=Scaling a giant |journal=Geoscientist |volume=30 |issue=10 |pages=10–15 |doi=10.1144/geosci2020-115 |s2cid=242895754 |url=https://geoscientist.online/wp-content/uploads/2021/02/Geo_NOV2020_WR.pdf }}{{cite journal |last=Greenfield |first=T. |date=2022 |title=List of skeletal material from megatooth sharks (Lamniformes, Otodontidae) |journal=Paleoichthys |volume=4 |pages=1–9 |url=https://usercontent.one/wp/pecescriollos.de/wp-content/uploads/2022/06/PI-04-Greenfield-2022-List-of-skeletal-material-from-megatooth-sharks.pdf}}