Megaselachus

{{short description|Extinct shark from the Miocene}}

{{speciesbox

| fossil_range = {{fossil range|Miocene}}

| genus = Megaselachus

| parent_authority = Glyckman, 1964

| species = subauriculatus

| authority = (Agassiz, 1839)

| subdivision_ranks = Other species

| subdivision =

• {{extinct}}"M." crassus? (Costa, 1865 Non Neugeboren, 1850)
• {{extinct}}"M." polygyrus? (Morton, 1835)

}}

Megaselachus is a possibly dubious extinct genus of otodontid shark. In the past, this particular genus has been used to house other otodontids, such as the famous megalodon. It is sometimes considered a subgenus of Otodus, or merged with other related genera such as Carcharocles.{{Cite journal |last=Shimada |first=Kenshu |last2=Chandler |first2=Richard E. |last3=Lam |first3=Otto Lok Tao |last4=Tanaka |first4=Takeshi |last5=Ward |first5=David J. |date=2017-07-04 |title=A new elusive otodontid shark (Lamniformes: Otodontidae) from the lower Miocene, and comments on the taxonomy of otodontid genera, including the ‘megatoothed’ clade |url=https://www.tandfonline.com/doi/full/10.1080/08912963.2016.1236795 |journal=Historical Biology |language=en |volume=29 |issue=5 |pages=704–714 |doi=10.1080/08912963.2016.1236795 |issn=0891-2963|url-access=subscription }} The genus lived during the Miocene. Only a single species can be confidentially placed in the genus, Megaselachus subauriculatus.