[dinosaur] Size of "Megalodon" (free pdf)

Ben Creisler
[email protected]

OK,  a non-dino item, but "Megalodon" gets so much attention...and the pdf
is free.


Kenshu Shimada (2019)
The size of the megatooth shark, Otodus megalodon (Lamniformes:
Otodontidae), revisited.
Historical Biology (advance online publication)
DOI: 10.1080/08912963.2019.1666840
https://urldefense.proofpoint.com/v2/url?u=https-3A__www.tandfonline.com_doi_full_10.1080_08912963.2019.1666840&d=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=EEzA7fnJCLXoJGOBalZM4b3_9gezjS02TOlKCEU7D_U&s=ooMs9pNUzifPv_LAIleg_fsu6sdw4jFS39bn6V7ZY0I&e= 

Free pdf:
https://urldefense.proofpoint.com/v2/url?u=https-3A__www.tandfonline.com_doi_pdf_10.1080_08912963.2019.1666840-3FneedAccess-3Dtrue&d=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=EEzA7fnJCLXoJGOBalZM4b3_9gezjS02TOlKCEU7D_U&s=82Yvbb0HAeS7P8lG1PzYX5u_ByxEHCootdzTDCj7Cd8&e= 


Otodus megalodon (Lamniformes: Otodontidae) is a gigantic late Neogene
shark that lived nearly worldwide in tropical-temperate regions. Its
gigantic teeth have captivated imaginations of the scientific community and
general public alike, where the most commonly cited maximum size range of
O. megalodon in scientific literature is 18–20 m in total length (TL). In
this study, I reexamined the ontogenetic development of teeth and the
quantitative relationships between TL and the crown height of anterior
teeth in the extant white shark, Carcharodon carcharias, with an ultimate
goal to clarify the current state of the scientific understanding of the
body size of O. megalodon. My study suggests that the use of upper anterior
teeth is much preferred over lower anterior teeth when estimating TL. This
study combined with previous studies suggests that the presently verifiable
maximum TL estimates of O. megalodon (i.e. scientifically justifiable
account based on museum specimens) are 14.2‒15.3 m TL, where individuals of
O. megalodon exceeding 15 m TL must have been exceptionally rare.
Nevertheless, O. megalodon can still be regarded as one of the largest
carnivores, if not superpredators, that have ever lived on Earth.

News release:

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