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1. Ontogenetic growth pattern of the extinct megatooth shark Otodus megalodon —implications for its reproductive biology, development, and life expectancy

   https://doi.org/10.1080/08912963.2020.1861608  

   Shimada, Kenshu; Bonnan, Matthew F.; Becker, Martin A.; Griffiths, Michael L. (January 2021, Historical Biology)

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2. Revisiting body size trends and nursery areas of the Neogene megatooth shark, Otodus megalodon (Lamniformes: Otodontidae), reveals Bergmann’s rule possibly enhanced its gigantism in cooler waters

   https://doi.org/10.1080/08912963.2022.2032024  

   Shimada, Kenshu; Maisch, Harry M.; Perez, Victor J.; Becker, Martin A.; Griffiths, Michael L. (March 2022, Historical Biology)
3. Body, jaw, and dentition lengths of macrophagous lamniform sharks, and body size evolution in Lamniformes with special reference to ‘off-the-scale’ gigantism of the megatooth shark, Otodus megalodon

   https://doi.org/10.1080/08912963.2020.1812598  

   Shimada, Kenshu; Becker, Martin A.; Griffiths, Michael L. (October 2020, Historical Biology)

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4. Trophic position of Otodus megalodon and great white sharks through time revealed by zinc isotopes

   https://doi.org/10.1038/s41467-022-30528-9  

   McCormack, Jeremy; Griffiths, Michael L.; Kim, Sora L.; Shimada, Kenshu; Karnes, Molly; Maisch, Harry; Pederzani, Sarah; Bourgon, Nicolas; Jaouen, Klervia; Becker, Martin A.; et al (December 2022, Nature Communications)

   Abstract Diet is a crucial trait of an animal’s lifestyle and ecology. The trophic level of an organism indicates its functional position within an ecosystem and holds significance for its ecology and evolution. Here, we demonstrate the use of zinc isotopes (δ 66 Zn) to geochemically assess the trophic level in diverse extant and extinct sharks, including the Neogene megatooth shark ( Otodus megalodon ) and the great white shark ( Carcharodon carcharias ). We reveal that dietary δ 66 Zn signatures are preserved in fossil shark tooth enameloid over deep geologic time and are robust recorders of each species’ trophic level. We observe significant δ 66 Zn differences among the Otodus and Carcharodon populations implying dietary shifts throughout the Neogene in both genera. Notably, Early Pliocene sympatric C. carcharias and O. megalodon appear to have occupied a similar mean trophic level, a finding that may hold clues to the extinction of the gigantic Neogene megatooth shark. 

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5. Sexual reproductive biology of twelve species of rotifers in the genera: Brachionus , Cephalodella , Collotheca , Epiphanes , Filinia , Lecane, and Trichocerca

   https://doi.org/10.1080/10236244.2017.1344554  

   Alvarado-Flores, Jesús; Guerrero-Jiménez, Gerardo; Silva-Briano, Marcelo; Adabache-Ortíz, Araceli; Delgado-Saucedo, Joane Jessica; Pérez-Yañez, Daniela; Marín-Chan, Ailem Guadalupe; DeGante-Flores, Mariana; Arroyo-Castro, Jovana Lizeth; Kordbacheh, Azar; et al (March 2017, Marine and Freshwater Behaviour and Physiology)

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