Megachasma applegatei
Shimada, Welton & Long, 2014
Classification: Elasmobranchii Lamniformes Megachasmidae
Reference of the original description
A new fossil megamouth shark (Lamniformes, Megachasmidae) from the Oligocene-Miocene of the western United States. Journal of Vertebrate Paleontology, 34(2), 281–290
A new fossil megamouth shark (Lamniformes, Megachasmidae) from the Oligocene-Miocene of the western United States. Journal of Vertebrate Paleontology, 34(2), 281–290
Synonyms / new combinations and misspellings
Megachasma cf. applegatei
Megachasma cf. applegatei
Types
Megachasma applegatei
Megachasma applegatei
Description:
Citation: Megachasma applegatei Shimada, Welton & Long, 2014: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 12/2024
Please send your images of "Megachasma applegatei" to info@shark-references.com
Megachasma applegatei Shimada, Welton & Long, 2014, Late Oligocene to Early Miocene, Jewett Sand, Pyramid Hill, Kern Country, California, USA, Collection and © Adam Anderson
Megachasma applegatei Shimada, Welton & Long, 2014, Late Oligocene to Early Miocene, Jewett Sand, Pyramid Hill, Kern Country, California, USA, Collection and © Adam Anderson
Distribution Strategraphy
Type Locality and Horizon—LACM locality 1626, Pyramid Hill Sand Quarry in southeastern San Joaquin Valley detailed locality information is on file at LACM).
Type Locality and Horizon—LACM locality 1626, Pyramid Hill Sand Quarry in southeastern San Joaquin Valley detailed locality information is on file at LACM).
Description
Diagnose after SHIMADA, WELTON & LONG, 2014 [20505]: Megachasmid differing from all known species of Megachasma by having teeth with apicobasally shorter crowns that have strong lingual cusp inclination and commonly with one pair of lateral cusplets, and with massive bilobate roots with robust lingual protuberance.
Diagnose after SHIMADA, WELTON & LONG, 2014 [20505]: Megachasmid differing from all known species of Megachasma by having teeth with apicobasally shorter crowns that have strong lingual cusp inclination and commonly with one pair of lateral cusplets, and with massive bilobate roots with robust lingual protuberance.
Remarks
shark-references Species-ID=13970;
shark-references Species-ID=13970;
References
A Review of the Paleobiology of Some Neogene Sharks and the Fossil Records of Extant Shark Species. Diversity, 16(3), Article 147
DOI: 10.3390/d16030147
The dentition of the extinct megamouth shark, Megachasma applegatei (Lamniformes: Megachasmidae), from southern California, USA, based on geometric morphometrics. PaleoBios, 40(1), Article P940160139
DOI: 10.5070/P940160139
Feeding ecology has shaped the evolution of modern sharks. Current Biology, 31(23), 5138–5148
DOI: 10.1016/j.cub.2021.09.028
The early Miocene elasmobranch assemblage from Zamaca (Chilcatay Formation, Peru). Journal of South American Earth Sciences, 91, 352–371
DOI: 10.1016/j.jsames.2018.08.004
Climate cooling and clade competition likely drove the decline of lamniform sharks. Proceedings of the National Academy of Sciences of the United States of America, 116(41), 20584–20590
DOI: 10.1073/pnas.1902693116
A new fossil megamouth shark (Lamniformes, Megachasmidae) from the Oligocene-Miocene of the western United States. Journal of Vertebrate Paleontology, 34(2), 281–290
DOI: 10.1080/02724634.2013.803975
A Review of the Paleobiology of Some Neogene Sharks and the Fossil Records of Extant Shark Species. Diversity, 16(3), Article 147
DOI: 10.3390/d16030147
The dentition of the extinct megamouth shark, Megachasma applegatei (Lamniformes: Megachasmidae), from southern California, USA, based on geometric morphometrics. PaleoBios, 40(1), Article P940160139
DOI: 10.5070/P940160139
Feeding ecology has shaped the evolution of modern sharks. Current Biology, 31(23), 5138–5148
DOI: 10.1016/j.cub.2021.09.028
The early Miocene elasmobranch assemblage from Zamaca (Chilcatay Formation, Peru). Journal of South American Earth Sciences, 91, 352–371
DOI: 10.1016/j.jsames.2018.08.004
Climate cooling and clade competition likely drove the decline of lamniform sharks. Proceedings of the National Academy of Sciences of the United States of America, 116(41), 20584–20590
DOI: 10.1073/pnas.1902693116
A new fossil megamouth shark (Lamniformes, Megachasmidae) from the Oligocene-Miocene of the western United States. Journal of Vertebrate Paleontology, 34(2), 281–290
DOI: 10.1080/02724634.2013.803975
