Fossil sea catfish (Siluriformes; Ariidae) otoliths and in-skull otoliths from the Neogene of the Western Central Atlantic

被引:9
|
作者
Aguilera, Orangel [1 ]
Lopes, Ricardo T. [2 ]
Rodriguez, Felix [3 ]
dos Santos, Thais M. [2 ]
Rodrigues-Almeida, Caroline [1 ]
Almeida, Paulo [1 ]
Machado, Alessandra S. [2 ]
Moretti, Tailan [1 ]
机构
[1] Fluminense Fed Univ UFF, Paleoecol & Global Changes Lab, Campus Gragoata,Bloco M,Lab 110, BR-24210200 Niteroi, RJ, Brazil
[2] Fed Univ Rio de Janeiro UFRJ, Nucl Instrumentat Lab, Nucl Engn Program COPPE, Av Horacio Macedo, BR-21941450 Rio De Janeiro, Brazil
[3] Smithsonian Trop Res Inst, Box 0843-03092, Balboa, Panama
关键词
Proto-Caribbean; Marine catfishes; Neogene; microCT; Otolith; MIOCENE CANTAURE FORMATION; MARINE PALEOENVIRONMENTS; CATHOROPS SILURIFORMES; CASTILLO FORMATION; NORTH; COASTAL; ASSEMBLAGE; VENEZUELA; PLIOCENE; REDESCRIPTION;
D O I
10.1016/j.jsames.2020.102619
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
The examined Ariidae marine catfish from the Neogene of tropical America consisted of isolated skulls, otoliths and bone fragments, some of which were described independently as otolith-based species or skull-based species. We used three-dimensional digital rendering (microCT) of skull and otolith reconstructions to recognize anatomical patterns including skull-otolith morphology, spatial allocations of otoliths in the endocranium for taxonomic identifications. We recognized isolated Proto-Caribbean otoliths of Cathorops sp. from the late early Miocene to early Pliocene formations and isolated otoliths of dagger Aspistor verumquadriscutis, dagger Bagre urumacoensis and Notarius sp. from the late Miocene. We explored the endocrania of four fossil Ariidae skulls from the late Oligocene to late early Miocene Proto-Caribbean to determine their internal otolith-cranial morphology, and we identified and described the skulls of dagger Bagre protocarthbeanus and dagger Cantarius nolfi and erected the new species of dagger Bagre castilloensi n. sp. and dagger Bagre ornatus n. sp. based on the internal otolith-skull association. The first fossil record of Bagre marinus from the early Pliocene Cubagua Formation to the late Pliocene San Gregorio Formation completed the ariid geochronological sequence. We discuss the differential stages of fossil preservation of bioapatite skulls and aragonite otoliths according to the diagenetic processes as well as the paleoenvironmental conditions in the sedimentary basins. Detailed microCT, 3D reconstructions, X-rays, dry prepared skeletons and digital photos of otolith and skull are shown to elucidate the in-skull otoliths species descriptions.
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页数:22
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