Results 111 to 120 of about 2,581 (229)

A taxonomic and morphological redescription of Potamotrygon falkneri Castex & Maciel, 1963 (Chondrichthyes: Myliobatiformes: Potamotrygonidae)

open access: yesNeotropical Ichthyology
A taxonomic revision of two nominal species of freshwater stingrays of the genus Potamotrygon previously considered valid, Potamotrygon falkneri Castex & Maciel, 1963 and Potamotrygon castexi Castello & Yagolkowski, 1969, was conducted based on a ...
João Paulo C. B. da Silva   +1 more
doaj   +1 more source

Ichthyological ecoregions of Argentina [PDF]

open access: yes, 2002
The Argentine Republic is situated in the southernmost portion of the American continent, occupying over 2,785,600 km2 not including the Antarctic territory. The country ranges from subtropical areas (21º46’S) to subantarctic regions (55º03’S), extending
López, Hugo Luis   +2 more
core  

Miocene Shark and Batoid Fauna from Nosy Makamby (Mahajanga Basin, Northwestern Madagascar) [PDF]

open access: yes, 2015
published_or_final_versio
Ali, JR   +5 more
core   +1 more source

Serratolamna serrata (Agassiz) (Pisces, Neoselachii) from the Maastrichtian (Late Cretaceous) of Jamaica [PDF]

open access: yes
Three teeth of the shark Serratolamna serrata (Agassiz) from the Guinea Corn Formation (Central Inlier) represent the first recorded occurrence of fossil sharks within the Cretaceous of Jamaica.
Mitchell, S.F., Underwood, Charlie J.
core  

Spring 2007 [PDF]

open access: yes, 2007
https://nsuworks.nova.edu/occ_currents/1014/thumbnail ...
NSU Oceanographic Center
core   +1 more source

Potamotrygon boesemani (Chondrichthyes: Myliobatiformes: Potamotrygonidae), a new species of Neotropical freshwater stingray from Surinam

open access: yesNeotropical Ichthyology
Potamotrygon boesemani, new species, is described from the Corantijn river drainage in Surinam. The species has a diagnostic dorsal color pattern formed by deep orange to red ocellated spots of irregular form, encircled by relatively broad black rings ...
Ricardo S. Rosa   +2 more
doaj   +1 more source

A new species of Abdounia (Elasmobranchii, Carcharhinidae) from the base of the Boom Clay Formation (Oligocene) in northwest Belgium [PDF]

open access: yes, 2007
On the basis of isolated teeth, collected from the base of the Boom Clay Formation (Rupelian, Oligocene) at the SVK clay pit (Sint-Niklaas, NW Belgium), a new species of requiem shark, Abdounia belselensis sp. nov., is described.
Mollen, F.H.
core  

Species, Performance and Sex Ratio of Shark Landed in Pelabuhan Perikanan Samudra Cilacap [PDF]

open access: yes, 2017
Produksi ikan hiu di Indonesia masih mengandalkan hasil tangkapan dari alam. Meskipun sudah terdapat beberapa per-aturan yang mengatur tentang penangkapan, pemanfaatan dan status perlindungannya, namun dalam prakteknya kurang dipatuhi.
Abulias, M. N. (Muh)   +2 more
core  

Distribuição do tucunaré Cichla cf. monoculus (Osteichthyes, Cichlidae) no Pantanal. [PDF]

open access: yes, 2019
A introdução de espécies em ecossistemas aquáticos tem sido documentada em todo o mundo, mas o impacto da presença destas nos novos ambientes ainda não é bem conhecido. O objetivo desta pesquisa foi determinar a área de distribuição do tucunaré Cichla cf.
MARQUES, D. K. S., RESENDE, E. K. de
core  

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