A new analysis reveals that overfishing has caused populations of chondrichthyan fishes -- sharks, rays, and chimaeras -- to decline by more than 50 per cent since 1970. To determine the consequences, ...

Queensland Museum scientists describe the 400-million-year-old fossil Palaeospondylus australis, possibly the smallest ...

A new analysis published in the journal Science reveals that overfishing has caused populations of chondrichthyan fishes – sharks, rays, and chimaeras – to decline by more than 50 per cent since 1970.

Overfishing threatens sharks and rays, crucial species for marine ecosystems, but recovery strategies offer hope.

Ichthyology is the branch of zoology devoted to the study of fish, including: bony fish, Osteichthyes; cartilaginous fish, Chondrichthyes; and jawless fish, Agnatha. The discipline can include the ...

A new analysis published in the journal Science reveals that overfishing has caused populations of chondrichthyan fishes – sharks, rays, and chimaeras ...

Important to note when we refer to fish or fishes throughout this review paper, we are specifically referring to species of bony fishes (Teleostei) rather than cartilaginous (Chondrichthyes) or ...

Area-based conservation is essential to safeguard declining biodiversity. Several approaches have been developed for identifying networks of globally important areas based on the delineation of sites ...

注意：本页有Unihan新版汉字：“𫚉”，这些字符可能会错误显示，详见Unicode扩展汉字。 巨尾𫚉科是板鳃亚纲燕𫚉目的其中一科。 事实速览 巨尾𫚉属, 科学分类 ... Seamless Wikipedia browsing. On steroids. Every time you click a link to Wikipedia, Wiktionary or Wikiquote ...

For more information, see the paper: de Carvalho, MR and MP Ragno (2011) An unusual, dwarf new species of Neotropical freshwater stingray, Plesiotrygon nana sp. nov., from the upper and mid Amazon ...