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The genus ''Venus'' contains these extant species:<ref>{{cite WoRMS |author=Philippe Bouchet, Mark Huber & Serge Gofa [[Category:Extant Valanginian first appearances]] ...

| fossil_range = {{fossilrange|Valanginian|Recent}} The scientific name '''Carcharhinidae''' was first proposed in 1896 by [[David Starr Jordan|D.S. Jordan]] and [[Barton Warren ...

| fossil_range = {{Fossilrange|Valanginian|recent}} ...have existed since the Early Cretaceous.<ref>{{Cite journal |last=Vavrek |first=Matthew J. |last2=Stockey |first2=Ruth A. |last3=Rothwell |first3=Gar W. |d ...

...title = Phylogeny of seed plants based on all three genomic compartments: Extant gymnosperms are monophyletic and Gnetales' closest relatives are conifers | ...p]] of angiosperms, or whether they are sister to, or nested within, other extant gymnosperms. Numerous fossil gymnosperm clades once existed that are morpho ...

| fossil_range = {{fossil range|Valanginian|Recent}} ...the sea floor. Three of their five pairs of legs have claws, including the first pair, which are usually much larger than the others. Highly prized as [[sea ...

Within the extant subfamilies, genera include:<ref>{{Cite web |title=family Gryllotalpidae Le ...ir newly occupied area, where [[biological control]] may be attempted. The first-detected invasive mole cricket species was ''Neoscapteriscus didactylus'', ...

...g animal, including feeding, movement, and social behaviour. As one of the first scientifically well-known dinosaurs, ''Iguanodon'' has occupied a small but ...se also [[theropod]] teeth were found, thus belonging to carnivores, he at first interpreted these bones, which he tried to combine into a partial skeleton, ...

Plesiosaurs first appeared in the latest [[Triassic]] [[Period (geology)|Period]], possibly i ...more than a hundred valid species have been described. In the early twenty-first century, the number of discoveries has increased, leading to an improved un ...