fossiles
| Nom | Type | Notoriété | Popularité |
|---|---|---|---|
| Zygosaurus | Taxon | 11 | 0.2 |
| Zychaspis | Taxon | 3 | 0.1 |
| Zhongjianichthys Rostratus | Taxon | 9 | 0.0 |
| Zhongjianichthys | Taxon | 9 | 0.8 |
| Zenaspis | Taxon | 3 | 0.4 |
| Zatrachys | Taxon | 11 | 0.2 |
| Zatrachydidae | Taxon | 10 | 0.0 |
| Yunnanozoon Lividum | Taxon | 19 | 0.5 |
| Yunnanolepis | Taxon | 4 | 0.0 |
| Yuanansuchus | Taxon | 7 | 0.0 |
| Yorgia | Taxon | 12 | 1.0 |
| Ymeria | Taxon | 8 | 0.0 |
| Yilingia Spiciformis | Taxon | 4 | 0.1 |
| Yilingia | Taxon | 4 | 0.0 |
| Yelovichnus Gracilis | Taxon | 2 | 0.0 |
| Yarnemia | Taxon | 4 | 0.1 |
| Xiphodracon | Taxon | 5 | 0.0 |
| Xidazoon | Taxon | 7 | 0.7 |
| Xenotosaurus | Taxon | 6 | 0.0 |
| Xenokeryx | Taxon | 11 | 0.2 |
| Xenobrachyops | Taxon | 5 | 0.0 |
| Xanioascus Canadensis | Taxon | 5 | 0.0 |
| Wurmiella | Taxon | 3 | 0.2 |
| Wulong | Taxon | 8 | 0.6 |
| Windermeria Aitkeni | Taxon | 8 | 0.1 |
| Whiteiidae | Taxon | 5 | 0.1 |
| Whiteia | Taxon | 7 | 0.1 |
| Whatcheeriidae | Taxon | 12 | 0.1 |
| Whatcheeria Deltae | Taxon | 2 | 0.0 |
| Whatcheeria | Taxon | 9 | 0.2 |
| Whaitsioidea | Taxon | 2 | 0.0 |
| Whaitsiidae | Taxon | 7 | 0.0 |
| Wetlugasaurus | Taxon | 10 | 0.0 |
| Westlothiana | Taxon | 19 | 4.1 |
| Westergaardodinidae | Taxon | 2 | 0.0 |
| Westergaardodina | Taxon | 3 | 0.0 |
| Wellesaurus | Taxon | 4 | 0.0 |
| Weigeltaspis | Taxon | 3 | 0.0 |
| Watsonisuchus | Taxon | 5 | 0.0 |
| Watongia Meieri | Taxon | 9 | 0.2 |
| Wantzosaurus | Taxon | 4 | 0.0 |
| Wangwosaurus | Taxon | 3 | 0.1 |
| Volgasuchus | Taxon | 2 | 0.0 |
| Vigilius | Taxon | 6 | 0.0 |
| Viatkosuchus | Taxon | 5 | 0.0 |
| Viatkogorgon Ivachnenkoi | Taxon | 4 | 0.0 |
| Viatkogorgon | Taxon | 10 | 0.1 |
| Vetulicolia | Taxon | 27 | 3.5 |
| Vertébrés | Taxon | 161 | 133.1 |
| Vernanimalcula Guizhouena | Taxon | 10 | 0.3 |