# List of fossiliferous stratigraphic units in Belgium

| Group or Formation | Period |
| Merksem Formation | Belgium |
| Breda Formation | Neogene |
| Berchem Formation | Neogene |
| Diest Formation | Neogene |
| Edegem Sands | Neogene |
| Kallo Sands | Neogene |
| Kasterlee Formation | Neogene |
| Kattendijk Formation | Neogene |
| Lillo Formation | Neogene |
| Sables d'Anvers | Neogene |
| Tielrode Formation | Neogene |
| Wemmel Formation | Paleogene |
| Aalter Formation | Paleogene |
| Boom Formation | Paleogene |
| Borgloon Formation | Paleogene |
| Brussel Formation | Paleogene |
| Brussels Formation | Paleogene |
| Calcaire de Eisden | Paleogene |
| Calcaire de Mons | Paleogene |
| Hainin Formation | Paleogene |
| Hannut Formation | Paleogene |
| Heers Formation | Paleogene |
| Houthem Formation | Paleogene |
| Kortrijk Clay | Paleogene |
| Landen Formation | Paleogene |
| Lede Formation | Paleogene |
| Neerrepen Sands | Paleogene |
| Tienen Formation | Paleogene |
| Tongeren Group/Borgloon Formation | Paleogene |
| Tufeau de Ciply | Paleogene |
| Poudingue de Ciply Formation | Paleogene |
| Sables de Mons | Paleogene |
| Aachen Formation | Cretaceous |
| Bernissart Calcirudites | Cretaceous |
| Ciply Phosphatic Chalk | Cretaceous |
| Ciply Formation | Cretaceous |
| Craie d'Obourg | Cretaceous |
| Craie de Ciply | Cretaceous |
| Craie de Maisieres | Cretaceous |
| Craie de Nouvelles | Cretaceous |
| Craie de Spiennes | Cretaceous |
| Craie de Triviéres | Cretaceous |
| Dieves et Fortes Toises Formation | Cretaceous |
| Glauconie de Lonzée Formation | Cretaceous |
| Gulpen Formation | Cretaceous |
| Maastricht Formation | Cretaceous |
| Marne Grise Formation | Cretaceous |
| Meerssen Chalk | Cretaceous |
| Nouvelles Chalk | Cretaceous |
| Obourg Chalk Formation | Cretaceous |
| Trivieres Chalk | Cretaceous |
| Tuffeau de St. Symphorien | Cretaceous |
| Vaals Formation | Cretaceous |
| Wealden Group/Baudour Clays | Cretaceous |
| Wealden Group/Sainte Formation | Cretaceous |
| Saint Formation | Cretaceous |
| Spiennes Chalk | Cretaceous |
| St. Symphorien Gravel | Cretaceous |
| Grès d'Orval | Jurassic |
| Gréseux de Florenville | Jurassic |
| Marne de Strassen | Jurassic |
| Marne de Warcq | Jurassic |
| Marnes de Jamoigne | Jurassic |
| Messancy Formation | Jurassic |
| Grès de Mortinsart | Triassic |
| Sables de Mortinsart | Triassic |
| Anhee Formation | Carboniferous |
| Calcaire de Lives | Carboniferous |
| Calcaire de Maredsous | Carboniferous |
| Calcaire de Premier | Carboniferous |
| Calcaire de Seilles | Carboniferous |
| Carboniferous Limestone Formation | Carboniferous |
| Flénu Formation | Carboniferous |
| Lives Formation | Carboniferous |
| Marbre Noir Formation | Carboniferous |
| Tournai Formation | Carboniferous |
| Waulsort Fazies Formation | Carboniferous |
| Acoz Formation | Devonian |
| Aisemont Formation | Devonian |
| Alvana limeshales Formation | Devonian |
| Assise de Frasnes Formation | Devonian |
| Assise de Winenne Formation | Devonian |
| Barvaux Formation | Devonian |
| Bois d'Ausse Sandstone Formation | Devonian |
| Bois de Bordeaux Formation | Devonian |
| Bois Formation | Devonian |
| Burnotien Formation | Devonian |
| Chemung Formation | Devonian |
| Claminforge Formation | Devonian |
| Evieux Formation | Devonian |
| Famenne Formation | Devonian |
| Famenne Group/Senzeille Formation | Devonian |
| Franc Waret Formation | Devonian |
| Fromelennes Formation | Devonian |
| Grands Breux Formation | Devonian |
| Gres et schists de Wepion | Devonian |
| Grès d'Acoz | Devonian |
| Grès de Wepion | Devonian |
| Grès de Wiheries | Devonian |
| Grès du Bois d'Ausse | Devonian |
| Hanonet Formation | Devonian |
| Hodimont Formation | Devonian |
| Jemelle Formation | Devonian |
| Lambermont Formation | Devonian |
| Le Roux Formation | Devonian |
| Leroux Formation | Devonian |
| Les Valisettes Formation | Devonian |
| Lustin Formation | Devonian |
| Moulin Liénaux Formation | Devonian |
| Neuville Formation | Devonian |
| Nèvremont Formation | Devonian |
| Névremont Formation | Devonian |
| Pepinster Formation | Devonian |
| Presles Formation | Devonian |
| Rivière Formation | Devonian |
| Rouillon Formation | Devonian |
| Souverain Formation | Devonian |
| Trois Formation | Devonian |
| Trois Fontaines Formation | Devonian |