This addon will add a natural spawn system to both mobs and plants from Unusual Prehistory 2 mods that exist on their respective biome.

List of Mob biomes

Spoiler

• Carnotaurus - Savanna, Badlands
• Diplocaulus - Swamp, Mangrove Swamp
• Dromaeosaurus - Plains, Forests
• Dunkleosteus - Warm Ocean, Lukewarm Ocean
• Jawless Fish - Warm Ocean, Lukewarm Ocean
• Kentrosaurus - Plains, Jungle, Savanna, Forests
• Kimmeridgebrachypteraeschnidium - Swamp, Beach
• Majungasaurus - Jungles, Beach 
• Megalania - Savanna
• Metriorhynchus - Warm Ocean, Lukewarm Ocean
• Onchopristis - Rivers
• Stethacanthus - Warm Ocean, Lukewarm Ocean
• Talpanas - Dark Forest, Lush Caves, Beach
• Tartuosteus - Warm Ocean, Lukewarm Ocean, Deep Ocean, Deep Lukewarm Ocean, Ocean
• Telecrex - Plains, Meadow, Savanna
• Kaprosuchus - Savanna
• Desmatosuchus - Swamp
• Lystrosaurus - Swamp
• Pachycephalosaurus - Badlands
• Psilopterus - Savanna
• Leptictidium - Desert, Badlands
• Ulughbegsaurus - Plains, Beach
• Coelacanthus - Deep Ocean
• Lobe Finned Fish - River
• Hibbertopterus - Swamps
• Pterodactylus - Caves, Beach
• Brachiosaurus - Sparse Jungle
• Praepusa -  Frozen Ocean, Snowy Beach
• Aegirocassis - Deep Ocean
• Mosasaurus - Deep Ocean

List of Plants biome

Spoiler

• Gingko - Forests
• Lepidodendron - Swamps
• Bennettitales - Badlands, Deserts
• Calamophyton - Swamps
• Cladophlebis - Swamps, Forests, Jungles
• Cooksonia - Meadow, Plains
• Horsetail - Swamps, Forests, Jungles
• Giant Horsetail - Swamps, Forests, Jungles
• Leefructus - Swamps, Forests, Jungles, Plains
• Moss Layer - Swamps
• Quillwort - Swamps, Rivers
• Raiguenrayun - Sunflower Plains
• Rhynia - Swamps, Beach
• Aethophylllum - Jungles, Swamp
• Archaeosigillaria - Swamp
• Brachyphyllum - Old Growth Taiga, Swamp
• Neomariopteris - Badlands, Desert
• Tempskya - Old Growth Taiga
• Delitzschala Stalk - Swamps
• Zhangsolva Bloom - Sunflower Plains

This addon is also compatible with:

• Spawn
• Windswept
• Environmental
• Atmospheric
• Nature's Spirit
• Biomes O' Plenty
• Oh The Biomes We've Gone
• Region Unexplored

Special Thanks to:

• Unusual Prehistory 2 Team for creating the mod
• Platypus, for helping and tweaking the spawn system

If you found any problem or bugs, please report to the comment section or discord server