Prehistoric Update

1.20, the first release of Prehistoric Update, is an upcoming major update with the possible release date in early spring, 2023. Focusing at implementing various prehistoric animals, and third winner of the 2018 Biome vote event; Badlands.

Blocks
Decayed wood Flowery cactus
 * Generates only in the Prehistoric dimension.
 * Used by cavemen in order to make their own campfires.

Limestone Sauropod egg Timetravel block
 * Generates naturally in caverns and beaches.
 * Can only be mined with iron and diamond pickaxe.
 * Can be obtained by breeding sauropods.
 * Resembles a larger version of sea turtle eggs without green spots and is orangish-yellow in color, it is also twice the size of the sea turtle eggs.
 * Can be mined simply with a hand and can be placed down again.
 * Obtained by crafting a single limestone block with one obsidian and one glowstone dust.
 * Can be placed into a nether portal-shaped portal and lit with fire in order for the portal to work.
 * The timetravel portal has a green door as opposed to the nether portal's purple door.

Items
Raw hadrosaur Cooked hadrosaur Raw sauropod Cooked sauropod Limestone sword Limestone axe Limestone pickaxe Limestone shovel Limestone hoe Limestone ingot Prehistoric spear Stonechip
 * Obtained by killing a hadrosaur mob without fire.
 * Obtained from a hadrosaur mob dying from fire or by cooking a raw hadrosaur in a furnace.
 * Obtained by killing a sauropod mob without fire.
 * Obtained from a sauropod mob dying from fire or by cooking a raw sauropod in a furnace.
 * Is stronger than the iron sword, but not as strong as the diamond sword.
 * Crafted by using two limestones and a single stick.
 * Is stronger than the iron axe, but not as strong as the diamond axe.
 * Crafted by using two limestones and three sticks.
 * Is stronger than the iron pickaxe, but not as strong as the diamond pickaxe.
 * Crafted by using three limestones and two sticks.
 * Is stronger than the iron shovel, but not as strong as the diamond shovel.
 * Crafted by using a single limestone and two sticks.
 * Is stronger than the iron hoe, but not as strong as the diamond hoe.
 * Crafted by using two limestones and two sticks.
 * Can be obtained by breaking gravel, although this has about 50% chance of happening.
 * Can be crafted into limestone block by crafting 4 limestone blocks together.
 * Can be obtained by crafting a single dinosaur claw and two sticks together.
 * Has a same use as tridents, except without any enchantments.
 * Is used by cavemen in order to light up campfires they have crafted.
 * Can be obtained by killing a caveman or if a caveman left the stonechip behind.

Mobs
Ankylosaurs Cavemen Hadrosaurs Nautilus Plesiosaurs Pterodactyls Raptors Sauropods Scorpions
 * Spawns naturally only on the Prehistoric taiga, forests, and plains of the Prehistoric dimension.
 * Comes in two different variants, the clubless one (based on real life nodosaurids) and the clubbed ones (based on more advanced real life ankylosaurids).
 * It is a neutral mob that will only attack if provoked.
 * Spawns naturally in all land biomes in the Prehistoric dimension.
 * A neutral villager-like mob with animal skins over its torso.
 * Has the same model as villagers, but with player-like arms for grabbing items.
 * It will become hostile if provoked or if its village is destroyed by the player.
 * It can make campfires by crafting each decayed wood into campfire.
 * Spawns naturally on all land biomes in the Prehistoric dimension, except the snowy biomes.
 * Comes in 15 different variants, with two actually based on Iguanodonts, the Iguanodon and Ouranosaurus.
 * All variants of the hadrosaurs are not shrink-wrapped and are scientifically accurate to be up-to-date while also fitting Minecraft's theme and looks.
 * It is a passive mob and will run away if provoked.
 * Drops raw hadrosaur if killed without fire or cooked hadrosaur if killed by fire.
 * Replaces squids in the Prehistoric dimension.
 * Drops ink sac and nautilus shell.
 * Spawns naturally in all of the underwater biomes, except frozen oceans and small lakes, in the Prehistoric dimension.
 * Comes in two variants, the medium-sized Plesiosaurus and the much larger longer-necked Elasmosaurus.
 * It is a neutral mob that will only attack if provoked.
 * Drops 1-3 raw fish if killed.
 * Spawns naturally in every biome, except the snowy biomes, in the Prehistoric dimension.
 * Pterodactyls have fur-like pycnofibers all over their bodies, they also have more rounded wing tips instead of pointed tips, are not shrink-wrapped, and do not grab prey with feet (instead they grab with their beaks/snouts), due to being made to be scientifically accurate while also being fitting for Minecraft.
 * Comes in 7 variants, the tiny bat-like earless nocturnal passive mob (based on real life anurognathids), the small long-tailed tooth-beaked daytime-and-nighttime passive mob (based on real life Rhamphorynchids), the medium-sized moon-shape-crested diurnal passive mob (based on real life Tapejarids), the slightly larger long-beaked toothy diurnal passive mob (based on real life Ornithocheirids), the large tall-crested toothless diurnal neutral mob (based on real life Pteranodon), and the gigantic long-necked long-beaked dirunal hostile mob (based on real life Quetzalclatlus and Hatzegopteryx).
 * Drops 1-3 membranes when killed.
 * Spawns naturally in all land biomes in the Prehistoric dimension, except the snowy biomes.
 * Based on and is inspired by the accurate paleocraft mod's Dromaeosaurus and Troodon highly accurate models, the vanilla Minecraft raptors are fully-feathered, have no pronated hands, and can be tamed by feeding it raw beef.
 * It comes in 4 variants, the tiny black passive Microraptors which spawns naturally in jungles, forests, and swamps, the small tan-colored neutral Velociraptors which spawns naturally in plains and deserts, the slightly larger reddish-colored neutral Deinonychuses (based on the Paleocraft's Dromaeosaurus coloration) which spawns naturally in forests and plains, and the large brownish completely-untameable hostile Utahraptors that spawns naturally in plains.
 * Drops 1-3 feathers when killed.
 * Spawns on all land biomes, except the snowy biomes, in the Prehistoric dimension.
 * Comes in 8 variants based on real life sauropods, the small cow-sized Magyarosaurus, the elephant-sized armored Saltasaurus, much larger club-tailed Shunosaurus, the giant long-necked Mamenchisaurus, the giant thick-headed Camarasaurus, the famous giant Apatosaurus, the larger Diplodocus, and the famous giant long-armed Brachiosaurus.
 * All sauropod variants are passive and will not attack players even if provoked.
 * Can be bred with apples and can lay around 4-6 sauropod eggs, which hatches around 5 Minecraft days into sauropodlets and in turn grows up into adult sauropods within 10 Minecraft days.
 * Sauropod variants must breed with their own variants and cannot breed with other sauropod variants, the baby sauropods will always be the same variant as their parent, thanks to advanced coding.
 * The larger sauropods are more difficult to kill by players due to their large size, but the smaller sauropods like Magyarosaurus are easier to kill.
 * Drops 1-3 raw sauropod if killed without fire or cooked sauropod if killed by fire.

Stegosaurs Sabertooths T-Rex Triceratops Vultures Woolly mammoths
 * Spawns on all land biomes, except the snowy biomes, in the Prehistoric dimension.
 * Comes in two variants, the medium-sized spiky Kentrosaurus and the larger plated Stegosaurus.
 * It is a neutral mob that will only attack if provoked.
 * Spawns naturally only in the plains and forests in the Prehistoric dimension.
 * It resembles a large maneless lion with large sharp teeth and a short bobcat-like tail.
 * It is a hostile mob that will attack players that are within 10 blocks away.
 * Can be scared off by fireworks or throwing tridents.
 * Spawns naturally only in the plains of the Prehistoric dimension.
 * It is a hostile mob that will attack any players that are within 15 blocks away.
 * Its model is based on more accurate depictions of real life Tyrannosaurus, having no shrink-wrapping nor pronated hands, it also has protofeathers as a baby to be up-to-date.
 * Drops 1-3 dinosaur claws when killed.
 * Spawns naturally in swamps and plains in the Prehistoric dimension.
 * It is a neutral mob to almost every carnivorous mobs (as well as players) that only attacks if provoked or if its babies are nearby.
 * Is completely hostile to T-rex due to the T-rex being natural predators of Triceratops.
 * It is not shrink-wrapped and has the head covered with keratin to be up-to-date on being scientifically accurate, while also keeping the mob fitting for Minecraft.
 * They spawn in badlands biomes, with a wider range in the Prehistoric dimension.
 * Drops feather and raw bird.
 * Spawns naturally only in the taigas, tundra, and plains in the Prehistoric dimension.
 * It is a neutral mob that only attacks if provoked or if its babies are harmed.
 * Unlike overworld's elephants, it is not tameable.
 * Drops 1-3 brown wool if killed.

World generation
Badlands pyramid Prehistoric dimension
 * Built out of various kinds of red sandstone and terracotta.
 * Displays an already built wither spawning point (without the 3 skulls).
 * Contains biomes that resembles a more "prehistoric" Overworld biomes.
 * Lacks the savanna and mesa biomes.
 * Can only be accessed through a timetravel portal.
 * This world has no monsters nor most overworld neutral mobs, with the exception of spiders, cave spiders, or endermen.

Miscellaneous
Tumbleweed

Blocks
Wooden chest
 * Can now be made into, not just two combined chests, but also three combined chests.

Items
Membrane
 * Renamed from "Phantom membrane" to simply "Membrane" due to pterodactyls now dropping these items.

Mobs
Camel Reindeer Cod
 * Can now spawn naturally in temperate/lush biomes of the Prehistoric dimension.
 * Can now spawn naturally in cold biomes of the Prehistoric dimension.
 * Can now spawn naturally in frozen oceans of the Prehistoric dimension.