Lakebed biome

Is a dried out region that appears in desert biomes It is mainly a lakebed that has steep slopes on the edges and drops downward below sea level with a mix of dirt and sand at the bottom like the bottom of oceans. Around the dried out lake will be dried river beds connecting to it that also go below sea level a few blocks, sometimes piers will be on the edge of the lake and a new fishing hut structure and some dried dead trees. In the bottom of the lakebeds is dead bushes, coral and some small pools of water 1-2 blocks deep, often times there will be fossils in the bottom of the lakebed and a few new ones like a huge one shaped like a whale and another with a snake shape that's sort of like a serpent, there is a chance shipwrecks will also spawn in the bottom.