I think the size values of these animals (this and Helicorpion) might be too large? The eagle shark is 5 foot long and Edestus (from the Artificialis series) is 22 feet long, but the eagle shark has almost double the size value that Edestus does.

Fixed.

If this category is not displayed in the store, please add this code: "menuButton":"livestock",

There is a more suitable category in the workshop: "extinctElasmobranchii", which is mostly used to accommodate those extinct sharks. If you think this category is not good-looking, you can write in the json file: "extinctElasmobranchii":"Extinct Elasmobranchii", remember, I sent you the complete code, please don't change it at will, otherwise it will become an independent Classification.