Mock turtle soup from the time of the personal union between the Kingdom of Hanover and the Kingdom of Great Britain. While green sea turtle was popular for soup making in many countries, U.S. recipes included many other local species. Soup made from snapping turtles is still available in parts of the country. Similarly mock turtle soup recipes have a variety of substitute meats. Beside organ meats like the British recipes, recipes in the U.S. often use stewing beef or ground beef but may call for alligator. The Campbell Soup Company once produced canned mock turtle soup made of calf's head. In a
Twist-necked turtle twist-necked specimens were found on a southern Florida golf course, but no impact on native species is expected to occur. Twist-necked turtle The twist-necked turtle ("Platemys platycephala") also known as the flat-headed turtle, is distributed widely across northern South America. Twist-necked turtles have extremely flat shells that help them hide from predators under rocks and debris. When threatened, this turtle withdraws by twisting its head into its shell. "P. platycephala" is the only species of the genus "Platemys" and occurs in northern and central South America. "Platemys platycephala" means “flat turtle, flat-head” and accurately describes the structure of the head