Purple Frog: Stopped evolving 100 million years ago.
The Purple Frog, also known as the West Ghats Snout Frog (Purplefrog), is a living fossil animal in nature, and the purple frog discovered so far was discovered in the West Indies in 2003. Experts believe that the reason why purple frogs have not been discovered is because they live underground, only appear for two weeks during the rainy season, and have been living invisibility at other times.
2. Frilled shark: Stopped evolving 300 million years ago.
The frilled shark (scientific name: Chlamydoselachus anguineus), also known as the pseudoemoe eel, is the most primitive species of sharks, without subspecies differentiation, known as "living fossils". There are six gill fissures on both sides of the body, and the gills are elongated and wrinkled, and cover each other, so they are named the frilled shark.
3. Jurassic shrimp: 60 million years ago stopped evolving.
The Jurassic shrimp (scientific name Neoglyphea neocaledonica) is a shrimp believed to have existed during the Jurassic period, belonging to the genus Neocultura in the family Otididae. In the past, the family Prawnidae was once thought to have been extinct 60 million years ago. Smithsonian institution scientists discovered in 1975 that the 10-legged lobster-like prehistoric shrimp were thought to have gone extinct 50 million years ago. But in 2006, this species of live shrimp was discovered in the Coral Sea between Australia and New Caledonia and is considered a "living fossil". The same genus of this shrimp is Neoglyphea inopinata
4. Siberian "three-eyed beetle": stopped evolving 100 million years ago.
Triangular beetles - Classified Triangular beetles are Coleoptera insects. Beetles, collectively known as Coleoptera insects, have a hard shell on the outside of the body, the forewings are, thick and hard, and the hindwings are membranous, such as scarabs, celestial bulls, weevils, etc. Coleoptera insects, more than 350,000 species, making it the largest order in the animal kingdom.
5. Velvet worms: 360 million years ago stopped evolving.
Velvet Worms are insectoids that evolved 300 million years ago and are characterized by paired feet and obesity. Its descendants lived in present-day Africa, Asia, the Caribbean, and South America, and were terrestrial creatures.
6. Crocodile: Stopped evolving 230 million years ago.
It is one of the earliest and most primitive animals found alive to date. Appearing in the Mesozoic Era (about 200 million years ago) from the Triassic to the Cretaceous Period, the fierce vertebrate reptile was a contemporaneous animal with dinosaurs and was a carnivore. There are 23 species of recognized crocodiles.
7. Platypus: Stopped evolving 110 million years ago.
It was an incompletely evolved mammal of very few species, with only one species of platypus in its genus, and one of the lowest mammals; in the late 18th century, George Shaw received a specimen of the platypus, believing it to be the product of a prank, and named it in 1799. The platypus's beak and feet resemble ducks, while its body and tail resemble beavers. It appeared 25 million years ago and still lives in Australia today.
8. Nautilus: Stopped evolving 500 million years ago.
It is found in the coral reef waters of the tropical Indian Ocean and the western Pacific Ocean. The Nautilus has undergone hundreds of millions of years of evolution on Earth, but its appearance, habits and other changes are very small, known as the "living fossils" in the ocean, and it has high value in the study of biological evolution and paleontology.
9. Horseshoe crab: 450 million years ago it stopped evolving. : There are four species of horseshoe crabs in the world: American horseshoe crab, scorpion horseshoe crab, giant horseshoe crab and Chinese horseshoe crab (three-spined horseshoe crab). The body length can reach 60 cm (including tail length) and the weight is 3-5 kg. The body surface is covered with several chicine exoskeletons and is dark brown in color. The cephalothorax has well-developed horseshoe-shaped dorsal carapace and is often referred to as Horseshoe Crabs. The body is approximately scoop-shaped and divided into three parts: head, thorax, abdomen and tail. The cephalothorax is broad, half-moon-shaped, with 6 pairs of appendages on the ventral surface; the ventral carapace is small, slightly hexagonal, with several sharp spines on both sides, 6 pairs of flaky swimming limbs underneath, and a pair of gills on each of the last 5 pairs for breathing; the tail is sword-shaped. The body is tan. Usually, they live in the sea sand, walk slowly on the beach at low tide, and the adults and males often live together.
10. Martian ants: 120 million years ago stopped evolving. Known as the "Martian ant", the Martialisheureka ant is the last common ancestor of all ants found so far, a direct descendant of the subterraneanforager, who lived underground until it began to evolve 120 million years ago.
11. Coelacanth: 410 million years ago it stopped evolving.
Coelacanth, a general term for some leaf-fined teleost fish in the order Coelacanth, Order Ofcaliaceae (Crossopterygii). Species of the close but extinct suborder Rhipidistia are thought to be the ancestors of terrestrial vertebrates. In some taxonomic systems , coelacanths and fanfins are considered to belong to different orders within the suborder Crossopterygii. Coelacanths first appeared 377 million years ago, when they were extremely abundant on Earth. Coelacanthus fossils were found from the late Permian (295 million years ago) to the early Cretaceous period (144 million years ago). Coelacanth, like other fish of its kind, is less ossified and exhibits a general tendency to move away from early freshwater environments and towards an oceanic lifestyle. Long thought to have been extinct about 60 million years ago, the coelacanth was caught in 1938 with a net near the shore of southern Africa, the Latimeria chalumnae. Under a bounty call, a second tail was caught in the Comoros archipelago in 1952 (named Malania anjouanae, probably the same species as speartail).
12. Mantis shrimp: 400 million years ago stopped evolving. The English name is Mantis Shrimp (mantis shrimp), belongs to the arthropod phylum, crustacean subphylum, soft nails, shrimp subclass, orophopoda (this suborder is a suborder below). Among them, in addition to the fossilized Sculdidae, the living species are divided into 7 families: Bathysquilloidea, Gonodactyloidea, Squilloidea, Squilloidea, Lysiosquilloidea, Erythrosquilloidea, and Erythrosquilloidea. Broad shrimp maggots (Eurysquilloidea) and pseudo-shrimp slugs (Parasquilloidea).