Wildlife Type

Primitive reptiles in Diapsida (Phylogenetic tree) - Animals in the Fossil sites, and Biodiversity

Classified animal picture guide. Clicking the Organism name shows the images, and pointing the Organism name shows the tooltip with three links at the left-top corner.
The followings are extinct Diapsids excavated and extant species in the world. Diapsids evolved from Amphibias, and ancestors of Lizards and snakes lived from Carboniferous and survived three times the Great Dying③④⑤.　The explanation in brackets is the ages they lived in extinct species. Note that Mya is million years ago. For example, "48.6～40.4 Mya" shows a range between 48.6 and 40.4 million years ago. The time range is shown in the Geological Time Table. The followings are a part of the Evolutionary Tree.
  • Kingdom Animalia
    • Phylum Chordate
      • Subphylum Vertebra
        • Infraphylum Gnathostomata (Jawed vertebrates)
          • Class Amphibia
            • Superorder Reptiliomorpha (Reptile-like amphibia; 318.1～272.5 Mya)
              Primitive
              amniota              		 Westlothiana   (336～332.9 Mya; Primitive amniotes), Casineria   (339.4～336 Mya; Primitive amniotes), Eogyrinus   (318.1～299 Mya), Diplovertebron   (311.7～306.5 Mya), Diadectes   (290～272.5 Mya; Ancestors of amniotes), Seymouria   (284～272.5 Mya; Many reptilian features)
          • Class Synapsida (Mammal-like reptiles)
          • Class Sauropsida (Non mammal-like reptiles)
            • Subclass Anapsida (No arch near the temples)
            • Subclass Diapsida (Two arches near the temples)
              • Order Araeoscelidia (Small reptiles; 305～272.5 Mya)
                Primitive
                reptile                		 Petrolacosaurus   (305～302 Mya), Araeoscelis   (284～272.5 Mya)
              • Order Avicephala (Small reptiles)
                Primitive
                reptile                		 Coelurosauravus   (258-251 Mya; Wing-like glider), Longisquama   (242～221.5 Mya; Long structures of back), Hypuronector   (228～216.5 Mya), Drepanosaurus   (216.5～203.6 Mya), Megalancosaurus   (216.5～203.6 Mya)
              • Order Thalattosauria (Marine reptile; 237～216.5 Mya)
                Marine
                reptile                		 Askeptosaurus   (235～225 Mya), Thalattosaurus   (228～216.5 Mya), Endennasaurus   (216.5～203.6 Mya)
              • Order Younginiformes (Marine reptile; 260.5～249.7 Mya)
                Marine
                reptile                		 Thadeosaurus   (254～251 Mya), Hovasaurus   (251～249.7 Mya), Younginia (260.5～253.8 Mya)
              • Infraclass Ichthyopterygia
                Marine
                reptile                		 Grippia (251～199.6 Mya), Utatsusaurus   (249.7～245 Mya)
                • Order Ichthyosauria (Large marine reptiles; 249.7～65.5 Mya)
                  Marine
                  reptile                  		 Cymbospondylus   (249.7～228 Mya), Mixosaurus   (245～237 Mya), Shonisaurus   (228～203.6 Mya; ２１m), Ichthyosaurus   (216.5～112 Mya; Great Dying④), Ophthalmosaurus   (199.6～150.8 Mya), Eurhinosaurus   (196.5–175.6 Mya), Excalibosaurus   (196.5～189.6 Mya), Stenopterygius   (183.7～175.6 Mya)
              • Infraclass Lepidosauromorpha (Lizards, Snakes, Tuatara)
                • Order Eolacertilia (Ancestors of snakes and lizards)
                  Ancestors of
                  snake,lizard                  		 Paliguana   (251～245 Mya; Earliest Lepidosauromorpha), Icarosaurus   (228～216.5 Mya; Wing-like glider), Kuehneosaurus   (216.5～199.6 Mya; Wing-like glider)
                • Superorder Sauropterygia (Marine reptiles with flippers)
                  • Order Placodontia (Marine reptiles with ablet teeth; 245～199.6 Mya)
                    Marine
                    reptile                    		 Placodus   (249.7～228 Mya), Henodus   (228–220 Mya; Back like turtle), Psephoderma   (216.5～199.6 Mya; Back like turtle)
                  • Order Nothosauroidea (Marine reptile; 251～245 Mya)
                    Marine
                    reptile                    		 Nothosaurus   (245～216.5 Mya), Ceresiosaurus   (245～237 Mya), Keichousaurus   (245～237 Mya), Pachypleurosaurus   (245～228 Mya)
                  • Order Plesiosauria (Marine reptile)
                    • Suborder Plesiosauroidea (Long-necked plesiosaurs; 216.5～65.5 Mya)
                      Marine
                      reptile                      		 Plesiosaurus   (203.6～85.8 Mya; Great Dying④), Hydrorion   (183.7～175.6 Mya), Bishanopliosaurus   (183.7～175.6 Mya), Cryptoclidus   (164.7～155.7 Mya), Muraenosaurus   (164.7～161.2 Mya), Thalassomedon   (99.6～70.6 Mya), Elasmosaurus   (93.5～70.6 Mya), Futabasaurus   (85.8～83.5 Mya), Dolichorhynchops   (83.5～70.6 Mya)
                    • Suborder Pliosauroidea (Short-necked plesiosaurs)
                      Marine
                      reptile                      		 Rhomaleosaurus (203.6～175.6 Mya; Great Dying④), Liopleurodon   (164.7～161.2 Mya; １０m), Peloneustes   (164.7～155.7 Mya), Kronosaurus   (145.5～65.5 Mya; １３m), Leptocleidus   (136.4～99.6 Mya)
                • Superorder Lepidosauria (Lizards, Snakes, Tuatara)
              • Infraclass Archosauromorpha (Crocodiles, Pterosaurs, Dinosaurs)