Transitional Fossil List 16: Cambrian Chordates
Haikouella Haikouichthys M Metaspriggina Myllokunmingia P Pikaia Y Yunnanozoon Z Zhongjianichthys Zhongxiniscus Cathaymyrus
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Transitional Fossil List Part One: Pelycosaurs
Mammal like reptiles of the early Permian. Aerosaurus Romer 1937 Valid. Late Carboniferous [1] - Lower Permian [2] United States of America [2] Angelosaurus Olson Beerbower 1953 Valid. Upper Permian [3] United States of America [3] Anglosaurus Bruner 1991 Sic N/A N/A Incorrect spelling for Angelosaurus [4] Apsisaurus Laurin 1991 Valid. Lower Permian [5] United States of America [5] Formerly assigned as a "eosuchian" diapsid. [6] Archaeobelus Cope 1877 Syn. N/A N/A Synonym of Clepsydrops [4] Archaeothyris Reisz 1972 Valid. Upper Carboniferous [1] United States of America [1] Archaeovenator Reisz Dilkes 2003 Valid. Upper Carboniferous [7] United States of America [7] Arribasaurus Williston 1914 Syn. N/A N/A Synonym of Ophiacodon [8] Baldwinonus Romer Price 1940 Valid. Late Carboniferous [1] - Early Permian [9] United States of America [9] Basicranodon Vaughn 1958 Syn. Lower Permian [1] United States of America [1] Synonym of Mycterosaurus [...
Transitional Fossil List 13: Turtles
† Acerosodontosaurus ? † Claudiosaurus ? † Eorhynchochelys † Eunotosaurus ? † Odontochelys † Pappochelys † Sauropterygia ? † Saurosphargidae ? Testudinata † Chinlechelys † Proganochelys † Proterochersis † Australochelyidae Australochelys Palaeochersis Waluchelys Mesochelydia † Condorchelys † Eileanchelys † Heckerochelys † Indochelys † Kayentachelys Perichelydia † Kallokibotion † Spoochelys † Angolachelonia ? † Macrobaenidae ? † Paracryptodira ? † Sinemydidae ? † Xinjiangchelyidae ? † Helochelydridae Aragochersis Helochelydra Helochelys Naomichelys Solemys † Meiolaniformes Chubutemys Otwayemys Patagoniaemys Peligrochelys Trapalcochelys Meiolaniidae Gaffneylania Meiolania Ninjemys Niolamia Warkalania † Sichuanchelyidae Laurasichersis Mongolochelys Sichuanchelys
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