48 
Genus Ortliopteryx Wiman Wiss. Ergebn. schwed. Siidpolarexped* 
1901—03. Lief. III. 
Orthopteryx gigas Wiman 1. e. 
Miocaen inf. (Patagonische Molasse). Seymour-Insel. 
Genus Ciadornis Ameghino Bol. Inst. Geogr. Argent. XV. 1894. 588. 
Cladornis paehypus Ameghino 1. c. 584 — 586. Fig. 35. An. Mus. Nac. 
Buenos Aires (3) VI. 1906. 151—154. Fig. 3. 
Tarsometatarsus. British Museum. Oligocaen (Pyrotherium- 
Schichten). Patagonia-Austral. 
Genus Crnschedula Ameghino Sinopsis geol.-pal. Segundo Censo Rep. 
Argent. Suppi. 1899. 9. 
Cruschedula revola Ameghino 1. c. 9; An. Mus. Nac. Buenos Aires (3) 
VI. 1906. 154—156. Tab. VIII. Fig. 42. 
Tarsometatarsus. Oligocaen (Guaranitico Patagonia, Basalteil 
der Pyrotherium-Schichten). Golfo di San Jorge, Patagonien. 
Genus inc. sed. Treleudytes Ameghino An. Mus. Nac. Buenos Aires 
(3) VI. 1906. 156. 
Treleudytes crassa Ameghino 1. c. 156 — 158. Fig. 4. 
Tarsometatarsus. La Piata Museum. Miocaen (Formatio patago- 
nica). Trelew, Patagonien. 
Subordo Ichthyornithiformes 
Gens Ichthyornithes 
Familia Ichthyornithidae 
Heilmann Fuglenes Afstamning 1916. 21 — 25. etc. Marsh Odon- 
tornithes, a Monograph of the extinct toothed birds of North 
America 1880. 119—183. Tab. XXI— XXXIV. 197—199. Shufeldt. 
Journ. Anat, and Phys. (7) XXVII. 1893. 336—342; Trans. Con- 
nect. Acad. Arts Sci. XIX. 1915. 16 — 20. Steiner Jen. Zeitschr. 
Natur w. LV. 1917. 302—304. 
Genus Ichthyornis Marsh Amer. Journ. Sci. (3) IV. 1872. 344. 
a Syn. (Colonosaurus) Marsh 1. c. (3) IV. 1872. 406. 
Graculavus Marsh 1. c. (3) III. 1872. 360. 
Ichthyornis agilis Marsh Amer. Journ. Sci. (3) V. 1873. 230. Odon- 
tornithes Monograph 1880. 197. 
Syn. Graculavus agilis Marsh 1. c. 1873. Shufeldt Trans. 
Connect. Acad. Arts Sci. XIX. 1915. 20. Tab. XIII. Fig. 91. 
Os metacarpi. Peabody-Museum, Yale Univ. Creta sup. (Niob- 
rara). Battle Creek (Kansas), N. Amerika. 
