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  1. Fred Ruhe

    Eocypselus geminus sp. nov., Eocypselus grandissimus sp. nov, and Eocypselus paulomajor sp. nov.

    Aegialornithidae Lydekker, 1891 Primapus Harrison & Walker, 1975 Typespecies Primapus lacki Harrison, 1975 Emended diagnosis Furcula with robust scapi clavicularum and extremitas omalis lacking a laterally protruding facies articularis acrocoracoidea; processus acrocoracoideus of coracoid...
  2. Fred Ruhe

    Eocypselus geminus sp. nov., Eocypselus grandissimus sp. nov, and Eocypselus paulomajor sp. nov.

    Eocypselus sp. Referred specimens NMS.Z.2021.40.113 (Fig. 1h; partial furcula, right coracoid, right scapula lacking caudal end, partial sternum, left os carpi ulnare); collected in 1992 by M. Daniels (original collector’s number WN 92750A). NMS.Z.2021.40.120 (Fig. 2o–r; right quadrate)...
  3. Fred Ruhe

    Eocypselus geminus sp. nov., Eocypselus grandissimus sp. nov, and Eocypselus paulomajor sp. nov.

    Eocypselus grandissimus, sp. nov. Holotype NMS.Z.2021.40.119 (Fig. 1m; a few vertebrae, both coracoids, both scapulae, cranial portion of sternum, distal end of right humerus, proximal end of left humerus, partial left carpometacarpus, distal end of left femur, one pedal phalanx; a distal left...
  4. Fred Ruhe

    Eocypselus geminus sp. nov., Eocypselus grandissimus sp. nov, and Eocypselus paulomajor sp. nov.

    Eocypselus paulomajor, sp. no Holotype NMS.Z.2021.40.118 (Fig. 1l; partial furcula, left coracoid, left ulna); collected in 1997 by M. Daniels (original collector’s number WN 97987). Differential diagnosis Distinctly larger than E. vincenti and E. geminus (Table 1); furthermore, differs from...
  5. Fred Ruhe

    Eocypselus geminus sp. nov., Eocypselus grandissimus sp. nov, and Eocypselus paulomajor sp. nov.

    Eocypselus geminus, sp. nov. Holotype NMS.Z.2021.40.116 (Fig. 1e; partial rostrum and mandible, axis, furcula (broken into three pieces), right scapula, right coracoid in a piece of matrix, partial sternum, partial left humerus, left radius, proximal portion of right radius, right phalanx...
  6. Fred Ruhe

    Eocypselus geminus sp. nov., Eocypselus grandissimus sp. nov, and Eocypselus paulomajor sp. nov.

    SYSTEMATIC PALAEONTOLOGY Aves Linnaeus, 1758 Apodiformes Peters, 1940 Eocypselidae Harrison, 1984 Eocypselus Harrison, 1984 Typespecies Eocypselus vincenti Harrison, 1984 Emended diagnosis Characterized and distinguished from other Apodiformes by the combination of the following features: axis...
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