File:Lutavis holotype.jpg

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English: Lutavis platypelvis, gen. et sp. nov. from the early Eocene London Clay of Walton-on-the-Naze, Essex, UK (holotype, NMS.Z.2021.40.37). a Pygostyle in lateral view. b, c Thoracic vertebrae. d, e Left coracoid in dorsal (d) and ventral (e) view. f, g Partial right coracoid in ventral (f) and dorsal (g) view. h, i Partial left scapula in lateral (h) and medial (i) view. j Partial right scapula in medial view. k, l Proximal end of right humerus in cranial (k) and caudal (l) view. m Fragmentary distal end of left humerus in cranial view. n, o Distal portion of right ulna in caudal (n) and distal (o) view. p Proximal end of left ulna in cranial view. q Distal end of left ulna in ventral view. r, s Proximal portions of both radii. t, u Partial right carpometacarpus in ventral (t) and dorsal (u) view. v Proximal and distal ends of left carpometacarpus in ventral view. w Both ossa carpalia ulnaria. x Phalanges proximales digiti majoris (one fragmentary). y Phalanx distalis digiti majoris. z, aa Pelvis in dorsal (z) and lateral (aa) view. bb–ee Right tarsometatarsus in dorsal (bb), plantar (cc), distal (dd), and proximal (ee) view. ff Pedal phalanx with fossilised integument of the foot pad; the arrow indicates an enlarged detail. gg Pedal phalanges. acr acromion, cdd condylus dorsalis, cdp crista deltopectoralis, cdv condylus ventralis, css crista spinosa synsacri, fac foramen acetabuli, fii foramen ilioischiadicum, flg plantar flange, fns foramen nervi supracoracoidei, fvp foramen vasculare proximale, itg fossilised integument, pex processus extensorius, pha pedal phalanx, pnf pneumatic foramen, ppc processus procoracoideus, prj ventrally-directed projection of caudal portion of facies articularis humeralis, sul hypotarsal sulcus, tbc, tuberculum carpale, tbd tuberculum dorsale, tpa tuberculum praeacetabulare. The scale bar equals 10 mm
Date
Source New species from the early Eocene London Clay suggest an undetected early Eocene diversity of the Leptosomiformes, an avian clade that includes a living fossil from Madagascar
Author Gerald Mayr & Andrew C. Kitchener

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30 November 2022

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