. Bulletin. Natural history; Natuurlijke historie. Fig. 23. Elements of the pes of Psittacothenum multijragum. a) Proximal view of ectocuneiform, navicular and entocuneiform, AMNH 16560. b) Proximal view of ectocuneiform, mesocuneiform and entocuneiform, AMNH 16560. c) Proximal (dorsal) view of partial right astragalus, TMM 41364-1. d) Distal (ventral) view of right astragalus, TMM 41364-1. e) Proximal (dorsal) view of (?)left tuber calcanei, TMM ) Distal (ventral) view of (?)left tuber calcanei, TMM 41364-1. Abbreviations: asf = astragalar fibular facet; ass = astragalar sustentacula
. Bulletin. Natural history; Natuurlijke historie. Fig. 23. Elements of the pes of Psittacothenum multijragum. a) Proximal view of ectocuneiform, navicular and entocuneiform, AMNH 16560. b) Proximal view of ectocuneiform, mesocuneiform and entocuneiform, AMNH 16560. c) Proximal (dorsal) view of partial right astragalus, TMM 41364-1. d) Distal (ventral) view of right astragalus, TMM 41364-1. e) Proximal (dorsal) view of (?)left tuber calcanei, TMM ) Distal (ventral) view of (?)left tuber calcanei, TMM 41364-1. Abbreviations: asf = astragalar fibular facet; ass = astragalar sustentacular facet; caa = calcaneoas- tragalar facet; lc = lateral crest of trochlea; mc = medial crest of trochlea; mt = medial tibial facet of trochlea; sa = interarticular sulcus (= sulcus astragali); st = superior trochlear facet and trochlear fossa; ump = ventromedial process. Scale is 4 cm long. cave facet for articulation with the medial face of the mesocuneiform. Laterally and distally the entocuneiform bears a small, convex facet for articulation with the proximomedial corner of the second metatarsal. Proximally, it bears a deep, dorsoventrally concave facet for articulation with the navicular. Distally, it bears a narrow, deep, dorsoventrally concave, and slightly convex mediolaterally, facet for metacarpal one. Mesocuneiform The mesocuneiform is a relatively small bone, short proximodistally and slightly widened transversely. It is shallow, but is about twice as deep on the lateral side as on the medial side and thus comes to a point ventromediodistally. The prox- imal face is one large facet, slightly concave in both directions, for articulation with the navicular. The distal face forms a large facet for articulation with the second metatarsal. This face is in general shallowly concave in both directions, but medial to the midline on the dorsal border is a slightly convex protuberance that fits into a corresponding groove on the second metatarsal. The medial face. Please note
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Keywords: ., bookcentury1900, bookcollectionbiodiv, booksubjectnaturalhistory
