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File:Bone histology of Shuvuuia and Confuciusornis.png

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English: Long bone histology of a non-avialan dinosaur and a Mesozoic bird viewed with polarized microscopy
  • A) The femoral microstructure of the small alvarezsaurrid, Shuvuuia deserti (IGM 100–99)
  • B) Tibial histology of the Early Cretaceous avialan, Confuciusornis sanctus (IVPP V11521)

Comparision of both show well-vascularized bone owing to the presence of numerous primary vascular canals (large black structures), and woven fibered matrix characterized by oblong, randomly oriented osteocyte lacunae (numerous small black structures). Arrows point to growth lines in the form of a line of arrested growth (left) and an annulus (right).

Scale bars = 0.5 mm (A) and 0.1 mm (B)
Polski: Histologia kości długich dinozaura nienależącego do Avialae oraz mezozoicznego ptaka widziana przez mikroskop polaryzacyjny.
(A) Mikrostruktura kości udowej niewielkiego alwarezauryda Shuvuuia deserti (IGM 100-99) porównana z histologią kości piszczelowej (B) wczesnokredowego ptaka Confuciusornis sanctus (IVPP V11521).
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Was Dinosaurian Physiology Inherited by Birds? Reconciling Slow Growth in Archaeopteryx

(PLoS ONE 4(10): e7390. doi:10.1371/journal.pone.0007390.g001)
Author Erickson GM, Rauhut OWM, Zhou Z, Turner AH, Inouye BD, et al. (2009)
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current21:23, 21 August 2013Thumbnail for version as of 21:23, 21 August 20131,240 × 880 (1.5 MB)Jaybear (talk | contribs)cropping to get smaller whitespace (here in black); dimension size of scales added;
13:16, 10 October 2009Thumbnail for version as of 13:16, 10 October 20091,328 × 974 (2.36 MB)Ag.Ent (talk | contribs){{Information |Description={{en|1=Long bone histology of a non-avialan dinosaur and a Mesozoic bird viewed with polarized microscopy.<br />(A) The femoral microstructure of the small alvarezsaurrid, ''Shuvuuia deserti'' (IGM 100–99) is compared to the t

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