File:Pneumatic Anhanguera santanae.jpg

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Summary

Description

Micro-computed tomographic (CT) scans and photograph illustrating external pneumatic openings and typical pneumatic architecture in the ornithocheirid pterosaur Anhanguera santanae (AMNH 22555).

  • Vertebral (a, b), carpal (c, d), and pelvic (e, f) elements are characterized by the presence of thin cortical bone and large internal cavities (b, d, f).
  • a, b, Mid-cervical (6th) vertebra in oblique craniolateral (a) and cutaway oblique craniolateral (b) views. Vertebral height = 5 cm. c, d, Left distal syncarpal in proximal (c) and cutaway proximal (d) views.
  • e, dorsal view of block with pelvic elements, sacral vertebrae, and posterior dorsal vertebrae. Black arrows indicate the location of pneumatic foramina on select vertebrae (e) and white arrows indicate both pneumatic foramina and internal pneumatic cavities on pelvic elements (f).
  • Asterisks on (e) delineate the location of the transverse section (dashed blue line) shown in (f).
  • f, Transverse CT scan transect through pelvic block, showing pneumaticity of the sacral neural spine, ilia and right pubis. Note the large pneumatic opening on the surface of the left ilium.
  • Scale bar (c–f) = 1 cm. li, left ilium; Ns, neural spine; Pf, pneumatic foramen; Pz, prezygapophysis; ri, right ilium; rp, right pubis; s3, sacral vertebra 3.
Date
Source Fig 1. in: Respiratory Evolution Facilitated the Origin of Pterosaur Flight and Aerial Gigantism. PLoS ONE 4(2):e4497, doi:10.1371/journal.pone.0004497
Author Leon P. A. M. Claessens, Patrick M. O’Connor, David M. Unwin

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This file was published in a Public Library of Science journal. Their website states that the content of all PLOS journals is published under the Creative Commons Attribution 4.0 license (or its previous version depending on the publication date), unless indicated otherwise.

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Date/TimeThumbnailDimensionsUserComment
current11:51, 12 May 2019Thumbnail for version as of 11:51, 12 May 20192,914 × 1,726 (1.98 MB)Gretarssonwrong annotation in subfigure “f” corrected: the bone beneath the right ilium cannot be the left pubis, it has to be the right pubis, as it is obvious from subfigure “e” (apparently there is no left pubis preserved in the specimen at all)
17:37, 20 March 2012Thumbnail for version as of 17:37, 20 March 20122,914 × 1,726 (1.83 MB)Ras67rearranged and cropped from the TIFF original
22:54, 2 March 2009Thumbnail for version as of 22:54, 2 March 20093,006 × 1,780 (2 MB)FunkMonk{{Information |Description=Micro-computed tomographic (CT) scans and photograph illustrating external pneumatic openings and typical pneumatic architecture in the ornithocheirid pterosaur Anhanguera santanae (AMNH 22555). Vertebral (a, b), carpal (c, d),

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