File:Origin of Vertebrates Fig 053.png

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English: Fig. 53.—Comparison of Cartilaginous Skeleton of Limulus and Ammocœtes.


A, Diagram of cartilaginous skeleton of Limulus. Soft cartilage, entapophysial ligaments, deep black; branchial bars simply hatched; hard cartilage, lateral trabeculæ of entosternite, netted; Ph., position of pharynx.


B, Diagram of cartilaginous skeleton of Ammocœtes. Soft cartilage, sub-chordal cartilaginous bands, deep black; branchial basket-work (first formed part), simply hatched; hard cartilage, cranio-facial skeleton, trabeculæ, parachordals and auditory capsules, netted; Inf., position of tube of infundibulum (old œsophagus).


(All references in this work to Ammocœtes or Petromyzon appear to refer to the European Brook Lamprey, now called Lampetra planeri.)
Date
Source The Origin of Vertebrates. https://archive.org/details/originofvertebra1908gask
Author Walter Holbrook Gaskell.


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current13:49, 10 November 2013Thumbnail for version as of 13:49, 10 November 20131,014 × 1,443 (128 KB)Keith Edkins (talk | contribs)Try again!
13:48, 10 November 2013Thumbnail for version as of 13:48, 10 November 20131,014 × 1,443 (129 KB)Keith Edkins (talk | contribs)Cleaned
13:45, 10 November 2013Thumbnail for version as of 13:45, 10 November 20131,014 × 1,443 (129 KB)Keith Edkins (talk | contribs)== {{int:filedesc}} == {{Information |Description={{En|Fig. 53.—Comparison of Cartilaginous Skeleton of Limulus and Ammocœtes. A, Diagram of cartilaginous skeleton of Limulus. ''Soft cartilage'', entapophysial ligaments, deep black; branchial bars...

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