No remains of true Reptiles, Birds, or Quadrupeds have as yet
been certainly detected in the Carboniferous deposits in any part
of the world. It should, however, be mentioned, that Professor
Marsh, one of the highest authorities on the subject, has described
from the Coal-formation of Nova Scotia certain vertebrae which
he believes to have belonged to a marine reptile (_Eosaurus
Acadianus_), allied to the great _Ichthyosauri_ of the Lias. Up to
this time no confirmation of this determination has been obtained
by the discovery of other and more unquestionable remains, and
it therefore remains doubtful whether these bones of _Eosaurus_
may not really belong to large Labyrinthodonts.
LITERATURE.
The following list contains some of the more important of the
original sources of information to which the student of Carboniferous
rocks and fossils may refer:--
(1) 'Geology of Yorkshire,' vol. ii.; 'The Mountain Limestone
District.' John Phillips.
(2) 'Siluria.' Sir Roderick Murchison.
(3) 'Memoirs of the Geological Survey of Great Britain and Ireland.'
(4) 'Geological Report on Londonderry,' &c. Portlock.
(5) 'Acadian Geology.' Dawson.
(6) 'Geology of Iowa,' vol. i. James Hall.
(7) 'Reports of the Geological Survey of Illinois' (Geology and
Palaeontology). Meek, Worthen, &c.
(8) 'Reports of the Geological Survey of Ohio' (Geology and
Palaeontology).
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