A manual of zoologyWilliam Blackwood & Sons, 1878 - Zoology |
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Page 52
... Jurassic . Triassic . Permian . Carboniferous . 0330 30 0 7090000002000 09000DG26 Devonian , or Old Red Sandstone . Silurian . Cambrian . Huronian Laurentian 10. All the known formations are divided into three great. 52 MANUAL OF ZOOLOGY .
... Jurassic . Triassic . Permian . Carboniferous . 0330 30 0 7090000002000 09000DG26 Devonian , or Old Red Sandstone . Silurian . Cambrian . Huronian Laurentian 10. All the known formations are divided into three great. 52 MANUAL OF ZOOLOGY .
Page 53
... Silurian . ( Lower and Upper . ) 4. Devonian , or Old Red Sandstone . ( Lower , Middle , and Upper . ) 5. Carboniferous . ( Mountain - limestone , Millstone grit , and Coal - measures . ) 6. Permian . ( = the lower portion of the New ...
... Silurian . ( Lower and Upper . ) 4. Devonian , or Old Red Sandstone . ( Lower , Middle , and Upper . ) 5. Carboniferous . ( Mountain - limestone , Millstone grit , and Coal - measures . ) 6. Permian . ( = the lower portion of the New ...
Page 72
... Silurian rocks , remains of Foraminifera , some of which are apparently identical with existing forms , have been detected in various places , and it is not impossible that the large Silurian fossils known as Receptaculites and ...
... Silurian rocks , remains of Foraminifera , some of which are apparently identical with existing forms , have been detected in various places , and it is not impossible that the large Silurian fossils known as Receptaculites and ...
Page 85
... allied to the recent Cliona , are found from the Silurian rocks upwards . The vitreous or siliceous sponges appear to be exclusively inhabitants of the deeper parts of the ocean , and our knowledge of PROTOZOA : SPONGIDA . 85.
... allied to the recent Cliona , are found from the Silurian rocks upwards . The vitreous or siliceous sponges appear to be exclusively inhabitants of the deeper parts of the ocean , and our knowledge of PROTOZOA : SPONGIDA . 85.
Page 86
... Silurian rocks upwards , though great obscurity still rests upon the true nature and affinities of many of the fossils which have been referred to this group . The " Vitreous Sponges " are known to occur in the Paleozoic period , but ...
... Silurian rocks upwards , though great obscurity still rests upon the true nature and affinities of many of the fossils which have been referred to this group . The " Vitreous Sponges " are known to occur in the Paleozoic period , but ...
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Other editions - View all
Manual of Zoology ...: With a General Introduction on the Principles of Zoology Henry Alleyne Nicholson No preview available - 2015 |
Common terms and phrases
abdomen adult alimentary canal ambulacral amongst animal Annelides antennæ anus aperture appendages Arachnida articulated attached birds bivalve body bones Brachiopoda branchiæ branchial calcareous carapace cavity cephalothorax chitinous ciliated composed comprising consists contractile Crustacea Ctenophora developed disc distinct division dorsal embryo Eocene external extinct extremity feet females fins fishes Foraminifera fossil furnished gemmation genera genus gills head horny Huxley Hydrozoa incisors Insects integument intestine known labium larva larvæ legs limbs living locomotive males Mammals mandibles margin maxillæ membrane molars Mollusca mouth nervous system operculum organs ovum Owen pairs Paleozoic parasitic placed plates polypide polypites Polyzoa portion possess posterior present regarded reproductive Reptiles resembling respiratory Rotifera rudimentary Scolecida segments shell side Silurian single skeleton sometimes somites species spines stomach structure sub-order surface tail teeth tentacles termed thorax toes transverse tube upper usually valves ventral Vertebrates vesicle whilst wings Zoantharia zooids