ScienceJohn Michels (Journalist) 1933 |
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Page 32
... Stage 6. Basal Amphibian . Upper Devonian and ganoids . Here we see three stages in the evolution of the mobile pectoral paddles , as figured by Dr. Tate Regan , of the British Museum of Natural History . C J fish - like characters ...
... Stage 6. Basal Amphibian . Upper Devonian and ganoids . Here we see three stages in the evolution of the mobile pectoral paddles , as figured by Dr. Tate Regan , of the British Museum of Natural History . C J fish - like characters ...
Page 35
... Stage 13. The Duckbill Platypus and the Spiny Ant- eater of Australia . Both these forms lay large reptilian eggs , have reptile - like oviducts and many reptilian features in skull and skeleton , also a relatively primitive brain ...
... Stage 13. The Duckbill Platypus and the Spiny Ant- eater of Australia . Both these forms lay large reptilian eggs , have reptile - like oviducts and many reptilian features in skull and skeleton , also a relatively primitive brain ...
Page 180
... stages are passed through after the worms have completed the egg and free - living larval stages and after they have entered upon the sedentary mode of life in a calcareous tube . In each stage the function of the organs of the ...
... stages are passed through after the worms have completed the egg and free - living larval stages and after they have entered upon the sedentary mode of life in a calcareous tube . In each stage the function of the organs of the ...
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