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单词 protamnion
释义

> as lemmas

protamnion
protamnion n. [after German Protamnion ( Haeckel Natürliche Schöpfungsgeschichte (1868) xix. 505)] Zoology Obsolete (Haeckel's name for) a hypothetical common evolutionary ancestor of the amniotes (mammals, birds, and reptiles).
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1876 E. R. Lankester tr. E. Haeckel Hist. Creation II. xxii. 289 The name protamnion we have given to the primary form of the three higher classes of Vertebrate animals, out of which the Proreptilia and the Promammalia developed as two diverging branches.
1879 tr. E. Haeckel Evol. Man II. 134 This unknown common parent-form is the Primitive Amnion Animal (Protamnion). In external appearance the Protamnion was most probably an intermediate form between the Salamanders and the Lizards.
extracted from proto-comb. form
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as lemmas
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