2011年8月28日日曜日

魚の分類(14) Watson (1937)

Bergが13番目に示したのが,Watson (1937)の分類です.

ワトスン(D. Watson)は,Acanthodii(=棘魚類)に関するモノグラフで,以下の分類を提案しています.

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branch AGNATHA
 order † HETEROSTRACI
 order † ANASPIDA
 order † OSTEOSTRACI
 order CYCLOSTOMATA
branch GNATHOSTOMATA

Grade and class † APHETOHYOIDEA. A complete gill slit between the mandibular and hyoid arches.
 order † ACANTHODII
 order † ARTHRODIRA
 order † ANTIARCHI
 order † PETALICHTHYIDA
 order † RHENANIDA

Grade PISCES. The gill slit between the mandibular and hyoid arches reduced to spiracle or closed completely.
 Class CHONDRICHTHYES
 Class OSTEICHTHYES

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*1: Watson, D. M. S., 1937, The Acanthodian fishes. Phil. Trans., series B, vol. 228, London. 1937, p. 125, 142.

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