科研之友
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摘要
A new tristichopterid, dagger Bruehnopteron murphyi n. gen. n. sp., is described from the uppermost Givetian, Middle Devonian, from the Northern Simpson Park Range in central Nevada, USA. A complete morphological description is provided. The new tristichopterid is placed between dagger Jarvikina and dagger Heddleichthys in recently published phylogenetic diagrams of tristichopterid sarcopterygians. Shape of lacrimal and jugal and the longest preorbital region of all tristichopterids are unique features of the new form. The new tristichopterid has enlarged premaxillary %26apos;pseudofangs%26apos; and anterior dentary fangs, features of %26apos;moderately derived%26apos; tristichopterids.
- 出版日期2012
