A treatise on zoology . Fig. 258. Eusihcnopteron Foordi, Whiteaves ; restored. (After Whiteaves, from A. S. Woodwani.)d, cleitlirum (clavicle); fr, frontal; , clavicle ; inn, mandible ; mx, maxilla ; op, opercular ;pa, parietal; scl, supraclavicle; sop, subopereular ; st, supratemporal ; slio, suborbital; x,cheek-plate. COELA CA NTH INI 287 Division COELACANTHINI. These remarkaljle fish jippeur first in the Devoniuii ;uul persistin the Cretaceous rocks. They are very imiform in structurethroughout this long period, and are clearly marked «>tt fiom. Undino gido, Eg.; Lowit Jurass
A treatise on zoology . Fig. 258. Eusihcnopteron Foordi, Whiteaves ; restored. (After Whiteaves, from A. S. Woodwani.)d, cleitlirum (clavicle); fr, frontal; , clavicle ; inn, mandible ; mx, maxilla ; op, opercular ;pa, parietal; scl, supraclavicle; sop, subopereular ; st, supratemporal ; slio, suborbital; x,cheek-plate. COELA CA NTH INI 287 Division COELACANTHINI. These remarkaljle fish jippeur first in the Devoniuii ;uul persistin the Cretaceous rocks. They are very imiform in structurethroughout this long period, and are clearly marked «>tt fiom. Undino gido, Eg.; Lowit Jurassic, Dorset. Restoration, oniittiii;; and sujiraclaviclf,and sliowing tlie calcified air-liladiler. (From A. S. Woodward, Hrlt. Mus. Cut!.) related Teleostomes by well-defined characters. Huxley [228],Miinster, Wellburn [484], AVinkler, Willemoes-Suhm, Keis [;^>50,354], and other authors have given us avery complete description of their notochord appears to have beenpersistent and unconstricted ; at all events,no trace of centra is found. The tail isdiphycercal, and subdivided into thieelobes, of wliich the central one projectsfar beyond the epi- and hypochordal lobes,and has no ossified endoskeletal neural arches, haemal arches, andpleural ribs are well developed and arches are fused to the spines, andto these are articulated in the caudal regiona corresponding series of somactidia orradials, supporting the lepidotrichia of theepi- and hypochordal fins (Fig. 259). Unhke Avhat occurs in allTeleostomes excep
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishe, booksubjectzoology
