. Bulletins of American paleontology. Alaskan Bajocian ammonites: Westermann 371 A B C zone loc. coarse-spinose Vb median B/C fine - fascic. UPPER L543 - ââ ( i ) 2 3 ^»v (50 â HONELU A8 .K^ -^"e. 4 6^^^^ (40 ⦠-^ (6) -^ MIDDLE ZONE LOWER J ^"^N ^ A443-9 L285 F3%6 â'-'â4T ^ 3 40 6 ^^"r^-^ 1 â 6 - » 1â 40 ^ j Text-fig. 12. Successive morphotype distribution for Erycitoidrs hoivclli I White) according to three major costation types with intermediates. Sample sizes indicated of measured well preserved (above lines) and of fragmentary specimens (in parentheses below line) of t
. Bulletins of American paleontology. Alaskan Bajocian ammonites: Westermann 371 A B C zone loc. coarse-spinose Vb median B/C fine - fascic. UPPER L543 - ââ ( i ) 2 3 ^»v (50 â HONELU A8 .K^ -^"e. 4 6^^^^ (40 ⦠-^ (6) -^ MIDDLE ZONE LOWER J ^"^N ^ A443-9 L285 F3%6 â'-'â4T ^ 3 40 6 ^^"r^-^ 1 â 6 - » 1â 40 ^ j Text-fig. 12. Successive morphotype distribution for Erycitoidrs hoivclli I White) according to three major costation types with intermediates. Sample sizes indicated of measured well preserved (above lines) and of fragmentary specimens (in parentheses below line) of the Shell lots, and of the Geol. Survey lots from the E. hoivelli zonule (below line, open.) Typically, spinose variants are restricted to the lowest E. howcUi Zone, the E. boivrlli zonule, fas- ciculation becomes dominant in the Upper E. honxicUi Zone. But, because of the remaining " ' ' â " ' tinguished. remaining intensive overlap of the morphotvpe groups, no subspecies were dis- a) D). b) c) d) e). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Paleontological Research Institution (Ithaca, N. Y. ); Columbia University. Ithaca, N. Y. , Paleontological Research Institution [etc. ]
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Keywords: ., bookauthorpaleonto, bookcentury1800, bookdecade1890, bookyear1895
