. Bulletins of American paleontology. 382 Bulletin 238 « O. 10 "T" 20 "T 30 LENGTH (mm) Text-figure 33.—Plots of length/width measurements of Spirifer chap- pelcnsls, n. sp. taken from growth varices of five large pedicle valves (USNM locality 90+5), illustrating variation in the proportions of these shells during ontogeny and a general trend toward truncation of the lateral extremities in later growth stages. duced eight other complete shells and more than 40 incomplete specimens and disarticidated valves. There are two superior specimens from USNM locality Please note t
. Bulletins of American paleontology. 382 Bulletin 238 « O. 10 "T" 20 "T 30 LENGTH (mm) Text-figure 33.—Plots of length/width measurements of Spirifer chap- pelcnsls, n. sp. taken from growth varices of five large pedicle valves (USNM locality 90+5), illustrating variation in the proportions of these shells during ontogeny and a general trend toward truncation of the lateral extremities in later growth stages. duced eight other complete shells and more than 40 incomplete specimens and disarticidated valves. There are two superior specimens from USNM locality 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. ]
Size: 1470px × 1701px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorpaleontologicalresearchinstitutionit, bookcentury1900
