. Bulletins of American paleontology. Middle Ordovician Bryozoa of Tennessee: Marintsch Table 11.—Quantitati\e data. Mesotrypa sp. A. Sec Key to Abbreviations, p. 33, for expl Character Range No. Meas. 018 10 018 10 003 10 003 10 008 10 008 10 010 10 010 10 024 10 024 10 008 10 008 10 No. Spec. ZCD ZWT MCD (endo/ht) MCD (endo/wth) AD (lani/e.\o) .AD (lani/endo) CB TOTAL CB TOTAL CB TOTAL CB TOTAL CB TOTAL CB TOTAL . . . . . . .06-. 12 .06-. 12 . . for M. spinosa. however, his figured specimen, pi. 17. fig. 12, is not dissimilar from the pre
. Bulletins of American paleontology. Middle Ordovician Bryozoa of Tennessee: Marintsch Table 11.—Quantitati\e data. Mesotrypa sp. A. Sec Key to Abbreviations, p. 33, for expl Character Range No. Meas. 018 10 018 10 003 10 003 10 008 10 008 10 010 10 010 10 024 10 024 10 008 10 008 10 No. Spec. ZCD ZWT MCD (endo/ht) MCD (endo/wth) AD (lani/e.\o) .AD (lani/endo) CB TOTAL CB TOTAL CB TOTAL CB TOTAL CB TOTAL CB TOTAL . . . . . . .06-. 12 .06-. 12 . . for M. spinosa. however, his figured specimen, pi. 17. fig. 12, is not dissimilar from the present species. The small sample size of Mesotrypa sp. A further precludes a more precise taxonomic assignment. Distribution.—Locality CB. Studied Mflrena/.—Hypotypes CB 114A-9-A (M) [USNM 431801], CB 116A-5-A (M) [USNM 431802]. Genus PERONOPORA Nicholson, 1881 Type species.—Chaetetes decipiens Rominger, 1866. Peronopora mundula (Ulrich. 1893) Plate 2, Figures 2-3 Homoirypettu mundula Ulrich. 1893. p. 232. 233, fig. 12; Brown. 1965, p. 980. 981, pi. Ill, figs. 4-6. Description—Zoaria mainly ramose, some encrust- ing. Zooecia initiated throughout inner and outer en- dozone. Zooecial cavities polygonal in cross-section in endozone, subrounded within inner exozone, becom- ing increasingly polygonal zooecially outwards. Zooe- cia curve very shallowly in endozone, curve greatly accelerated near endozonal/exozonal transition with or without a distinct zooecial bend at exozonal base or lower exozone, or intersect colony surface at right an- gles. Zooecial walls thicken markedly at base of exo- zone or in lower exozone and formed of distinct V-shaped laminae. Walls commonly thicken and thin zooecially outwards. Occasionally a dark line separates zooecial walls. Endozonal walls even to slightly irreg- ular, parallel. No median layer in zoarium. Diaphragms in endozone planar, thin, perpendicular to zooecial walls, spaced at two to several zooecial cavity diam- eters apart in inne
Size: 1057px × 2363px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorpaleontologicalresearchinstitutionit, bookcentury1900
