Contributions to the Cretaceous paleontology of the Pacific by Timothy William Stanton

By Timothy William Stanton

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Extra info for Contributions to the Cretaceous paleontology of the Pacific Coast. The fauna of the Knoxville beds

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It is probable that during the geological past certain C. groups rnight have existed that were sirnilar only in outward aspect to the abovementioned modern taxa. An indirect indication of the probable existence of such groups is found in the recent discovery of green prokaryotes , keyed out in the group Prochlorophyta , that differ from C. in their pigment composition. 1t is unclear so far whether these organisms should be excluded from C. C. are represented in the fossil record by remains of three types.

G. if they literature all the genera with which a potentially were established on the basis of vegetative shoots new genus is to be compared. The bibliographic with fructifìcations). Some parataxa may partially search of the comparable genera is extremely time correspond to eutaxa. consuming. The available reference books These two parts of the system are supplemented with the alphabeticallist of all genera , every genus (Boureau , 1964一 1975; Nemejc , 1959一 1975; being indexed with letters F- and N-containing Osnovy paleontologii , 1963a ,b; Seward , 1898symbols.

Kry 1. (c); d , e, fìeld sketches of ]acutophyton (d) and Kussiella (e); f-h , reconstructions of Inzeria toctogulii Kry 1. (j), Gymnosolen ramsayi Steinm. (g) and Patomia ossica Kry1. (h); i , preservation modes of hormogonial (above) and mastigocladian (below) cyanobacteria in algal-bacterial mats;j , section of Glenobotrydion aenigmatis J. W. Schopf with modifìed mucilage sheath outside and collapsed cell content inside; k decay of cell (stippled or in black) and mucilage sheath (broken line) of coccoid cyanobacteria in unicellular state (above) and during incomplete division 軒 Division Bacteriophyta (Bacteria 吋 aeobacteria , mycoplasms (bacteria lacking walls) , actinomycetes , myxobacteria and spirochaetes.

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