. The causes and course of organic evolution; . well to link all into a continuous organicchain. But while most of the simplest groups are mainlyfresh-water, or still retain some representatives there, diverginglines from some of these early took on a marine existence,assumed a fixed red or claret color, and i)roduced a great wealtli 324 Causes and Course of Organic Evolution of genera, but failed to evolve higher organisms than them-selves. In the diagram that forms Fig. 11 the phylogenetic affini-ties and derivations are set forth graphically. If now, inconnection with the table already give
. The causes and course of organic evolution; . well to link all into a continuous organicchain. But while most of the simplest groups are mainlyfresh-water, or still retain some representatives there, diverginglines from some of these early took on a marine existence,assumed a fixed red or claret color, and i)roduced a great wealtli 324 Causes and Course of Organic Evolution of genera, but failed to evolve higher organisms than them-selves. In the diagram that forms Fig. 11 the phylogenetic affini-ties and derivations are set forth graphically. If now, inconnection with the table already given (p. 305), the algaebe divided into a simpler and a more complex or advancedgroup, that we may term the Archseophyceae and the Neophy-ceae, we find that 221 genera and 2809 species that are fresh-water, and 30 genera ^^ith 99 species that are marine, areincluded in the former group; while 62 genera and 1502 speciesthat are fresh-water, and 623 genera ^^th 5570 species thatare marine, belong to the latter. Comment on such a factis Fresh-water or Forms M MtlNi: FntlMS
Size: 1571px × 1590px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bo, bookcentury1900, bookdecade1910, bookidcausescourseofor00macf
