Can Plants Be Thought Of As A Missing Link Between, Say, Algae And Animals?
periodical article
The Quarterly Review of Biology
Published Past: The University of Chicago Press
https://www. jstor .org/stable/2824990
The trouble of "missing links" over the years since Darwin's On the Origin of Species is analyzed in the perspective of our increased knowledge of the fossil tape and our changing concepts of evolution, geology, and biology. The history of application of development theory to the fossil tape and the consequences of the conflict of categorical, essential classification and evolutionary continuity are examined, as they chronicle to the "naive" idea of "missing links." Transitions between taxonomic categories are treated at two levels: the infraspecies-species level, and the supraspecies level. In the latter category case analyses of transitions within and between the major groups of metazoans and metaphytes are fabricated, with special attending to the show of origins of groups in the fossil tape. Throughout, the impacts on evolutionary theory of changes in knowledge and interpretations of the record of the history of life are considered. The problem of the existence of linkages and phylogenies at the species and generic levels has been much reduced during the last 1 hundred and twenty years. How this reduction supports or denies Darwin's concepts of phyletic gradualism is however a matter of estimation of the show. At familial and college levels, the institution of linkages between categories has been much less successful, and decreasingly so at each successive college level. Under the very all-time circumstances, however, morphological and stratigraphically graded transitions between classes and subclasses have been plant. At the level of phyla and higher categories, any information on transitions equally far as the fossil records is concerned is essentially non-existent. Adequately standard patterns of transitions betwixt high categories can be established on the basis of the optimal cases, and these point up the continuing problems in evolutionary theory as being the interrelationships and integration of micro-evolutionary and macro-evolutionary processes.
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Source: https://www.jstor.org/stable/2824990
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