Aron-Ra
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You already did that yourself, and even admitted that the only explanation youve ever seen for the elimination of Pongidae was cladistic.Aron-Ra said:The technical term is the cladistic one. The Linnaean term is just the old standard. Its still dominant, but it was officially overturned only a decade or so ago, and the new arrangement is definitely not a popular one, so it will take a while longer before cladistics become the norm.Cirbryn said:Please support your claim that the Linnaean system was officially overturned in favor of the cladisitc system.
Yes I have, lots of things in fact, and so have you. For example, its listed this way on your own cited web page.I think youre still seeing it this way:
CATARHINNI
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|_| Propliopithecoidea
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|_| Hominoidea
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|_| CercopithecoideaThats the way it is under the Linnaean system, as presented by your own cited web page. You havent provided anything that suggests otherwise.
Well, "superfamily" doesn't really mean anything. But that would mean that they were descended from monkeys, and are monkeys still.You can argue all you want that Hominoidea evolved from Propliopithecoidea, and that the Propliopiths were "monkeys". All it would mean if youre correct is that Hominoidea evolved out of Propliopithecoidea and established its own superfamily.
And what do you mean, "if I am correct"? Your own citations say I am, and nothing you've posted yet says otherwise.
Give it up? Youre giving me an ultimatum?! You act as though youve countered or at least adequately addressed my points in this discussion. I wonder why?As things currently stand under the Linnaean system, no Hominoids are Propliopiths, nor are they Cercopiths. So show how the Linnaean system is no longer the standard taxonomic system, or give it up.

Currently, under the Linnaean system, no humans are in Pongidae either, or vice versa. And perhaps I should clarify that the Linnaean system is still the standard at this moment, but isn't going to be the standard much longer, now that cladistics is gaining acceptance. I don't want to get tripped up in your word-games again. But otherwise, your request is fair enough. At a glance, I found these:
"A recent trend in biology since the 1960s, called cladism or cladistic taxonomy, requires taxa to be clades. cladists argue that paraphyly is as harmful as polyphyly. The idea is that monophyletic groups can be defined objectively, in terms of common ancestors or the presence of synapomorphies. In contrast, paraphyletic and polyphyletic groups are both defined based on key characters, and the decision of which characters are of taxonomic import is inherently subjective. Many argue that they lead to "gradistic" thinking, where groups advance from "lowly" grades to "advanced" grades, which can in turn lead to teleology. In Evolutionary studies, Teleology is usually avoided because it implies a plan that cannot be empirically demonstrated.
Going further, some cladists argue that ranks for groups above species are too subjective to present any meaningful information, and so argue that they should be abandoned. Thus they have moved away from Linnaean taxonomy towards a simple hierarchy of clades."
--Wikipedia; Cladistics
"The Linnaean hierarchy is under fire these days by a group of taxonomists (people who specialize in classifying organisms) who are developing an even more explicitly genetic classification approach: Cladistics or phylogenetic classification. Their premise is that the only solidly defensible classification in the Linnaean system is the species. Every other taxon (level in the Linnaean hierarchy) is kind of subjective, depending a lot on the judgment of taxonomists who specialize in one group or another of organisms."
--Dr. Christine M. Rodrigue, Department of Geography, California State University
Linnaean definitions have important nomenclatural consequences. Because Linnaean definitions are based on the Linnaean categories, categorical assignment plays an important role in the application of taxon names. For the modern biologist, however, association with one of the Linnaean taxonomic categories is not the most relevant aspect of meaning. As a result of the intellectual revolution brought about by the acceptance of an evolutionary world view, taxon names now have at least implicit evolutionary meanings. In other words, a taxon name has an association not only with one of the Linnaean categories, but also with a particular part of the evolutionary history of life. For anyone who thinks that taxonomy ought to represent something about evolutionary history, this second aspect of meaning is not trivial. This situation explains why biologists often express annoyance about proposals that would change the implicit phylogenetic meanings of taxon names.
--Kevin de Queiroz; Consequences of (Problems with) Linnaean Definitions, Biological Nomenclature in the 21st Century
For a long time biologists classified organisms into what seemed like natural groups using a system devised in the 18th century by the naturalist Linneaus. This is referred to as the Linnaean system of classification (or as Linnaean taxonomy), and is the source of such familiar categories as kingdom, phylum, and class, (though not genus and species). In the Linnaean system organisms that share certain key features are classified together into groups. These groups are in turn defined according to the features of the organisms they contain. For example, in the Linnaean system birds are placed in Class Aves. All birds, and as far as is known nothing else, have feathers, so in the Linnaean system Class Aves could be defined as all organisms with feathers, and any organism with feathers would be, by definition, a bird.
The Linnaean system is still used in some branches of biology. But in other branches, and particularly in vertebrate paleontology, it is rapidly being replaced by a system referred to as cladistics or phylogenetic systematics.
--University of Wisconsin Department of Geology & Geophysics
Mammal classification has been through several iterations since Carolus Linnaeus initially defined the class. Many earlier ideas have been completely abandoned by modern taxonomists, among these are the idea that bats are related to birds or that humans represent a completely distinct group. Competing ideas about the relationships of mammal orders do persist and are currently in development. Most significantly in recent years, cladistic thinking has led to an effort to ensure that all taxonomic designations represent monophyletic groups. The field has also seen a recent surge in interest and modification due to the results of molecular phylogenetics.
--Nationmaster Encyclopedia
"In 1983, as University of California Berkeley graduate students, they developed the idea while analyzing data on lizard phylogeny. Their work dispensed with Linnaean ranks and defined their named lizard groups to be explicitly equated with the clades indicated by their phylogenies. Several years later, de Queiroz and Gauthier published a series of papers introducing a framework for a system of phylogenetic taxonomy and nomenclature. Since then, a number of authors have used phylogenetic nomenclature and rank-free classifications. In vertebrate systematics, for instance, evolutionarily meaningful clades such as Tetrapoda, Amniota, and Archosauria are replacing the traditional ranked groups (such as the non-monophyletic Class Reptilia) in textbooks, classrooms, museums,and the scientific literature.
Few dispute that the Linnaean system has worked admirably for 250 years. The question is whether it can continue its successful run much longer. In his 1758 edition of Systema Naturae, Linnaeus listed 4400 species known to science. As the number of known species grew over the years, it became harder to accommodate them with the standard seven categorical ranks, and taxonomists had to invent new ones, like subfamily, superorder, and tribe. Today there are 1.5 million described species, perhaps millions more undescribed , and still more extinct taxa being discovered by paleontologists. The limited number of ranks of the Linnaean system, Yale Universitys Michael Donoghue says, is just not going to cut it....Were not able to do justice to our current knowledge of phylogeny with the present system. In addition, the molecular revolution of recent years has given systematists enormous new datasets of genetic information. To morphological characters from bones, skin, organs, and limbs, todays systematists have added the As,Ts,Gs, and Cs of DNA sequence data. Sophisticated computer programs that crunch the molecular data have produced a flood of phylogenies, many showing novel relationships and prompting reevaluation of traditional classifications."
--Ecology and Evolutionary Biology; University of Connecticut
Say hello to the cladist. Monkeys are a paraphyletic taxon. Old world monkeys and new world monkeys are monophyletic. If people are going to keep using the term monkeys (without the qualifiers old world and new world), then we need to include apes in the taxon monkey.
--Anthropology, Evolution and Science blog
I didn't have much time to look for these, being very busy today. So I hope this will suffice at least for the moment.
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