| 21. | The exact phylogenetic placement of eutriconodonts within Mammaliaformes is also uncertain.
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| 22. | Morphometric and phylogenetic analyses confirm the taxonomic validity of this material.
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| 23. | The phylogenetic tree of the Coronin family it is quiet broad.
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| 24. | The phylogenetic proximity of beneficial and pest species complicates the project.
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| 25. | The phylogenetic relationships of " Sclerocephalus " are uncertain.
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| 26. | Some phylogenetic studies of lydekkerinids have found them to be polyphyletic.
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| 27. | Its phylogenetic position within the subfamily has not yet been resolved.
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| 28. | Phylogenetic trees are graphical models of the relationships between various species.
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| 29. | Phylogenetic placement of " Hydrostachys " is particularly problematic.
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| 30. | A 2007 phylogenetic analysis suggests that this superfamily contains four families:
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