Old classification systems based on physical characteristics would most likely disagree with the relationship between birds and bats in the phylogenetic tree.
In old classification systems, birds and bats were often categorized together based on their shared characteristic of being flying animals. However, the phylogenetic tree shows that birds and bats are not closely related in terms of their evolutionary history. Birds belong to the class Aves, while bats belong to the class Mammalia. The tree suggests that birds and bats evolved independently to develop the ability to fly, making them analogous rather than homologous. This distinction would challenge the previous classification systems that relied primarily on superficial physical characteristics rather than genetic relatedness.
learn more about:- phylogenetic tree here
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