Discussion of Phylogenetic Relationships
Prior to 1994, Tomopeatinae was considered to be a subfamily of Vespertilionidae, but Sudman et al. (1994) and Simmons (1998) demonstrated that Tomopeas is more closely related to molossids than to vespertilionids. Monophyly of Molossidae (including Tomopeatinae) is stongly supported by morphological data (Simmons, 1998; Simmons and Geisler, 1998).
Phylogenetic relationships within Molossidae have been investigated using morphometrics (Freeman, 1981), discrete morphological characters (Legendre, 1984, 1985; Hand, 1990), allozymes (Sudman et al., 1994), and cytochrome b gene sequences (Sudman et al., 1994). Trees and classifications derived from these studies are largely incongruent, but most agree that Molossinae is monophyletic.
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