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Helicoidea   is a diverse group of land snails with a global distribution. While much is known regarding the relationships of helicoid taxa, comparatively little is known about the evolution of the mitochondrial genome in the superfamily. We sequenced two complete mitochondrial genomes from    Praticolella   mexicana    Perez, 2011 representing the first such data from the helicoid family   Polygyridae  , and used them in an evolutionary analysis of mitogenomic gene order. We found the mitochondrial genome of    P.   mexicana    to be 14,008 bp in size, possessing the typical 37 metazoan genes. Multiple alternate stop codons are used, as are incomplete stop codons. Mitogenome size and nucleotide content is consistent with other helicoid species. Our analysis of gene order suggested that   Helicoidea   has undergone four mitochondrial rearrangements in the past. Two rearrangements were limited to tRNA genes only, and two involved protein coding genes.

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Two complete mitochondrial genomes from    Praticolella   mexicana    Perez, 2011 (  Polygyridae  ) and gene order evolution in   Helicoidea   (  Mollusca  ,   Gastropoda  )