Parabrachidontes
''Parabrachidontes'' is a genus of small Fresh water, freshwater and Brackish water, brackish-water mussels in the family Mytilidae. The genus was first described in 2023 to accommodate three Southeast Asian species that form a distinct Monophyly, monophyletic clade within the Mytilidae, closely related to ''Mytella'', ''Perna (bivalve), Perna'', and ''Arcuatula''. Etymology ''Parabrachidontes'' derives its name from the parallel evolution of radial ribs on the shell's exterior and small scalloped features (crenules) along the inner upper margins of certain species' shells, traits also observed in species belonging to the existing mussel genus ''Brachidontes''. It is derived from the Greek prefix para- ("near") and ''Brachidontes'', reflecting its Phylogenetics, phylogenetic proximity to ''Brachidontes'' while being morphologically and ecologically distinct. Species The genus includes three species: * ''Parabrachidontes amnicus'' Tan et al., 2023: a newly described species with ...
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