Bivalvia | ... | Unionoidea | Unionidae | Ambleminae | Quadrulini | Quadrulina | Quadrula
8 available nominal species synonyms (11 total synonyms)
Tritogonia verrucosa — Graf & Cummings (2007), Zhou et al. (2007), Tiemann et al. (2007), Watters et al. (2009), Jadhav & Jamkhedkar (2009), ... Graf & Cummings (2021), Porto-Hannes et al. (2021), FMCS (2021), Hopper et al. (2023), Hauck et al. (2023)
Quadrula verrucosa — Williams et al. (2008), Bogan (2010), Haag (2012), Zieritz et al. (2015), Lopes-Lima et al. (2017), ... Huang et al. (2019), Jeratthitikul et al. (2022), Neemuchwala et al. (2023), Keogh et al. (2024), FMCS (2025)
Widespread in the Interior and Gulf Coastal Plain, eastern North America.

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UAUC_3195. (16S: AY655079, COI: AY655024, go to Genbank) Conasauga River, below Mitchell Bridge, Whitfield Co. GA.
UAUC_2753. (ND1: AY158807, go to Genbank) Cumberland R., Scott Co., Tennessee.
UAUC_40. (ND1: AY158791, go to Genbank) Elk R., Limestone Co., Alabama.
FLMNH_438746 (QverCol013). (COI: PQ038621, ND1: PQ057614, go to Genbank) Llano River (30.658673, -99.3245).
FLMNH_439171 (SK19103). (COI: PQ038679, ND1: PQ057656, go to Genbank) Sipsey River (33.121505, -87.911094).
JFBM_23039 (SK19108). (COI: PQ038681, go to Genbank) St. Croix River (45.394149, -92.663579).
UF_438786 (QverRed015). (5.8S: MH362579, COI: MH633639, ITS1: MH362579, ND1: MH633591, go to Genbank) USA, Texas, Lamar County, Pine Creek, ~100 m upstream from CR906 (33.854656, -95.341305).
JBFMC_10005_1. (16S: PQ238831, COI: OK562099, go to Genbank) USA: Texas, Little Brazos River.
UF_441208. (5.8S: KT285701, COI: KT285657, ITS1: KT285701, go to Genbank) USA:Texas:Brown County:Colorado River downstream of Co. Rd. 229 (31.4831003, -99.0305955).