Ostreacea was named by Rafinesque (1815) [m. kosnik taxon no: 6115]. It is extant.

It was corrected as Ostreoidea by Ward (1992), Ride et al. (1999), Squires (1999), Coan et al. (2000), Todd (2001), Cooper (2002), Stilwell et al. (2004), Bieler and Mikkelsen (2006), Lam and Morton (2009), Nevesskaja (2009), Bouchet et al. (2010), Carter et al. (2011), Bolton and Portell (2013), Squires (2018), Moneer et al. (2024) and Schnetler et al. (2024).

It was assigned to Prionodesmacea by Glenn (1904); to Schizodonta by Rivera (1957); to Ostreoida by Squires (1999) and Todd (2001); to Pterioida by Vokes (1980), Maxwell (1992) and Bieler and Mikkelsen (2006); to Mytiloida by Nevesskaja (2009); to Ostreina by Newell (1965), Adegoke (1977), Dockery (1982), Gliozzi and Malatesta (1983), Squires (1984), Ward and Blackwelder (1987), Squires (1987), Beu et al. (1990), Ward (1992), Ride et al. (1999), Coan et al. (2000), Cooper (2002), Stilwell et al. (2004) and Lam and Morton (2009); to Ostreidina by Carter et al. (2011); and to Ostreida by Bouchet et al. (2010), Bolton and Portell (2013), Squires (2018), Moneer et al. (2024) and Schnetler et al. (2024).