sˈɑːszɪnskəmˈædʒ, ˈɛt ˈæl., tˈuː θˈaʊzənd sˈɪkstiːn nˈoʊn fɹʌmðɪ ˈɜːli dʒjʊɹɹˈæsɪk, saɪnmjˈʊɹɹiən ˈeɪdʒd tʃˈɑːɹməθ mˈʌdstoʊn fɔːɹmˈeɪʃən ʌv dˈoːɹsɛt, ˈɪŋɡlənd, ɪz kˈɜːɹəntli kənsˈɪdɚd təbi wˈʌn ʌvðɪ ˈoʊldɪst mˈɛmbɚz ʌvðə fˈæmɪli.
Soszyńska-Maj, et al., 2016 Known from the Early Jurassic, Sinemurian aged Charmouth Mudstone Formation of Dorset, England, is currently considered to be one of the oldest members of the family.