Trichodinium rhomboidale
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?rhomboidale Górka, 1965, p.301–302, pl.1, figs.6a–b ex Sarjeant, 1967b, p.255–256. Holotype: Górka, 1965, pl.1, figs.6a–b; Jan du Chêne et al., 1986a, pl.121, figs.14–15. Originally Palaeoperidinium (name not validly published), subsequently (and now) Trichodinium?. Questionable assignment: Sarjeant (1967b, p.256). The name Palaeoperidinium rhomboidale was not validly published in Górka (1965) since the generic name Palaeoperidinium was not validly published until 1967. Williams et al. (1998, p.616) accepted Sarjeant's (1967b) indirect reference to Górka (1965) as indication of a type (I.C.N. Article 40.3). Lentin and Williams (1976, p.111) also proposed this name, as a new combination. Age: early Kimmeridgian.
Parent: Trichodinium