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Diacrocanthidium
From Williams et al., 2017:
[Diacrocanthidium, Deflandre and Foucher, 1967, p. 3
Acritarch genus, according to Fensome et al., 1990
Although the "type species" was not validly transferred by Deflandre and Foucher (1967), the generic name Diacrocanthidium was validly published by these authors, since it is based on a previously validly published species name (I.C.N. Article 40.3).
Type species: originally as Palaeostomocystis echinulata, Deflandre, 1937b (pl.11 (al. pl.8), fig.9)] ; Diacrocanthidium echinulatum, Loeblich and Loeblich, 1970
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Original description: [Deflandre and Foucher, 1967]: (Translation: Stover and Evitt, 1978):
Microorganism of organic material with an ellipsoidal theca more or less constricted equatorially, ornamented with spines or short horns except in the equatorial zone. Frequently absent at one part of the theca, determined by a circular opening (archeopyle), not differentiated marginally.
[Diacrocanthidium, Deflandre and Foucher, 1967, p. 3
Acritarch genus, according to Fensome et al., 1990
Although the "type species" was not validly transferred by Deflandre and Foucher (1967), the generic name Diacrocanthidium was validly published by these authors, since it is based on a previously validly published species name (I.C.N. Article 40.3).
Type species: originally as Palaeostomocystis echinulata, Deflandre, 1937b (pl.11 (al. pl.8), fig.9)] ; Diacrocanthidium echinulatum, Loeblich and Loeblich, 1970
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Original description: [Deflandre and Foucher, 1967]: (Translation: Stover and Evitt, 1978):
Microorganism of organic material with an ellipsoidal theca more or less constricted equatorially, ornamented with spines or short horns except in the equatorial zone. Frequently absent at one part of the theca, determined by a circular opening (archeopyle), not differentiated marginally.