Abacum
- Citations total:
- 4
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Author - title
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| details | Ordovician | Nd | Servais,T. An annotated bibliographical review of Ordovician acritarchs | 1997 | |
| details | Nd | Nd | Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. | 1990 | |
| original | Middle Cambrian | Tremadocian | Spain | Fombella,M.A. Acritarchs of the Oville Formation, Middle Cambrian-Tremadocian age, Province of Leon, Spain. | 1978 |
| details | Middle Cambrian | Tremadocian | Spain | Steemans,P. Miospore evolution from the Ordovician to the Silurian. | 2000 |