Abas wittii

Abas is an extinct genus of diatoms consisting of only one known species: Abas wittii. Originally observed as a fossil genus classified with diatom spore forms under the name Syringidium.^[1] Abas was observed to be live from the Eocene to Oligocene epoch appearing in tropical sites.^[1][2]

Abas wittii Temporal range: Eocene-Oligocene, 56–23 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Abas wittii specimen from the Eocene North Atlantic
Scientific classification
Domain:	Eukaryota
Clade:	Sar
Clade:	Stramenopiles
Phylum:	Ochrophyta
Clade:	Diatomeae
Class:	Mediophyceae
Order:	Hemiaulales
Family:	Hemiaulaceae
Genus:	†Abas R.Ross & P.A.Sims, 1980
Species:	†A. wittii
Binomial name
†Abas wittii (Grunow) R.Ross & P.A.Sims