Acastella

Acastella is an extinct genus of trilobite.^[1] The genus contains six species being A. herberti, A. jacquemonti, A. prima, A. roualti, A. tanzidensis and A. tiro.

Acastella Temporal range: Upper Silurian to Lower Devonian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Clade:	†Artiopoda
Class:	†Trilobita
Order:	†Phacopida
Family:	†Acastidae
Genus:	†Acastella Reed, 1925
Species
A. spinosa (Salter, 1864) (type) synonyms Phacops downingiae var. spinosa, Acaste downingiae spinosa, Acastava macrocentrus A. granulosa Hollard, 1963 A. heberti (Gossellet, 1888) A. jacquemonti Hollard, 1963 A. patula Hollard, 1963 A. prima Tomczykowa, 1962 A. roualti (De Tromelin & Lebescomte, 1875) A. tanzidensis Hollard, 1963 A. tiro (R. & E. Richter, 1954)