Acastoides

Acastoides is an extinct genus of trilobite that lived during the Silurian and Devonian. It has been found in Bolivia, France, Morocco, Poland, Turkey and the United Kingdom.

Acastoides Temporal range: 428–392 Ma PreꞒ Ꞓ O S D C P T J K Pg N Middle Silurian (Wenlock) to Devonian (?Eifelian)
Acastoides zguilmensis, Devonian, Morocco
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Clade:	†Artiopoda
Class:	†Trilobita
Order:	†Phacopida
Family:	†Acastidae
Genus:	†Acastoides Delo, 1935
Species
A. henni (R. Richter, 1916) (type) = Acaste henni A. constricta (Salter, 1864) synonyms Phacops (Acaste) downingiae constrictus, P. constrictus, Acaste (Acastoides) constrictus[1] A. acutilobata (Knod, 1908) A. gamonedensis A. haddadi Chatterton, Fortey, Brett, Gibb & McKellar, 2006 A. insolitus Wolfart, 1968 A. maura Alberti, 1969 A. paeckelmanni R. Richter & E. Richter, 1939 A. poschmanni Basse & Müller, 2016[2] A. zguilmensis Chatterton, Fortey, Brett, Gibb & McKellar, 2006

Distribution

• A. constricta is found in the Silurian of the United Kingdom (Wenlock, Woolhope Shale, Worcestershire, Malvern).^[3]

Taxonomy

Species previously assigned to Acastoides

• A. verneuili = Calmonia terrarocenai^[4]