Acastoidea
Encyclopedia
Acastoidea is a superfamily of trilobites from the order Phacopida
, suborder Phacopina
. This superfamily is divided into two families, Acastidae
and Calmoniidae
. This superfamily is distinguishable from the Phacopidae
in that eyes are closer to the glabella and that the glabella has lobes, unlike the genera in Phacopidae.
Phacopida
Phacopida is an order of trilobite that lived from the Ordovician to the Devonian. It is made up of a morphologically diverse group of related suborders....
, suborder Phacopina
Phacopina
Phacopina is a suborder including many trilobites.-External links:* - various photos, some of Phacopina...
. This superfamily is divided into two families, Acastidae
Acastidae
Acastidae is a family of trilobites in the order Phacopidae, suborder Phacopina, superfamily Acastoidea, containing the following genera:*Acastava*Acaste*Acastella*Acastellina*Acastocephala*Acastoides*Acastopyge...
and Calmoniidae
Calmoniidae
Calmoniidae is a family of trilobites from the order Phacopida, suborder Phacopina, superfamily Acastoidea.It contains the following genera:*Anchiopella*Andinacaste*Australocaste*Australops*Awaria*Bainella*Belenops...
. This superfamily is distinguishable from the Phacopidae
Phacopidae
Phacopidae is a family of trilobites of the order Phacopida, including the following genera:*Acernaspis*Acuticryphops*Adastocephalum*Afrops*Ainasuella*Altaesajania*Ananaspis*Angulophacops*Arduennops...
in that eyes are closer to the glabella and that the glabella has lobes, unlike the genera in Phacopidae.