Lichida is an order of typically spiny trilobite that lived from the Furongian to the Devonian period.

[1] Their exoskeletons often have a grainy texture or have wart or spine-like tubercles.

The sections of the pygidia are leaf-like in shape and also typically end in spines.

[3] As mentioned earlier, the order Lichida is divided into two families.

[4]Echinolichas Terataspis Conolichas Otarozoum Apatolichas Lyralichas Amphilichas Pseudotupolichas Platylichas Autoloxolichas Allolichas Arctinurus Lichas Dicranopeltis Uralichas Dicranogmus Oinochoe Metopolichas Acanthopyge Trochurus Ceratarges Radiolichas Borealarges Richterarges Hemiarges Akantharges Uripes Hoplolichas Hoplolichoides Lichakephalus Lichkephalina Eoacidaspis Acidaspidina Acidaspidella