''Phalacroma'' is a genus of

trilobite Trilobites (; meaning "three-lobed entities") are extinction, extinct marine arthropods that form the class (biology), class Trilobita. One of the earliest groups of arthropods to appear in the fossil record, trilobites were among the most succ ...

in the order

Agnostida Agnostida are an order of extinct arthropods which have classically been seen as a group of highly modified trilobites, though some recent research has doubted this placement. Regardless, they appear to be close relatives as part of the Artiopod ...

, which existed in what is now the

Czech Republic The Czech Republic, also known as Czechia, and historically known as Bohemia, is a landlocked country in Central Europe. The country is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the south ...

. It was described by Hawle and Corda in 1867, and the type species is ''Phalacroma bibullatus'', which was originally described as a species of '' Battus'' by Barrande in 1846.Available Generic Names for Trilobites
P.A. Jell and J.M. Adrain.

References

Agnostidae Trilobites of Europe Agnostida genera {{agnostida-stub