Reconstruction of Microbrachius dicki （Image source：Vladislav Egorov (3D model), Jaagup Metsalu (render)， CC BY-SA 4.0 ） Age Devonian（Emsian-Givetian） 393.3-382.7 Ma Taxonomy Kingdom: Animalia Phylum: Chordata Class: Placodermi Order: Antiarchi Family: Microbrachiidae Genus: Microbrachius Species: Microbrachius dicki Morphological description Microbrachius dicki is a small antiarch placoderm from the Orkney Islands of Scotland, typically measuring about 2–4 cm in length.