Reconstruction of Microbrachius dicki  （圖片來源：Vladislav Egorov (3D model), Jaagup Metsalu (render)，採用  CC BY-SA 4.0  授權） 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. The