| 词条 | Heterosteidae |
| 释义 |
| name = Heterosteidae | image = Heterosteidae.jpg | image_width = 240px | image_caption = Comparison of genera | fossil_range = Emsian to Givetian | regnum = Animalia | phylum = Chordata | subphylum = Vertebrata | infraphylum = Gnathostomata | classis = Placodermi | ordo = Arthrodira | subordo = Brachythoraci | subordo_authority = | familia = Heterosteidae | familia_authority = Jaekel, 1903 | subdivision_ranks = Genera | subdivision =
}}Heterosteidae is an extinct family of moderately large to giant, flattened, benthic arthrodire placoderms with distinctive, flattened, triangular skulls that are extremely broad posteriorly, but become very narrow anteriorly.[1] GeneraHerasmius{{main article|Herasmius}}Heterosteus{{main article|Heterosteus}}Yinostius{{main article|Yinostius}}References1. ^{{cite book|last=Denison|first=Robert|title=Placodermi Volume 2 of Handbook of Paleoichthyology|year=1978|publisher=Gustav Fischer Verlag|location=Stuttgart New York|isbn=978-0-89574-027-4|pages=65}} {{Taxonbar|from=Q15259423}} 4 : Arthrodires|Placoderm families|Early Devonian first appearances|Middle Devonian extinctions |
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