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anaspid

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Noun1.anaspid - extinct small freshwater jawless fish usually having a heterocercal tail and an armored head; of the Silurian and Devonian
agnathan, jawless fish, jawless vertebrate - eel-shaped vertebrate without jaws or paired appendages including the cyclostomes and some extinct forms
Anaspida, order Anaspida - extinct order of jawless vertebrates
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elegans shoal has preserved in a lens-like fish bed with rare ostracods and a few osteostracans (Tremataspis and Dartmuthia) occurring on the same bedding plane, while most of osteostracan and anaspid exoskeletons were buried under more agitated water conditions.
Sedimentation of the Himmiste-Kuigu fish bed (Ludlow of Estonia) and ... by Marss, Tiiu; Perens, Helle; Klaos, Tiiu / Proceedings of the Estonian Academy of Sciences: Geology
Affinity, classification and distribution of Silurian and lowermost Devonian birkeniid anaspid scales in the Circum-Arctic, Baltoscandia and Britain.
New thelodont (Agnatha) and possible chondrichthyan (Gnathostomata) ... by Marss, Tiiu; Wilson, Mark V.H.; Thorsteinsson, Raymond / Proceedings of the Estonian Academy of Sciences: Geology
Nostolepis striata Pander, Goinphonchus sandelensis (Pander), and a birkeniid anaspid (Marss 1992).
Andreolepis (Actinopterygii) in the upper Silurian of Northern ... by Marss, Tiiu / Proceedings of the Estonian Academy of Sciences: Geology
 
 
 
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