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hemal spine

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he·mal spine

the middle point on the underside of the hemal arch of a vertebra in lower vertebrates.
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References in periodicals archive
A Principal Component Analysis was performed onto the caudal series (from the 20th element backward), using the configuration including the hemal spine. The first two components account for the 84.5% of the total variance (Fig.
Morphological variation in the seahorse vertebral system/ Variaciones morfologicas en el sistema vertebral del Caballo de Mar
In many teleosts caudal rays ate attached also to the parhypural (PH) and to the hemal spine of the preural 2 (PU2).
Organizacion esqueletal de la paleta caudal en Syngnathus abaster (Osteichthyes, Syngnathidae)
E, epurals; Hs, hemal spines; Na, neural arches; H, hypurals; DL, dorsal lobe; VL, ventral lobe; PH, parahipural; PBR, principal branched rays; PSR, principal simple rays.
Development of the Vertebral Column and Caudal Skeleton in Prochilodus lineatus Larvae under Laboratory Conditions/ Desarrollo de la Columna Vertebral y del Esqueleto Caudal en Larvas de Prochilodus lineatus en Condiciones de Larvicultura Intensiva
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