Anaspida

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Anaspida

[ə′nas·pə·də]

(paleontology)

An order of extinct fresh- or brackish-water vertebrates in the class Agnatha.

Mentioned in ?

Heterocercal Fin

References in periodicals archive ?

Silurian and earliest Devonian birkeniid anaspids from the Northern Hemisphere.

An updated stratigraphic and environmental framework for the distribution of Silurian vertebrates on Gotland

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 taphonomy of the Phlebolepis elegans Pander (Thelodonti) shoal/Himmiste-Kuigu kalakihi sedimentoloogia Eesti Ludlow's ja Phlebolepis elegans Pander (Thelodonti) parve tafonoomia

and sometimes with the anaspid Rhyncholepis parvula Kiaer.

Revision of Silurian vertebrate biozones and their correlation with the conodont succession/Siluri selgroogsete biotsoonide revisjon ja nende korrelatsioon konodontide jarjestusega

Other associated fossils include anaspids, heterostracans, graptolites, eurypterids, nautiloids, and conodonts.

New thelodont (Agnatha) and possible chondrichthyan (Gnathostomata) taxa established in the Silurian and Lower Devonian of the Canadian Arctic Archipelago/Uued telodontide (Agnatha) ja voimalike kohrkalade (Gnathostomata) taksonid Kanada Arktika Silurist ja Alam-Devonist

Unlike the predominantly longitudinal orientation of the scales on most of the body, at least some of the scales covering the pharyngobranchial region have an oblique long axis, being aligned anterodorsally to posteroventrally (Figs 5A, B, 6D) in a manner that suggests that the branchial pouches or row of branchial openings was also oblique, as it is in anaspids (Blom et al.

Anatomy of the Silurian thelodont Phlebolepis elegans Pander/Siluri telodondi Phlebolepis elegans Pander anatoomia