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Jawless fishes (Cyclostomata)

2009
Abstract Cyclostomata consists of two extant orders, Myxiniformes and Petromyzoniformes (1). Myxiniformes contains a single family, Myxinidae that includes 44 species in six genera (2) (hagAshes; Fig. 1). Petromyzoniformes also consists of a single family, Petromyzonidae that includes 41 species in six genera (3) (lampreys, Fig.
Shigeru Kuratani, Kuratani Shigeru
exaly   +2 more sources

I CYCLOSTOMATA, Rundmäuler

2014
Die kieferlosen Cyclostomata umfassen die beiden Taxa Myxinoida und Petromyzontida. Das auffallendste Strukturelement beider Gruppen ist der sog. Zungenapparat im Mundboden. Im Mundbereich sind Hornzahnchen ausgebildet (Abb. 181, 192). Bei beiden Taxa fehlen paarige Extremitaten und Gurtelbildungen vollig; die zeitlebens persistierende biegeelastische ...
Wilfried Westheide, Gunde Rieger
openaire   +2 more sources

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