Fishes of the World |
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Výsledky 1 - 3 z 61.
Strana 17
In dispersal zoogeography , distributional patterns are postulated to be largely
the result of dispersal events and each taxon is generally postulated to have had
an identifiable center of origin , in theory at least ( e . g . , Darlington ( 1957 ) ...
In dispersal zoogeography , distributional patterns are postulated to be largely
the result of dispersal events and each taxon is generally postulated to have had
an identifiable center of origin , in theory at least ( e . g . , Darlington ( 1957 ) ...
Strana 176
Dorsal fin origin over or behind pelvic fin insertion but well ahead of anal origin ;
dorsal adipose fin present except in Rhadinesthes decimus ; ventral adipose fin
present in many , in front of anal fin ; no scales ; barbel on chin ; dorsal fin rays 9
...
Dorsal fin origin over or behind pelvic fin insertion but well ahead of anal origin ;
dorsal adipose fin present except in Rhadinesthes decimus ; ventral adipose fin
present in many , in front of anal fin ; no scales ; barbel on chin ; dorsal fin rays 9
...
Strana 445
The origin of chordates — a methodological essay . In M . R . House ( Ed . ) , The
origin of major invertebrate groups . Systematic Association ... Jefferies , R . P . S .
1981b . Fossil evidence on the origin of the chordates and echinoderms .
The origin of chordates — a methodological essay . In M . R . House ( Ed . ) , The
origin of major invertebrate groups . Systematic Association ... Jefferies , R . P . S .
1981b . Fossil evidence on the origin of the chordates and echinoderms .
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Obsah
INTRODUCTION | 1 |
PHYLUM CHORDATA | 21 |
Subdivision Halecomorphi | 86 |
Autorské práva | |
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Časté výrazy a frázy
absent adipose fin adults Africa anal fin ANTARCTIC ARCTIC areas Atlantic Australia barbels body bone brackish branched branchiostegal rays Bull CAPRICORN caudal fin characters CIRCLE classification closely compressed continuous cycloid derived developed Distribution dorsal and anal dorsal fin eastern eight elongate EQUATOR extending eyes Family fin rays fishes five fossil four freshwater genera e.g. genus gill openings given gives head Indian known lack lateral line living lower Marine maxilla Maximum length mouth nine North occur oceans Order organ origin Pacific pairs pectoral fin pelvic fins placed plates present primarily primitive probably rarely recognized region relationships relatively Rosen scales seas separate seven short side similar single snout soft rays South America southern species spines SUBFAMILY Suborder swim bladder tail teeth teleosts Three genera TRIBE tropical usually vertebrae western Zealand Zool