Hele şükür bu biyoloji sözlüğünde var ürostil

) The small upturned posterior tip of the vertebral column, generally formed of fused vertebrae and associated elements (in

homocercal caudal fins of Teleostomi), 2) the fan-like series of bones articulating with the last true vertebra, including preural centra, ural centra, epurals and hypurals. Counted as one vertebra in some vertebral counts, not counted in others, 3) in fish larvae, a backwardly projecting process on the most posterior vertebra. The urostyle is usually included when counting vertebrae

AÇIKLAMA:
Bazı balıklarda ve hem denizde ve hem de karada yaşayan hayvanlarda omurganın mil, iğne veya kalem şeklinde olan veya bunlara benzeyen (kaynamış) ucu

SÖZCÜK ANLAMI:
urostyle

1) A styliform process forming the posterior extremity of the vertebral column in some fishes and amphibians.

http://public.onelook.com/?w=urostyle&last=urostyl&loc=spell...

1a) styliform
Having the form of, or resembling, a style, pin, or pen; styloid.

http://public.onelook.com/cgi-bin/cgiwrap/bware/dofindp.cgi

2) a long unsegmented bone that represents a number of fused vertebrae and forms the posterior part of the vertebral column of frogs and toads

http://www.m-w.com/cgi-bin/dictionary?book=Dictionary&va=uro...

3) the fused vertebrae at the posterior end of the spinal column of some fishes and tailless amphibians.

http://www.infoplease.com/dictionary/urostyle