
depidium

depidium (seey, 'footpath') adim neopterigian ray-finn machhali kaa ack vilupt vansh haye. pahali varnit khoj "dee" kaa ack udaaharan thaa. politam, "ingland key jurassic tata parr lime regis key nichale lias mein paaya gayaa (leach 1822). "depidium" antim tricic aur jurassic kaal mein rahata thaa.
upasthiti.
depidium" kii vibhinn prajaatiyan lambi theen, aur sabhi mein andakar seey laker nikat-vrittakar shareer thaa. twacha motee, rumboid, ganoid (tamchini jaisi) taraju seey dhaki hui thee. abb taka paaee jaane vaali sabse chhoti prajaati "dee" haye. norikam.
khopadi koo asthi twachiya plates key saath bakhtarband kiya gayaa thaa, joe vishesh roop seey kakshiya kshetra mein prachur matra mein they. inn haddiyon mein aniyamit tubercle hotey they. chhote pectoral aur shroni pankh, vistaarit prishthiya aur gudaa pankh key saath poonchh key saath ack karyatmak ikai kaa gathan karate hain. poonchh chhoti aur motee thee, joe machhali key tairate samay achaanak disha mein badalaav key liye shakti pradaan karati thee.
depidium" kaa oopari jabada chalane yogya thaa aur munh seey baahar nickle sakata thaa, jisase ack vyaapak aakar kaa aakar badey shikaar koo pakadane mein saksham hoe jaataa thaa.
vitaran.
"depidium" jyaadaatar europe key jurassic samudron mein rahata thaa, joe tethys mahasagar kaa ack paridhiya mahadvipiya shelf samudra thaa. holzmadden, germany, temple grafton, warwickshire, ingland aur lime regis, dorset, ingland mein ullekhaniya khoj kii gaee haye.
vyavhaar.
majboot aur nukile dention seey pataa chalata haye kii "depedium" durophagus thaa, joe kathor-shelled aksheruki jeevon, jaise kii shahatoot aur samudri archin koo khaata thaa.

