ostracoderm sentence in Hindi
Sentences
Mobile
- Ostracoderms existed in two major groups, the more primitive cephalaspids.
- This allowed placoderms to lift their heads, unlike ostracoderms.
- The first fossil fishes that were discovered were ostracoderms.
- Ostracoderms have heads covered with a bony shield.
- Other ostracoderms, such as the Galeaspida are now known to have a paired olfactory organ.
- Later, about 420 million years ago, the jawed fish evolved from one of the ostracoderms.
- Early fish from the fossil record are represented by a group of small, jawless, armored fish known as ostracoderms.
- Like other ostracoderms, " Ateleaspis " had a head shield similar to that of " Cephalaspis ".
- Current phylogenetic analysis using a large number of characteristics now place pteraspidomorphs as the sister-group of all other ostracoderms and the gnathostomes.
- One of the earliest known armoured agnathan ( " ostracoderm " ) vertebrate, " Arandaspis ", dates from the Middle Ordovician.
- This sea remained in place during the early Paleozoic era and would come to be inhabited by creatures like brachiopods, ostracoderms, and trilobites.
- It was long assumed that pteraspidomorphs and thelodonts were the only ostracoderms with paired nostrils, while the other groups have just a single median nostril.
- In 1890 paleontologist Charles D . Walcott found broken pieces of the bony plates embedded in the skin of Middle Ordovician jawless fish known as ostracoderms.
- The ostracoderm armour consisted of 3 5 mm polygonal plates that shielded the head and gills, and then overlapped further down the body like scales.
- The evidence of phylogeny, however, suggests the lamprey lineage diverged much earlier from other vertebrates, rather than arising from among the " ostracoderms ".
- It is now accepted that the precursors of the jawed vertebrates are the long extinct bony ( armoured ) jawless fish, the so-called ostracoderms.
- After the appearance of jawed fish, most ostracoderm species underwent a decline, and the last ostracoderms became extinct at the end of the Devonian period.
- After the appearance of jawed fish, most ostracoderm species underwent a decline, and the last ostracoderms became extinct at the end of the Devonian period.
- Other fossils found alongside the ostracoderms lived articulated brachiopods, conodonts, gastropods, ostracods, pelecypods, sponges, trilobites, and trace fossils left by worms.
- These characteristics are, however, likely to be general for either the vertebrates or, at any rate, for the ensemble of all ostracoderms and the gnathostomes.
ostracoderm sentences in Hindi. What are the example sentences for ostracoderm? ostracoderm English meaning, translation, pronunciation, synonyms and example sentences are provided by Hindlish.com.