Biology, 27.08.2019 20:30 laurabwhiddon

Science under modern classification systems, in what clade will you find birds?

Answers: 1

Show answers

Answers

According to modern systems of classification, birds are descendants of Theropoda dinosaurs. These dinosaurs are called Paraves. From this clade, a node is made during the evolution. The new clade is called Aves. This is where birds are classified.

Answer from: elgallo5399

Birds evolved from reptiles in Mesozoic era and their ancestors are small dinosaurs called theropods while they belong to class aves.

Further Explanation

Birds as dinosaurs

They are evolved in Mesozoic era either from thecodonts or theropods. These are two possibilities.

Thecodonts hypothesis

These are earlier reptiles which gave rise to dinosaurs (arboreal dinosaurs called pterosaurs and crocodiles) in Mesozoic era. Their body was covered with scales.

Theropods

They were bipedal carnivorous dinosaurs having sharp teeth to tear their prey. Earlier they were non-flying and gave rise to small flying dinosaurs. Their fossil study reveals that they were similar to birds.

Birds as reptiles

Taxonomic study reveals that birds are descendants of reptiles and fossil of Archaeopteryx lithographica is the evidence.

Archaeopteryx lithographica

Archaeopteryx was first fossils of birds that was found in Bavarian quarry by a German naturalist. It was crow sized, bipedal, with small snout having sharp teeth, strong muscles and large furcula.

Archaeopteryx Vs modern birds

Modern birds possess larger brain with enlarged visual center as compared to archaeopteryx. Modern birds had evolved advance neural system for flight.

Aves

It is class of vertebrate birds having characteristics like bill, wishbone, pygostyle and furcula.

Answer details

Subject: Biology

Level: High school

Key words

Birds as dinosaurs

Thecodonts hypothesis

Theropods

Birds as reptiles

Archaeopteryx lithographica

Archaeopteryx Vs modern birds

Aves

Learn more to evaluate

Answer from: Quest

The answer is a i believe

Answer from: Quest

where is the scientific experiment?

Other questions on the subject: Biology

Biology, 22.06.2019 00:00, babs2019

Ineed the answer asap. in order to be considered alive, an organism must simultaneously possess the characteristics of homeostasis, heredity, cells, reproduction, and

Answers: 1

continue

Biology, 22.06.2019 01:40, warnene17

Elephants in the savanna regions of africa dig holes in dried up river beds to reach water lying just below the surface. these holes provide drinking water for other animals as well. so, without the elephants, many animals might otherwise die from lack of water during the dry season. the location in which the elephants live is an example of a/n and the role they play in creating water holes is an example of a a) ecosystem; habitat b) community; niche c) habitat; niche d) niche; habitat

Answers: 1

continue

Biology, 22.06.2019 06:40, Weser17

Under the soviet system, the government a. controlled all forms of communication. b. allowed newspapers to print whatever they wanted. c. controlled editorials but not the reporting of news. d. encouraged access to a wide variety of news sources. select the best answer from the choices provided a b c d

Answers: 1

continue

Biology, 22.06.2019 07:30, shelbellingswo

1. seamount a raised footwall block between normal fault creates this 2. syncline break between rocks where a hanging wall rises relative to a footwall 3. hot spring on rolling hills, this a dip between hills 4. volcanic neck created when a block with hanging walls slips down between normal faults 5. caldera underwater volcano that never reaches above sea level 6. horst natural hot water on earth's surface containing many minerals 7. graben underwater volcano whose top is eroded flat by waves 8. crater less than a mile in diameter; looks like a bowl at the top of a volcano 9. guyot magma that filled the central vent that remains after the volcano has eroded 10. reverse fault over 1 mile in diameter; looks like a bowl over a volcano