Feathers, which evolved from modified reptilian scales, show up in the fossil record at the end of Period. This is the same Period where earlier true mammals also appear in the the fossil record and diversify, although they stay quite small and rodent like. Permian Jurassic Cretaceous Triassic

Q: Where on the tree did the vertebral column evolve? Group of answer choices B D A E C

A: Chordates are evolved from some deuterostomes, as they have similitudes in embryonic development,…

Q: what percentage of sea turtles were around during the jurassic period?

A: Introduction : Geological time scale gives a picture of the events which has taken place in the…

Q: Which statement about the Cambrian period is true? The first multicellular life appeared. Large land…

A: From the end of the preceding Ediacaran era 541;million years ago(mya) to the beginning of the…

Q: How can we explain that fossils of Mesosaurus, an extinct reptile that could not swim across open…

A: Mesosaurus, a ancient reptile that lived in freshwater amid the early Permian period. Its fossils…

Q: The extinction of dinosaurs left gaps in the early ecosystems on earth. Explain briefly the…

A: Evolution is change in the species over a period of time.

Q: Peramorphosis can occur when a feature, such as horns, _in a descendent than in its ancestor.

A: Heterochrony is the difference in time or pace of development as compared to an ancestor. Because…

Q: Fossil evidence that many saurapod dinosaurs had feathers suggests that ____. flight is an…

A: In the course of evolution Dinosaurs are the important part. So according to the fossils the size of…

Q: Why did giant dragonflies occur during the Carboniferous, but not now?

A: Fossils show that giant dragonflies and huge cockroaches were common during the Carboniferous…

Q: What was more important for the invasion of the land by vertebrates during the Paleozoic: becoming…

A: Vertebrates are those animals that are characterized by the presence of well distinguished backbone…

Q: Detail one of the historical periods (pre-Cambrian, Cambrian, or post-Cambrian) of animal kingdom…

A: The Geologic Time Scale (GTS) is a system of chronological arrangement or sequence of geologic…

Q: Which statement is true about fossilization? (A) (B) (C) (D) Only animals with backbones…

A: Fossilization is the process of preserving plant and animal remains over a period of time by means…

Q: The oldest fossils of human ancestors found in this area at 700,000 years old. andrewsaechus what is…

A: Every preserved bones, impression, or residue of a once-living thing from a previous geological…

Q: Pterosaur wings were... (Select all that apply) feathered skin supported by the fourth digit of the…

A: Question 1: Pterosaurs were a group of vertebrate flying reptiles. They had hair-like feathers which…

Q: Euparkeria lived during which time period * O Ordovician O Triassic O Cretaceous Paleocene Jurassic

A: There are different areas that are divided on the basis of life and the existence of different…

Q: Biodiversity & Evolution Virtual Lab (BIOL 1405)- Fall 2020 Domestic Platypus Gecko Alligator…

A: Phylogenetic tree is the most convenient hypothetical method of visually representing…

Q: To describe: The information that has been revealed by present methods about the successors of…

A: Dinosaurs thrived for more than 100 million years, and there is no certainty behind dinosaur…

Q: Silurian Rhudering nStage Ordovician Period Hirnantian Stage Rawtheya n Stage A. ascensus N.…

A: The data suggest that extinctions were brought on by climate change. This is believed to have had a…

Q: Discus evolution of Animal kingdom

A: The change of characteristics and evolving the new characteristics according to change in the…

Q: Dinosaurs represent one of the oldest groups of animals

A: In this question, we have to explain the dinosaurs belongs one of the oldest group of animals.

Q: Where on the tree did lungs (or lung derivatives) evolve? Group of answer choices D C A E B

A: Phylogenetic tree of chordates is given in the question. Phylogeny depicts the evolutionary…

Q: Based on the table, which is likely to have evolved earliest?

A: Evolution is a continuous process and we are still evolving. Evolution is nothing but adapting to…

Q: When an organism exhibits ____________ growth, its fecundity ________ with age, until senescence.…

A: Correct answer: Option b determinate, decreases is the correct answer because in determinate growth…

Q: Vertebrates Vertebrates Cartilaginous fish Scales and amniotic egg Land and water Bony fish ఈఅం Ray…

A:

Q: You decide that it is a eutherian rather than a marsupial. How do you know based on its…

A: A marsupial is a mammal that raises its newborn offspring inside an external pouch at the front or…

Q: Sea stars who are echinoderms exhibit; Spiral cleavage Radial Cleavage No distinct cleavage

A: Cleavage is a particular stereotyped pattern of cleavage present in early mitotic division which…

Q: Comparing the two phylogenies below, we can conclude that -Reptiles -Therians -Platypuses…

A: A phylogenetic tree is a diagram that shows how different species, life forms, or genes have evolved…

Q: Most fossils ___.   have been formed by exposure to air   are found in sedimentary layers of rock…

A: A fossil is anything of past geological age which was preserved. A fossil could be anything like…

Q: Why is animal evolution during the early Cambrian referred to as an “explosion”?

A: The evolution during the early Cambrian referred to as an explosion. Here we will discuss why it is…

Q: All of the following have been suggested as triggers for the Cambrian radiation of complex metazoans…

A: Metazoans are sponges with no digestive system, nervous system, or true tissues. They are sessile…

Q: Some researchers think that Australopithecus garhi may be an ancestor of early Homo because [Select]

A: Australopithecus is a genus of extinct primates similar to modern humans that have been discovered…

Q: ស អាព AMMOND Jurassic an Cretaceous

A: Ammonoids are extinct marine mollusc animals. These molluscs commonly called as ammonites. Their…

Q: but many of foraminifera forams and groups disappeared at the end of the Both large forms in the…

A: Foraminifera also known as forams for short are one celled protists having internal shells. These…

Q: According to the fossil record, what did the common ancestors of all tetrapods (four-limbed animals)…

A: Modern day tetrapods includes including whales, lizards, humans, and birds, and a number of other…

Q: Where on the tree did Bilateral Symmetry Evolve? O A O B O D O E

A: Few important points : Body symmetry is the similarity of parts in different regions and direction…

Q: Briefly describe why there was such hominoid diversity during the Miocene Era.

A: A geological era called the Miocene Epoch lasted from roughly 23 to 5.3 million years ago. The…

Q: Where on the tree did the amniotic egg evolve? Group of answer choices C A D E B

A: The given tree depicts the evolution of the different chordates as vertebrates, then jawed…

Q: The fossil record is biased toward preserving which type of organisms? Soft-bodied organisms Large…

A: Fossils are the preserved dead remnants of organisms that once were living. These fossils provide…

Q: In the figure below which letter is pointing to the Occipital Bun O E This is FOSSIL #1 below…

A: The major bone of the occiput and the most posterior cranial bone is the occipital bone. Like all…

Q: In the figure below which letter is pointing to the EYE BROW RIDGE This is FOSSIL #1 below Top views…

A: The skull is an important and anterior component of the axial skeleton that houses the components of…

Q: Describe the ecosystem and its importance to the animal kingdom. How ecosystem affects the role of…

A: The ecosystem is studied for understanding the interactions among organisms. And organism…

Q: Cite and explain the factors that led to an enormous bloom of animal diversity in the Paleozoic era.

A: Paleozoic era began somewhere around 541 million years ago and ended around 252 million years. The…

Q: Birds evolved from a group of bipedal dinosaurs known as theropods. True or false?

A: The question is asking whether birds evolved from a group of bipedal dinosaurs known as theropods.

Q: Which is NOT a characteristic of all chordates Group of answer choices phalangeal slits post-anal…

A: A chordate is a member of the Chordata phylum. At some point during their larval or maturity stages,…

Q: Make list of all animal life phylum's that are known (with name) Give description of recent phlya

A: Animals are eukaryotic, multicellular, species having a place with the Kingdom Animalia. Each animal…

Primate evolution

Primates are a relatively new species and first appeared in the fossil record nearly 55 million years ago. They may have originated as far back as the cretaceous period. Their fossils were observed in North America, Asia, and Europe. Long before the first monkeys and their prosimian relatives developed, most animal species thrived and died. The first primates did not exist until about 50-55 million years ago, even though the planet is 4.54 billion years old and the first life goes back at least 3.5 billion years. Dinosaurs had been extinct for 10 to 15 million years when this happened.