What environmental factors might have led to the evolution of the tetrapod limb?     An ice age     The evolution of a marine superpredator which forced animals to seek refuge on land     High sea levels with abundant marine habitat     The development of widespread shallow swampy environments with abundant plant material to be maneuvered around.

Q: Monotremes all have what unifying feature? Arthropod-like pincers Placenta Ventral pouch Ability to…

A: Mammals belonging to the order Monotremata are known as monotremes. The Monotremata are the oldest…

Q: Which of the following is the most likely organism to fossilize and be found in the fossil record?…

A: Step 1 Fossils are remains, tracks, impressions, or traces of organisms that existed in the past.…

Q: Dinosaurs that lived with tyrannosaur rex what were their? Like any duck bills, hardosaur,…

A: Tyrannosaurus Rex or T. Rex are carnivorous dinosaur species that were found to have been lived in…

Q: Members of which of the following classes are endothermic, amnionic tetrapods? --all of the classes…

A: Endothermic creatures are those which are able to regulate the temperature of their bodies. They…

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: What is some evidence from phylogenetictree of hollowed bones and tufted feathers

A: The objective of the question is to understand the evidence from the phylogenetic tree of hollowed…

Q: What characteristics is the ancestor of tetrapods thought to have had? Choose all that apply

A: Tetrapods  Tetrapods are the group of animals that have four legs. It the major group of animal and…

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: Animal Kingdom Do not possess a backbone Possess a backbone Asymmetric, Bilateral symmetry, Four…

A: *Invertebrates are the animals do not posses backbone. *Vertebrates are the animals that posses…

Q: Scales of modern teleosts differ from the ancestral state in that they _____.     are thicker and…

A: They are the members of actinopterygians.  They are marked by the body rays on their fins.…

Q: What is the only difference between a fish and tetrapod

A: The change in the heritable characteristics of the species across many generations is called…

Q: Bilateral symmetry is a(n) A B C synapomorphic ancestral claws derived analogous - trait for the…

A: A phylogenetic tree is a diagram demonstrating the evolutionary connections between a group of…

Q: Acrocanthosaurus what is physical description compare to tyrannosaur rex differences of shape, size…

A:

Q: Taxon Unit Kingdom Phylum Taxon Name Animalia Key features Have a notochord at some point in life…

A: Carl Linnaeus gave hierarchy of classification which included seven ranks -  Kingdom Phylum Class…

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: What effect does the food industry have on Cuttlefish? What impact does global warming have on the…

A: Effect of food industry on the cuttlefish:- During the transformation treatment in the factory, the…

Q: Which organism is most likely to fossilize? OA tropical frog A forest dwelling lizard All animals…

A: Organisms should have a hard, bony skeleton for them to leave a fossil behind. Lizards and…

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: AMNIOTE EVOLUTION A cladogram shows the evolutionary relationships between groups of organisms. The…

A: Introduction Evolution:- Evolution refers to the change of characteristics of a population that can…

Q: Cnidarians development will continue to include the stage. --- Gastrula Zygote Blastula Gamete

A: Cnidarians are also commonly known as coelenterates. They are a phylum under Kingdom Animalia that…

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: illustrates four key characters ofchordates: a notochord; a dorsal, hollow nerve cord; pharyngeal…

A: A chordate is an animal of the phylum Chordata. During some period of their life cycle, chordates…

Q: SO you wish to be a chordate do you? Which of the following are not essential to that distinction? O…

A:

Q: Does this phylogenetic tree represent the same evolutionary relationship between all the taxa? why…

A: A phylogenetic tree represents evolutionary relationship between different taxa.

Q: Cartilaginous fishes made their first appearance in the fossil record between 444 and 419 MYA, which…

A: The biological time scale is defined as the framework used by biologists to analyse and understand…

Q: Which type of animals typically not bilaterally symmetrical and its adult stage Echinoderm Copepod…

A:

Q: The taxon Crocodilia includes crocodiles, Aves includes birds, and Squamata includes snakes and…

A: Monophyletic is a group of organisms which are classified in same taxon and will share the most…

Q: What happened to the digits as tetrapod legs evolved

A: Evolution is a continuously occurring process that involves a change in organisms due to the…

Q: What are examples of the following groups of vertebrates: Chondrichthyes, Actinopterygii,…

A: The vertebrates are a group of animals that have a spinal cord that is enclosed by cartilage or a…

Q: Lateral undulation is a type of locomotion used by many basal Chordates, but it is used by derived…

A: Option 1 is correct because all living crocodilians are aquatic and they swim with lateral…

Q: Which of the following is NOT a defining chordate characteristic? O post-anal tail O vertebrae O…

A: Introduction Chordates belong to the kingdom Animalia. They are group of animals which include…

Q: which have evolved to no longer develop completely their limbs, consistent with Heidi's declaration.…

A: Tetrapods are those vertebrates that possess four limbs and primarily live on land. These include…

Q: Dinosauria is divided into these two major clades O theropods & ornithopods crurotarsans &…

A: Discovery of many new species since 1840. Dinosaur is divided into major classes.

Q: Feathers, which evolved from modified reptilian scales, show up in the fossil record at the end of…

A: Made from soft tissue, it is very rare to find the fossils of feathers as they cannot survive over a…

Q: You find a dead animal on the side of the road and are trying to identify it. After externally…

A: The physical and anatomical examination of an organism allows us to distinguish and identify it. As…

Animal Phylogeny

Cladistics is a method of biological classification where organisms are classified based on their ancestors and their relationship with them. It is defined as the concepts and methods for determining the branching patterns of evolution and evolutionary history. Some scientists, however, have preferred the term phylogenetic systematics or phylogenetic taxonomy to emphasize the reliance on a phylogeny for classification. It is the most common and accepted method for classifying organisms.