The oldest known fossils of turtles look just like living turtles. The relationship between turtles and other amniotes has thus been heavily debated for years. Numerous genetic studies analyzing various parts of the genomes of amniotes have been conducted and all indicate that turtles are most closely related to birds and crocodilians (see molecular tree). This conflicts with morphological evidence (see morphology tree) which places turtles as more closely related to lizards than to crocodilians and birds. What kind of evidence would help settle this uncertainty? (b) morphology-2 (c) molecules birds birds crocodilians crocodilians lepidosaurs turtles turtles lepidosaurs mammals mammals

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: Which conditions would NOT lead to good preservation of a dead hominin skeleton? O Dying in a very…

A: Favourable conditions for fossil preservations:-

Q: Hadrosaur are large and strong looking, couldn’t they at least try to defend themselves from…

A: Introduction :- Hadrosaurs are the animals belongs to the phylum chordata .They have few mechanism…

Q: Protoceratops how did they defend itself from predators? They hornless Dino and very small. So what…

A: Protoceratops can be referred to as herbivorous dinosaur that possessed four limbs and was an…

Q: Based on similarities among forelimbs, what bones did the common ancestor of tetrapods probably…

A: Introduction : Homologous organs are those organs that have a common origin but different functions.…

Q: Comparing and contrasting biological traits between each group: 1. Buoyancy between cartilaginous…

A: In this question, we have to write the difference between 1. Buoyancy between cartilaginous fishes…

Q: Ribs, Sternum and Appendicular Structures Ribs Vertebrates Cartilaginous Fishes Bony Fishes…

A: A deuterostomic animal that belongs to the phylum Chordata is called a chordate. All chordates have…

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: 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: Which of the following is not a synapomorphy of craniates?

A: Craniates are a group of chordates that includes many organisms that have a cranium or a braincase.…

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: Vertebrae are characteristic of worms vertebrates only reptiles only all chordates

A: The key distinction between vertebrates and chordates is that vertebrates have a vertebral column,…

Q: Reset Help True The common ancestor of lamprey and lancelets had a vertebral column. False Leopards…

A: A cladogram is a  phylogenetic diagram that classifies organisms according to shared…

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

A:

Q: What term should we use to decribe the evolution of body types in the Anole lizards?…

A: Anole lizards have been reported to evolve into similar forms on the various islands which are known…

Q: Some dinosaurs flew in the air while other dinosaurs swam in the sea during the Mesozoic Era. True…

A: The Mesozoic Era, also known as the Age of Reptiles, was when dinosaurs dominated the land. This era…

Q: Nimravids Skeleton vs Siberian Tiger Skeleton vs Smilodon Necator Skelton Compare and contrast the…

A: Nimravids are a group of extinct carnivorous mammals that lived from the Eocene to the Miocene epoch…

Q: Summary of the changes in evolution of horses

A: Evolution is not a simple process and neither does it happen uniformly. Ditto is the case of the…

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: Which of these phenotypes is linked to the use of hominin tools?  Loss of incisors Increased pelvic…

A: The study of the evolution helps in determining the relationship between different organisms and it…

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: Which structure classifies an organism as a gnathostome? a lateral line system a mineralized bony…

A: structures which classify gnathostome are Jawed fishes comprising of mostly of 90% living…

Q: Basilosaurus was a fully aquatic ancient whale species that had vestigial _____________________…

A: Basilosaurus belongs to kingdom animal, phylum Chordata, class Mammalia, order artiodactyla, family…

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

A:

Q: Which of the following things is/are true about this organism? invertebrate chordate fish Agnathan…

A: The Arctic lamprey is a little fish that can grow to be over 15 inches long but is usually much…

Q: What happened to the digits as tetrapod legs evolved

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Q: Match the specific dinosaur character/feature to its most correct dinosau by pulling down to the…

A: Anterior facing/pointing pubis bone: This characteristic is associated with dinosaurs of the…

Q: True False

A: Hominins refer to extinct members of the human lineage, some of which are now quite well known from…

Q: homed dinos roc and erosurs duckb mored sauropods prosauropods other theropods watives theropods…

A: Cladistics is mainly a  process of categorizing the organisms according to their shared traits. This…

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: In the figure below which letter is pointing to the Foramen magnum O E B A This is FOSSIL #1 below…

A: Fossils are the remains or traces of ancient organisms that have been preserved in the Earth’s crust…

Q: Post-anal tail is a unique feature shared by invertabrates and jawless fish chordates tetrapods all…

A: The objective of the question is to identify the group of organisms that share the unique feature of…

Q: are birds such as cassowaries and ostriches the closest links we have to velociraptor dinosaurs or…

A: Aves is the name of other class which birds belong and its its forelimbs are modified into wings .…

Q: An antorbital fenestra and external mandibular fenestra are synapomorphies of archosaurs true false

A: Need to find whether the given statement is true and not regarding archosaurs.

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: Orrorin tugenesis was bipedal because it left footprints that showed it had an arch to its foot like…

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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.