Which feature of ichthyostega would not have improved its ability to move on land? it had an olecranon process on its ulna it had a bony attachment between pelvic girdle and vertebral column its hindlimb was oriented laterally away from the body in had digits on its appendages

Q: What are the features that result in tunicate’s being classified as an animal, chordate and…

A: Urochordata are also known as tunicates because outer body of tunicates is covered by tunic which is…

Q: Which of the following are shared-derived* characteristics of the species found within the Genus…

A: Shared derived characters among Genus Paranthropus.

Q: In what way do teleosts and other fish benefit from having a bony operculum?   it prevents water…

A: An operculum is a hard and bony flap-like structure It covers the gills of teleosts and other bony…

Q: Which of the following animals has a hydraulic skeleton?a. crustaceanb. sea urchinc. sea stard.…

A: Tube feet are also called podia and these are small mobile tubular projections on the oral front of…

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: Amphioxus does not possess a vertebral column? yes or no?

A: Amphioxus  They are also known as lanceolate and belonging to the group of invertebrate animals.

Q: Identify and explain what insects are expected to have the most sclerotized heads? Does an…

A: Scelerotin is typically a brown coloured substance found in cuticles of insects. Scelerotin is…

Q: One difference between the 'fishapod', Tikaalik, and the early tetrapod, Acanthostega, is... Group…

A: Tetrapod development began approximately 400 million years ago in the Devonian Period, with the…

Q: What are description of Tyrannosaurus rex, Giganotosaurus and carcharodontosaurus please don’t tell…

A: In the living world, we see a large number of microorganisms, animals and plants. These organisms…

Q: Nematodes and nematomorphs have which type(s) of skeletal system?    a.) Endoskeleton b.)…

A: Nematodes  Nematodes are pseudocoelomate and have complete digestive system with distinct mouth and…

Q: Select all the forms of locomotion that are dependent on pectoral fins to generate thrust. |…

A: Need to find which form of locomotion that are dependent on pectoral find to generate thrust.

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: A dichotomous key to the classes of Subphylum Vertebrata 1 with fins 1' without fins 2 with jaws 2'…

A: The scientific tool that identifies organisms based on observable traits is called a dichotomous…

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

A:

Q: Edmontosaur or hardosaurs what ways can they defend itself from predators like large with powerful…

A: INTRODUCTION Endmontosaurs They are large dinosaurs lived in North America during late Cretaceous…

Q: Are the chelicerae of horseshoe crabs homologous or analogous to (1) scorpion pedipalps? (2)…

A: Horseshoe crabs are present in the cephalothorax region. It has walking legs which are the modified…

Q: How does the limb orientation of "advanced" tetrapods differ from that of "primitive" tetrapods? How…

A: Tetrapods are four-footed animals that belong to a group that comprises all vertebrates above the…

Q: What differences in morphology among Osteolepiformes (Eusthenopteron), Tiktaalik, and Ichthyostega.…

A: Osteolepiforme- Long and slender, with posterior fins set far back and a long mouth lined with…

Q: Tyrannosaurus rex how can they be description of body? Are they muscular body or sturdy or stocky?…

A: Tyrannosaurus is described as the genus of tyrannosaurus therapy dinosaur. This is distributed all…

Q: In which ways does the limb orientation of "advanced" tetrapods differ from that of "primitive"…

A: Manus is a term used for hands or and forelimbs.

Q: How does the arrangement of skeletal structures differ in sea urchins, sea stars, and brittle stars?…

A: Star fish, brittle star and sea urchin fall under big family of Echinodermata. There are several…

Q: Osteostracans are not included in the Gnathostome clade because

A: Why are the Osteostracans not included in the Gnathostome clade?  Ans : They lack true bone…

Q: Which of the following is NOT an axial skeleton in the frog? urostyle mandible sternum ribs

A: Introduction:- The axial skeleton is comprised of the 80 bones that make up the body's central core.…

Q: Which of the following structures are homologous in arthropods? 1st leg of horseshoe crab: 1st…

A: The arm of a human, the wing of a bird or a bat the leg of a dog and the flipper of a dolphin or…

Q: Characterized by a pelvis with the pelvic bones radiating from the center Ichthyosaurs Plesiosaurs…

A: Dinosaurs These are a diverse group of reptiles belonging to the clade Dinosauria. They first…

Q: In the hips of modern birds the pelvic bone is _____. angled posteriorly because birds descended…

A: The anatomy and physiology of the birds are specially designed to enable flying. The specific…

Q: give 2 examples of animals with exoskeleton and endoskeleton  where the hydrostatic skeleton is lost

A: A skeleton is the structural framework that holds an animal's body together. There are three sorts…

Q: Question: All members of Chordata have true vertebrae.   True or False?

A: Animalia is the most advanced and complex kingdom among all the other kingdoms. The body has tissue…

Q: a marine blue crab has ten pairs of jointed appendages, which include large claws called chelipeds…

A: Question - a marine blue crab has ten pairs of jointed appendages, which include large claws called…

Q: When an organism shifts from a quadriped to a biped, over time what happens to the spine? 1. The…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

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: 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: What phylum is a ray in? Group of answer choices Chondrichthyes Echinodermata Osteichthyes Reptilia…

A: The ray or stingray is a cartilaginous fish that has cartilaginous endoskeleton structure. They are…

Q: Petromyzon marinus body shape skin texture body division? head buccal funnel soft papillae or lip…

A: Petromyzon marinus, commonly known as sea lamprey belongs to the phylum Chordata. The species belong…

Q: Evolutionarily, the jaws of vertebrates developed from   the circular mouth of lampreys.   the…

A: The evolution of the jaw is one of the foremost noteworthy innovations in vertebrate history. A jaw…

Q: Which of the following statements regarding dipnoi (lungfish) is true?     amniotes share a more…

A: Lungfish are freshwater  rhipidistian vertebrates belonging to the order Dipnoi. Lungfish are best…

Q: In order to flip themselves upright, horseshoe crabs use their: Chelipids Telson Gnathobases Spatula…

A: As per our honor code, we are allowed to answer only one question at a moment. You have posted more…

Q: Crocodiles Pterosauria Tianyulong Thyreophora Kulindadromeus Psittacosaurus Ceratopsidae (ex.…

A: Phylogeny refers to a species' evolutionary or periodic history. Phylogenetics is the study or…

Q: Hardosaurs like edmontosaur the front feet do they have name or description how they look? It looks…

A: The comb-crested hadrosaurid (duck-billed) dinosaur Edmontosaurus regalis is a species of…

Q: What disadvantages associated with having exoskeletons did arthropods have to overcome to allow…

A: Hi, Thanks For Your Question.  Answer : It Required Special Modification For Gaseous Exchange And…

Q: Using forceps or tweezers, gently pull the 4th or 5th pereiopod to examine its motion. Do so without…

A: As per the guidelines, we are entitled to do one question at a time. Kindly submit the question and…

Q: In a typical insect leg, what part may be composed of 2 to 5 segments? a. Femur b. Trochanter c.…

A: Insects have panned crustacean hexapod spineless or invertebrates creatures of the class Insect.…

Q: How can invertebrates move without a system to for muscles to pull on?

A: Introduction: Invertebrates: Invertebrates are those which are cold blooded animals lacking bones.…

Q: Make some observations about archosaurs as a group. What features do they have in common that make…

A: The Archosaur is a subclass that consists of birds and reptiles (the crocodiles) and a few other…

Q: Compared to the skulls of ancestral sarcopterygians and modern lungfish the skulls of Acanthostega…

A: The skull is a bone structure that forms the head in vertebrates.

Q: Shown below are images of the skeletal structure of the front limbs of 6 animals: human, crocodile,…

A: Animal Primary function Human The human arm's role is to reach items with your hands.  Whale The…

Q: All of the following are derived characters of chordates at least some time in their life EXCEPT…

A: Chordates are the class of organisms that belongs to the phylum chordata. It is a type of phylum…

Q: Describe the structural differences between the pleopods and the pereiopods up the prawn. What…

A: We are answering first part For rest of question pls Repost

Marine Evolution

Marine habitat is less explored, and hence, its biological diversity is far less known. The marine habitats are not constant due to their shifting nature, while the terrestrial habitats are more stable. Marine biology is the science that deals with the study of diverse marine species, their interactions, and behavioral characteristics.