Chondrichthyes

    Page 1 of 1 - About 6 Essays
  • Essay On Great White Sharks

    classes, which thusly contain orders and families, genus and species. Each organism is allotted two names. The first name would be the organism’s genus, and the second name would be its species. Taxonomy consists of all of these groups, as it is affiliated with classifying every organism on this planet. Taxonomy of Great White Sharks (with definitions of each classification) Common Name: great white shark Kingdom: Animalia. Essentially all animals that have ever existed fall under Animalia. Phylum: Chordata. Organisms that have at least at some stage of development a notochord (a supportive rod-like structure made from cartilage), a central nervous system located in the back, and openings for water to pass over the gills. Class: Chondrichthyes. Jawed fish with paired fins, paired nostrils, scales, two-chambered hearts, and skeletons made of cartilage (rather than bone). Order: Lamniformes. Includes all (and only) mackeral sharks; sharks having a pointed snout with large teeth and a crescent-shaped tail. In addition, an anal fin, five-gill slits, two dorsal fins, no fin spines, mouth behind the eyes, and no nictitating eyelids. Family: Lamnidae (very similar classification to lamniformes). This family includes mackerel sharks, porbeagles (large Atlantic sharks), and great white sharks. Genus Species (aka scientific name): Carcharodon carcharias Great white sharks are notorious for being the ocean’s top predator and they are incredibly feared by humans. They are feared…

    Words: 1362 - Pages: 6
  • Essay On Sphyrna

    Phylogeny of Sphyrna- Hammerhead Sharks INTRODUCTION I will be investigating the phylogenetic history of Sphyrna, a genus of hammerhead sharks. The eight species that fall under this genus are Sphyrna corona (scalloped bonnethead), Sphyrna gilberti (Carolina hammerhead), Sphyrna lewini (scalloped hammerhead), Sphyrna media (scoophead), Sphyrna mokarran (great hammerhead), Sphyrna tiburo (bonnethead), Sphyrna tudes (smalleye hammerhead), and Sphyrna zygaena (smooth hammerhead). Hammerhead sharks…

    Words: 756 - Pages: 4
  • Chordates Research Paper

    organs and muscles of the body. The fourth feature is a post-anal tail. This is another feature that humans outgrow in the womb. The final feature of Chordates is that their blood is contained in vessels. Calculating an exact number of organisms classified under one category is impossible because scientists cannot agree on the criteria used to classify each organism or one organism falls into multiple categories. There is an estimated 50,000 living species within the phylum Chordata that are…

    Words: 444 - Pages: 2
  • The Great White Shark Essay

    Sharks don’t fossilize well because they’re from the class of chondrichthyes meaning their skeletons are made of cartilage, a flexible connective tissue. This is one of the reasons why there is a disagreement over when the first shark first existed. However, shark teeth do fossilize well and sharks produce thousands of teeth in a lifetime. The oldest shark teeth date back to the Devonian Period about 400 million years ago and were found in Europe. Shark scales also fossilize well.…

    Words: 1732 - Pages: 7
  • Brief Summary: The Evolution Of Sharks

    “The shark is the apex predator in the sea. Sharks have moulded evolution for 450 million years. All fish species that are prey to the sharks have had their behaviour, their speed, their camouflage, their defense mechanisms moulded by the shark.” – Paul Watson. Sharks are cartilaginous fish with pair fins and nares, two chambered hearts and jaws. These characteristics are unique to the class, chondrichthyes. Ray, skates, and chimaeras are members of this class and sharks closest relatives.…

    Words: 1486 - Pages: 6
  • Frog Integumentary System

    The subphylum Vertebrata includes all the familiar animals we tend to see everyday, and some rare and unusual ones (O’Neil, 2012). Scientists classify the seven different Vertebrates based on their skeletal system, general environmental adaptation, and reproductive systems. These seven Vertebrates include, Agnatha, Chondrichthyes, Osteichthyes, Amphibia, Reptilia, Aves, and Mammalia. During the lab dissection, the class dissected organism from only four of these classes. First, we dissected the…

    Words: 2619 - Pages: 11
  • Previous
    Page 1
    Next

Related Topics:

Popular Topics: