User:Phenrie01/Evaluate an Article

Evaluate an article
This is where you will complete your article evaluation. Please use the template below to evaluate your selected article.


 * Shark
 * I chose to evaluate Shark because that is a topic that is interesting to me.

Lead
Sharks are a group of elasmobranch fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins that are not fused to the head. Modern sharks are classified within the clade Selachimorpha (or Selachii) and are the sister group to the rays. However, the term "shark" has also been used for extinct members of the subclass Elasmobranchii outside the Selachimorpha, such as Cladoselache and Xenacanthus, as well as other Chondrichthyes such as the holocephalid eugenedontidans.


 * The Lead includes an introductory sentence that concisely and clearly describes the article's topic.
 * The Lead includes a brief description of the article's major sections.
 * The Lead does not include information that is not present in the article.
 * The Lead concise.

Content
Under this broader definition, the earliest known sharks date back to more than 420 million years ago. Acanthodians are often referred to as "spiny sharks"; though they are not part of Chondrichthyes proper, they are a paraphyletic assemblage leading to cartilaginous fish as a whole. Since then, sharks have diversified into over 500 species. They range in size from the small dwarf lanternshark (Etmopterus perryi), a deep sea species of only 17 centimetres (6.7 in) in length, to the whale shark (Rhincodon typus), the largest fish in the world, which reaches approximately 12 metres (40 ft) in length. Sharks are found in all seas and are common to depths of 2,000 metres (6,600 ft). They generally do not live in freshwater although there are a few known exceptions, such as the bull shark and the river shark, which can be found in both seawater and freshwater. Sharks have a covering of dermal denticles that protects their skin from damage and parasites in addition to improving their fluid dynamics. They have numerous sets of replaceable teeth.

Well-known species such as the tiger shark, blue shark, great white shark, mako shark, thresher shark, and hammerhead shark are apex predators—organisms at the top of their underwater food chain. Many shark populations are threatened by human activities.


 * The article's content is relevant to the topic.
 * The content is up-to-date.
 * I don't think there content that is missing or content that does not belong.
 * The article does not deal with one of Wikipedia's equity gaps. It does not address topics related to historically underrepresented populations or topics.

Tone and Balance

 * The article is neutral.
 * There are no claims that appear heavily biased toward a particular position.
 * There are no viewpoints that are overrepresented, or underrepresented.
 * The article does not attempt to persuade the reader in favor of one position or away from another.

Sources and References

 * All facts in the article are backed up by a reliable secondary source of information.
 * The sources are thorough.
 * The sources are current.
 * The sources are written by a diverse spectrum of authors.
 * The links work

Organization

 * The article is well-written.
 * The article does not have any grammatical or spelling errors.
 * The article is well-organized.

Images and Media

 * The article includes images that enhance understanding of the topic.
 * The images well-captioned.
 * All of the images adhere to Wikipedia's copyright regulations.
 * The images are laid out in a visually appealing way.

Checking the talk page

 * There are not many conversations going on.
 * The article is rated fairly high. It is part of a WikiProjects.
 * Wikipedia talks more about the facts of sharks.

Overall impressions

 * The article is very informative.
 * The articles strength are the amount of facts it has.
 * The article is very well completed.