Among the intriguing mysteries that the dinosaurs have left for us, one of the most persistent is what the arms of Tyrannosaurus Rex (T.rex) were used for. A recent presentation to the American Geological Society presented evidence to support the idea that the arms were well-adapted for slashing attacks on T. rex's prey.
Firstly there is evidence related to the structure of the arms. The arms of T. rex appeared to be so tiny and weak compared to the rest of its body that early researchers dismissed them as being virtually useless. But recent analysis of marks on the fossilized bones of T. rex arms show that they were connected by significant amounts of muscle tissue: enough to lift or push nearly 400 kilograms. They would have had plenty of power to slash.
Secondly, the claws of T. rex show an unusual feature which would have made them very well-suited to slashing. Each arm has only two claws, as opposed to the three claws that are normal on smaller carnivorous dinosaurs. The reduced number of claws means that the power of the arm would be focused onto just two points, resulting in deeper cuts. And the curved claws themselves were 6 to 10 centimeters long, similar in size to the teeth of T. rex.
Thirdly, the length of the arms makes sense in terms of efficiency. The arms could have provided T. rex with the means to slash at prey held in its jaws. With the jaws holding the prey close, the arms would have been able to tear gashes over a meter long and several centimeters deep in just a few seconds. Longer or heavier arms might have done the job better, but they would have weighed more and cost T. rex too much energy to carry around.
Both the reading and lecture discuss the mystry behind the Tyrannosaurus Rex (T.rex) arms whether it uses them for prey or not. Former states three point to indicate well-adaptation of arms for prey and latter counters the merits of the points by explaining them insignificant.
First of all, author of the reading claims that T.rex arms were well connected with muscle tissue which would enough to carry up upto 400 kilograms and giving the T.rex capabilites to slash for prey. The lecturer agrues this by saying that arms primary purposes are not for slashing for prey rather the fossils of the T.rex shows significant fractures in bones. As a result, using arms for prey would lead them to death.
Secondly, the author states that T.rex would have tow claws instead of three. For that, It could exert more power for slashing for prey. The lecturer counters this and claims this as irrelevant. He points out that the teeths and it's poweful bites were enoungh to prey for T.rex.
Finally, the reading says that length of the arms provides power T.rex for slashing power for prey .However, The lecturer agrees this for young T.rex and claims it's not the case for adults. Because,adults jaws are enough to prey and long arms are not required for prey.
| Post date | Users | Rates | Link to Content |
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| 2021-10-26 | himanshukmr234 | 65 | view |
| 2021-10-03 | New_account | 73 | view |
| 2021-10-02 | devvratjoshi | 63 | view |
| 2021-10-02 | devvratjoshi | 63 | view |
| 2021-10-02 | devvratjoshi | 63 | view |
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Grammar and spelling errors:
Line 7, column 99, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Don't put a space before the full stop
Suggestion: .
... power T.rex for slashing power for prey .However, The lecturer agrees this for yo...
^^
Line 7, column 101, Rule ID: SENTENCE_WHITESPACE
Message: Add a space between sentences
Suggestion: However
...ower T.rex for slashing power for prey .However, The lecturer agrees this for young T.r...
^^^^^^^
Line 7, column 162, Rule ID: IT_IS[6]
Message: Did you mean 'it's' (='it is') instead of 'its' (possessive pronoun)?
Suggestion: it's; it is
... agrees this for young T.rex and claims its not the case for adults. Because,adults...
^^^
Line 7, column 198, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Put a space after the comma
Suggestion: , adults
...ims its not the case for adults. Because,adults jaws are enough to prey and long arms a...
^^^^^^^
Transition Words or Phrases used:
finally, first, however, if, second, secondly, well, as a result, first of all
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 5.0 10.4613686534 48% => More to be verbs wanted.
Auxiliary verbs: 4.0 5.04856512141 79% => OK
Conjunction : 8.0 7.30242825607 110% => OK
Relative clauses : 7.0 12.0772626932 58% => More relative clauses wanted.
Pronoun: 18.0 22.412803532 80% => OK
Preposition: 20.0 30.3222958057 66% => OK
Nominalization: 1.0 5.01324503311 20% => More nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 1043.0 1373.03311258 76% => OK
No of words: 215.0 270.72406181 79% => More content wanted.
Chars per words: 4.8511627907 5.08290768461 95% => OK
Fourth root words length: 3.82921379641 4.04702891845 95% => OK
Word Length SD: 2.35953813852 2.5805825403 91% => OK
Unique words: 113.0 145.348785872 78% => More unique words wanted.
Unique words percentage: 0.525581395349 0.540411800872 97% => OK
syllable_count: 291.6 419.366225166 70% => OK
avg_syllables_per_word: 1.4 1.55342163355 90% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 2.0 3.25607064018 61% => OK
Article: 5.0 8.23620309051 61% => OK
Subordination: 1.0 1.25165562914 80% => OK
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 0.0 2.5761589404 0% => More preposition wanted as sentence beginning.
Performance on sentences:
How many sentences: 11.0 13.0662251656 84% => Need more sentences. Double check the format of sentences, make sure there is a space between two sentences, or have enough periods. And also check the lengths of sentences, maybe they are too long.
Sentence length: 19.0 21.2450331126 89% => OK
Sentence length SD: 51.7407715251 49.2860985944 105% => OK
Chars per sentence: 94.8181818182 110.228320801 86% => OK
Words per sentence: 19.5454545455 21.698381199 90% => OK
Discourse Markers: 7.09090909091 7.06452816374 100% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 4.0 4.19205298013 95% => OK
Sentences with positive sentiment : 3.0 4.33554083885 69% => OK
Sentences with negative sentiment : 3.0 4.45695364238 67% => OK
Sentences with neutral sentiment: 5.0 4.27373068433 117% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.262077836149 0.272083759551 96% => OK
Sentence topic coherence: 0.127175773266 0.0996497079465 128% => OK
Sentence topic coherence SD: 0.0626594776644 0.0662205650399 95% => OK
Paragraph topic coherence: 0.197571393188 0.162205337803 122% => OK
Paragraph topic coherence SD: 0.0117311751057 0.0443174109184 26% => Paragraphs are similar to each other. Some content may get duplicated or it is not exactly right on the topic.
Essay readability:
automated_readability_index: 11.2 13.3589403974 84% => Automated_readability_index is low.
flesch_reading_ease: 69.11 53.8541721854 128% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 8.3 11.0289183223 75% => OK
coleman_liau_index: 10.85 12.2367328918 89% => OK
dale_chall_readability_score: 7.81 8.42419426049 93% => OK
difficult_words: 44.0 63.6247240618 69% => More difficult words wanted.
linsear_write_formula: 13.5 10.7273730684 126% => OK
gunning_fog: 9.6 10.498013245 91% => OK
text_standard: 8.0 11.2008830022 71% => OK
What are above readability scores?
---------------------
Rates: 63.3333333333 out of 100
Scores by essay e-grader: 19.0 Out of 30
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Note: the e-grader does NOT examine the meaning of words and ideas. VIP users will receive further evaluations by advanced module of e-grader and human graders.