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Orca (Killer Whale) v Deinosuchus rugosus
Topic Started: May 5 2012, 11:04 PM (16,429 Views)
Taipan
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Orca (Killer Whale) - Orcinus orca
he killer whale (Orcinus orca), commonly referred to as the orca whale or orca, and less commonly as the blackfish, is a toothed whale belonging to the oceanic dolphin family. Killer whales are found in all oceans, from the frigid Arctic and Antarctic regions to tropical seas. Killer whales as a species have a diverse diet, although individual populations often specialize in particular types of prey. Some feed exclusively on fish, while others hunt marine mammals such as sea lions, seals, walruses and even large whales. Killer whales are regarded as apex predators, lacking natural predators. Killer whales distinctively bear a black back, white chest and sides, and a white patch above and behind the eye. Killer whales have a heavy and robust body with a large dorsal fin up to 2 metres (6.6 ft) tall. Behind the fin, they have a dark grey "saddle patch" across the back. Antarctic killer whales may have pale grey to nearly white backs. Adult killer whales are very distinctive and are not usually confused with any other sea creature. The killer whale's teeth are very strong and covered in enamel. Its jaws are a powerful gripping apparatus, as the upper teeth fall into the gaps between the lower teeth when the mouth is closed. The front teeth are inclined slightly forward and outward, thus allowing the killer whale to withstand powerful jerking movements from its prey while the middle and back teeth hold it firmly in place. Killer whales are the largest extant members of the dolphin family. Males typically range from 6 to 8 metres (20–26 ft) long and weigh in excess of 6 tonnes (5.9 long tons; 6.6 short tons). Females are smaller, generally ranging from 5 to 7 metres (16–23 ft) and weighing about 3 to 4 tonnes (3.0 to 3.9 long tons; 3.3 to 4.4 short tons). The largest male killer whale on record was 9.8 metres (32 ft), weighing over 10 tonnes (9.8 long tons; 11 short tons), while the largest female was 8.5 metres (28 ft), weighing 7.5 tonnes (7.4 long tons; 8.3 short tons).

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Deinosuchus rugosus
Deinosuchus is an extinct genus related to the alligator that lived 73 to 80 Ma (million years ago), during the late Cretaceous period. The name translates as "terrible crocodile" and is derived from the Greek deinos (δεινός), "terrible", and soukhos (σοῦχος), "crocodile". The first remains were discovered in North Carolina (United States) in the 1850s; the genus was named and described in 1909. Additional fragments were discovered in the 1940s and were later incorporated into an influential, though inaccurate, skull reconstruction at the American Museum of Natural History. Knowledge of Deinosuchus remains incomplete, but better cranial material found in recent years has expanded scientific understanding of this massive predator. Although Deinosuchus was far larger than any modern crocodile or alligator—measuring up to 12 m (39 ft) and weighing up to 8.5 metric tons (9.4 short tons)—in overall appearance it was fairly similar to its smaller relatives. It had large, robust teeth that were built for crushing, and its back was covered with thick hemispherical osteoderms. One study indicates that Deinosuchus may have lived for up to 50 years, growing at a rate similar to that of modern crocodilians, but maintaining this growth over a much longer period of time. Deinosuchus was probably capable of killing and eating large dinosaurs. It may have also fed upon sea turtles, fish, and other aquatic and terrestrial prey.

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DinosaurMichael
 
Orca vs Deinosuchus
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Jinfengopteryx
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theropod
Sep 5 2012, 12:56 AM
stronger bite: maybe
Size advantage, weight: only lenghwise, and a large bull orca has actually a 2t weight advantage over Deinosuchus (the larger form, not the whimpy 3,5t version)
I don't think 8t is the weight of a 12m Deinosuchus, because it was bulkier than a modern croc, so it could weigh around of the same.
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Jinfengopteryx
Jul 9 2012, 07:46 PM
Longer breath holding?!?!?!?!??! Large crocodiles can hold their breath mor ethan an hour, so deino should be able to hold it for 2 hours, because it's much bigger than recent crocs(bigger animals usually can hold the breath longer), while dolphins usually can hold their breath only for 15 minutes!!
does the orca have enoigh jaw gape to efficiently bite the croc's trunk??? also crocodilians can hold their breath for up to 30 minutes
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Jinfengopteryx
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When they are sleeping, they can hold their breath for 3 hours, but when they are active, I think they could do it for 1h, however usually the bigger crocodiles are the better"breath holders". But I don't think it matters, the croc won't be able to fight so long, because of it's bad stamina.
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theropod
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DinosaurMichael
Sep 5 2012, 01:02 AM
theropod
Sep 5 2012, 01:00 AM
Exactly. The western form is D. rugosus and the eastern missisipiensis, isn´t it?
You're correct about rugosus, but the other is missisipiensis? I thought the ones in the east were D. riograndensis? Aren't there only 2 species of Deinosuchus? I think your're confusing Deinosuchus riograndensis for Alligator mississipensis.
sorry, i confused them then
Edited by theropod, Sep 5 2012, 05:17 AM.
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DinosaurMichael
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theropod
Sep 5 2012, 05:17 AM
DinosaurMichael
Sep 5 2012, 01:02 AM
theropod
Sep 5 2012, 01:00 AM
Exactly. The western form is D. rugosus and the eastern missisipiensis, isn´t it?
You're correct about rugosus, but the other is missisipiensis? I thought the ones in the east were D. riograndensis? Aren't there only 2 species of Deinosuchus? I think your're confusing Deinosuchus riograndensis for Alligator mississipensis.
sorry, i confused them then
No worries. Everyone get things confused sometimes.
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Fishfreak
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Orca wins imo, it has far superior agility and speed, it has superior intelligence (it does help like superpredator explained), it's bulkier, more robust and has weaponry that is a bit better (imo).
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SameerPrehistorica
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Deinosuchus wins..
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yigit05
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deinosuchus win stronger bite,more muscular,weight
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Archipithecus
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DinosaurMichael
Jul 9 2012, 07:35 AM
Elephantus
Jul 9 2012, 07:31 AM
Likely the crocodile.
Deinosuchus was an Alligator. Not a Crocodile.
i don't think it's a croc or a gator. It is a large member of the croc FAMILY, which includes crocs gators, caimans, gharials, extinct sea crocs, extinct running crocs, and stuff.
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SilverFang
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I am the only one favoring orca.
In deeper water ONLY, though. Why:
Maneuverability. It is the key in parity aquatic match ups. If the orca goes down under the armored beast, it wins.
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Carcharadon
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Deinosuchus wins, it is larger as it is far more durable with a deadlier bite
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Ausar
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Orcinus orca wins in deep water. It's heavier, bulkier, has a potent ram as an extra weapon, more adapted to being in water, has more stamina, and it might be able to use its intelligence here (normally, intelligence plays no role in interspecific conflict, but delphinids actually use it to a great extent).

In shallow water, all the advantages possessed by the orca are negated (and one even goes against it) and the "fight" would be nothing more than a one-sided feast.
Edited by Ausar, Feb 24 2014, 06:44 AM.
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Black Ice
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Deinosuchus.
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SpinoInWonderland
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Fragillimus335
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I favor the Orca, with a HUGE speed and intelligence advantage, also has a powerful bite, and the croc would have a tough time even biting the whale in the first place. The crocs armor will not stop a killer whale's bite... Or rams, for that matter!
Also, the whale likely had a decent weight advantage, more accurate estimates for Deino place it around 8-10m and 4-5 tons. An average male orca is ~6.5 tons, at maxes they are 8.5 and 10+ tons respectively.
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