Noah has finished building the ark and is looking over the animals that God has brought to him. He wonders at the multitude of the animals for he has enough space for about 15,000 of them. There are lots of small creatures, particularly birds. Of the larger animals there are few, a couple of giraffes about 12 cubits tall, a couple of pachyderms (mammoths or elephants) shorter but heavier than a giraffe. And of course there are the animals in between the birds and the giraffe.
What concerns Noah are the herds of dinosaurs just at the edge of his holding area. Off in the distance is the spinosaurus, a fierce looking fish eating dinosaur that at 20 tons is much larger than a pachyderm. Even the worrisome looking tyrannosaurus is smaller than it, fortunately the tyrannosaurs are primarily scavengers and don’t harass the gathered animals. But the herds are composed of extremely large dinosaur, the sauropods. The largest of these animals is half as long as the ark and weighed over 110 tons.
So how did Noah fit the dinosaurs on the ark? What happened when a 110 ton sauropod sauntered up the gangway? Well, the gangway broke and all loading had to be stopped. So no 110 ton sauropods on the ark!
The popular conception of dinosaurs is that they were massive creatures that were mostly larger than an elephant. But what was the average size of a dinosaur? The average that appears most often in the literature is about 850 kg, or the size of a grizzly bear. But as some people point out, there is no such thing as an average dinosaur, so let’s look at the median size of a dinosaur. Median is the measurement that’s in the middle, in this case, half of the dinosaurs would be bigger and half smaller. A median size dinosaur would be about the size of a giraffe, but wait a minute, why a giraffe? Why not a rhinoceros? They both weigh about the same, so a median size dinosaur should have weighed about 2 tons (or slightly less than 2 tonnes for the metric minded). Or how about a Kentrosaurus (a type of stegosaur), it weighed in at 1800 kg and stood 5 ft. tall and was 18 ft. long
According to the Wikipedia article on dinosaurs, most (the popular definition of average) theropods weighed between 100 and 1000 kg, while most predatory dinosaurs weighed in between 10 and 100 kg. That means that most theropods and predators were smaller than median size of dinosaur. All dinosaurs below this size would have no problem fitting on to the ark.
That leaves the large dinosaurs to contend with. An Apatosaurus juvenile at 5 years of age would be approximately 1000kg, or half the weight of our median dinosaur, and the Apatosaurus was among the largest of dinosaur. A juvenile T.rex, one of the largest predatory dinosaurs, at 2 years of age stood only 7 ft. high and weighed in at 30 kg. It would appear that the large dinosaurs that Noah had with him on the ark were juveniles, and that all of them would have been less than 2 tons. With the largest dinosaur on the ark weighing in at approximately 1000 kg, the median size of dinosaur would of course be somewhat less.
Noah was therefore able to fit all the dinosaurs on the ark. There was no problem with size because juveniles less than 5 years old were taken aboard for the large dinosaurs, while half of all dinosaurs (baraminologists estimate there were about 55 kinds of dinosaur) could be accommodated as full grown adults.
CMI Dinosaurs on the Ark
- Dr. Gregory M. Erickson\'s DinoGrowth Page
A web article with graphs of dinosaur growth rates.
- File:Tyrantgraph.png - Wikipedia, the free encyclopedia
A graph showing dinosaur growth rates.
- The extinction of the dinosaurs
A technical creationist article on the extinction of the dinosaurs.