Most species of Bothriolepis were relatively small, benthic, freshwater detritivores, averaging around 30 centimetres (12 in) in length. However, the largest species, B. maxima, had a carapace about 100 centimetres (39 in) in length. Bothriolepis fossils are found in Middle and Late Devonian strata (387–360 million years ago). Because the fossils are found in freshwater sediments, Bothriolepis is presumed to have spent most of its life in freshwater rivers and lakes, but was probably able to enter salt water as well because its range appeared to have corresponded with the Devonian continental coastlines. Many paleontologists hypothesize that they were anadromous, that is, they lived most of their lives in saltwater, and returned to freshwater only to breed, similar to salmon. Its box-like body was enclosed in armor plates, providing protection from predators.
Early primitive fish. Upper Devonian Gaspe Peninsula,Eastern Canada.
Here are beautiful full black Megalodon tooth replicas. Each tooth is about 5.5 inches long and is a cast of a genuine Megalodon tooth. These are NOT genuine megalodon teeth. These replicas are nearly perfect and would be a great addition to any collection. Each tooth has full serrations and amazing detail.
$129.00Abelisaurus is a genus of predatory abelisaurid theropod dinosaur during the Late Cretaceous Period of what is now South America. It was a bipedal carnivore that probably reached about 7.4 metres in length, although this is uncertain as it is known from only one partial skull.
$11.95Acrocanthosaurus is a genus of theropod dinosaur that existed in what is now North America during the Aptian and early Albian stages of the Early Cretaceous. Like most dinosaur genera, Acrocanthosaurus contains only a single species, A. atokensis.11.95