The oldest freshwater crabs: claws on dinosaur bones
نویسندگان
چکیده
منابع مشابه
Dinosaur killer claws or climbing crampons?
Dromaeosaurid theropod dinosaurs possess a strongly recurved, hypertrophied and hyperextensible ungual claw on pedal digit II. This feature is usually suggested to have functioned as a device for disembowelling herbivorous dinosaurs during predation. However, modelling of dromaeosaurid hindlimb function using a robotic model and comparison of pedal ungual morphology with extant analogue taxa bo...
متن کاملHow Did Dinosaur Bones Turn Into Fossils?
If fossilization was simply replacement of bone with stone, fossil and living bones wouldn't be as chemically similar as they are, and the intricate details found in fossilized dinosaur bones would not have survived [1]. Even more intriguing is the fact that some of the proteins in bone have survived the fossilization process, in dinosaurs and "older" fossils [2], a fact very consistent with a ...
متن کاملIn press, Cognitive Science ON WORDS AND DINOSAUR BONES 1 Running Head: ON WORDS AND DINOSAUR BONES On the meaning of words and dinosaur bones: Lexical knowledge without a lexicon
Although for many years a sharp distinction has been made in language research between rules and words—with primary interest on rules—this distinction is now blurred in many theories. If anything, the focus of attention has shifted in recent years in favor of words. Results from many different areas of language research suggest that the lexicon is representationally rich, that it is the source ...
متن کامل4/20/2008 7:12:21 PM ON WORDS AND DINOSAUR BONES 1 Running Head: ON WORDS AND DINOSAUR BONES On the meaning of words and dinosaur bones: Lexical knowledge without a lexicon
Although for many years a sharp distinction has been made in language research between rules and words—with primary interest on rules—this distinction is now blurred in many theories. If anything, the focus of attention has shifted in recent years in favor of words. Results from many different areas of language research suggest that the lexicon is representationally rich, that it is the source ...
متن کاملThe oldest dinosaur? A Middle Triassic dinosauriform from Tanzania.
The rise of dinosaurs was a major event in vertebrate history, but the timing of the origin and early diversification of the group remain poorly constrained. Here, we describe Nyasasaurus parringtoni gen. et sp. nov., which is identified as either the earliest known member of, or the sister-taxon to, Dinosauria. Nyasasaurus possesses a unique combination of dinosaur character states and an elev...
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ژورنال
عنوان ژورنال: Scientific Reports
سال: 2019
ISSN: 2045-2322
DOI: 10.1038/s41598-019-56180-w