Band pairs in shark vertebrae have been used for decades to estimate shark age, of practical use in conserving overfished sharks and managing the remaining shark fisheries. However, recent research demonstrates that previous ...
Ecology
Jul 30, 2018
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The formation of the vertebrae in early embryonic development requires an intricate genetic dance requiring precise timing and interaction of many different cells.
Cell & Microbiology
Feb 5, 2016
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Crocodiles are freakin' amazing animals. They've been around for about 250 million years, and throughout this time have survived two mass extinctions, and at least twice decided to hitch up and take to the seas. Their historical ...
Archaeology
Nov 10, 2015
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67
Thalattosaurs, literally meaning "ocean lizard", are a group of prehistoric marine reptiles living during the Triassic Period in North America and Eurasia. They bore a superficial resemblance to lizards, but the exact relationships ...
Archaeology
Apr 1, 2013
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Somites, precursors for the segmental structures such as the vertebral column, ribs and skeletal muscles, form periodically by segmentation of the rostral parts of the presomitic mesoderm (PSM). This periodic event is regulated ...
Cell & Microbiology
Jan 9, 2013
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0
The research of Chinese pterosaurs has made remarkable contributions to the study of those flying reptiles. Most specimens were unearthed from the Yixian and Jiufotang formations of western Liaoning, China. More recently, ...
Archaeology
Mar 2, 2012
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