Webb22 apr. 2024 · Vertebra centra show a marked concavity on the articular surfaces (amphicoelous) and appear nearly circular in median transverse view. The dimensions are approximately 55mm (EMRG-Chond-SK-1a) and 70mm (EMRG-Chond-SK-1b) in diameter (dorsoventrally) and the vertebral anterior-posterior length is 23mm (EMRG-Chond-SK-1a). Webb5 jan. 2024 · In four separate finds, researchers and amateur fossil hunters discovered the ancient vertebrae of now-extinct sharks; all four vertebrae are covered in shark bite marks, and two still have...
Vertebral Column and Turtle Shells – Morphology of the …
WebbThe development of shark vertebrae and the possible drivers of inter- and intra-specific differ-ences in vertebral structure are poorly understood. Shark vertebrae are used to … Webb5 jan. 2024 · However, evidence of ancient shark-versus-shark attacks is somewhat rare. The oldest evidence of shark-on-shark predation dates to the Devonian period (419.2 … hackerusa jobs
Sagittal cross section of a sandbar shark vertebra prepared for …
Webb10 juli 2024 · There are bits and pieces of fish vertebrae id information in a number of books, papers, articles, websites etc. but nothing that I’ve seen that I would consider to be comprehensive. The below paper is a rather … WebbDownload scientific diagram Sagittal cross section of a sandbar shark vertebra prepared for age estimation. Arrow indicates a counted ring from publication: Analysis of variability in vertebral ... Webb16 juli 2010 · The common seal (pictured) has a relatively smaller head and concave forehead, and its nostrils form a V-shape. The grey seal has an elongated 'Roman nose' and its nostrils are parallel (they don't meet at the bottom). View our full guide to identifying these two species. How to identify cetacean (whale and dolphin) skulls and bones hackett auto museum jackson mi