Somewhat flattened, globular echinoderms, having thin, brittle shells of calcareous plates. They are useful models for studying FERTILIZATION and EMBRYO DEVELOPMENT
Sea urchins -- Development -- Research -- Methodology : Developmental biology of the sea urchin and other marine invertebrates : methods and protocols / edited by David J. Carroll, Department of Biological Sciences, Florida Institute of Technology, Melbourne, FL, USA ; Stephen A. Stricker, Department of Biology, University of New Mexico, Albuquerque, NM, USA
Sea urchins -- Evolution : The taphonomy of echinoids : skeletal morphologies, environmental factors, and preservation pathways / James H. Nebelsick, Andrea Mancosu
2021
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Sea urchins, Fossil. : The taphonomy of echinoids : skeletal morphologies, environmental factors, and preservation pathways / James H. Nebelsick, Andrea Mancosu
Sea-walls -- Massachusetts -- Boston Harbor : In the matter of the claim of Geo. Clapp & Fred'K. Ballou against the Commonwealth : hearing before Dwight Foster, Charles U. Cotting, and Jonthan A. Lane, the arbitrators appointed under act of the legislature to adjudicate upon the claim : Hon. William Gaston, Darwin E. Ware, Esq., D.C. Linscott, Esq., counsel for claimants ; Hon. Charles R. Train, J.O. Teele, Esq., counsel for the Commonwealth
