{"product_id":"2259944","title":"The Embryology of the Echiuroid Worm Urechis Caupo","description":"xv, 219 pp. CONTENTS: Preface and Acknowledgments; Introduction; Reproductive System and Germ Cells of Urechis; Material and Methods Used in the Embryological Investigation; Development of Urechis; Gastrulation and Shifting of Embryonic Areas and Axes; Organogenesis; Comparison of the Development of Urechis with that of Other Echiuroids; Comparison of Echiuroid Development with that of Other Invertebrates; The Phylogenetic Position of the Echiuroidea; Bibliography.","brand":"The American Philosophical Society","offers":[{"title":"Default Title","offer_id":12596435091526,"sku":"2259944","price":80.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1232\/9510\/products\/2259944.jpg?v=1571425147","url":"https:\/\/ym-demo.myshopify.com\/products\/2259944","provider":"Yesterday's Muse","version":"1.0","type":"link"}