{"id":7652,"date":"2026-02-06T11:00:36","date_gmt":"2026-02-06T10:00:36","guid":{"rendered":"https:\/\/fossiland.com\/?post_type=product&p=7652"},"modified":"2026-02-06T15:00:38","modified_gmt":"2026-02-06T14:00:38","slug":"plectodiscus-b0020","status":"publish","type":"product","link":"https:\/\/fossiland.com\/en\/shop\/bundenbach\/plectodiscus-b0020\/","title":{"rendered":"Bundenbach Plectodiscus discoidus"},"content":{"rendered":"

Bundenbach Plectodiscus discoideus <\/strong><\/span><\/p>\n

7 cm (fossil), 14×15.5 cm (matrix)
\nBundenbach; Obereschenbach pit<\/span><\/p>\n

Very rare specimen of a sailing jellyfish on unbroken plate with good details.<\/span><\/p>\n

 <\/p>\n

Plectodiscus discoideus – A miracle of tradition in the Hunsr\u00fcck slate<\/span><\/h2>\n

The delicate trace of a medusa.<\/span><\/h3>\n

It is nothing short of a miracle that the soft, gelatinous bodies of jellyfish have survived for over 400 million years. Plectodiscus discoideus<\/em> is not the shell of a mollusc, but the fossil imprint of a benthic (bottom-dwelling) or free-swimming jellyfish. To possess such a piece in the Hunsr\u00fcck slate is to hold a moment of absolute transience in stone. <\/span><\/p>\n

 <\/p>\n

The fascinating details – what characterizes Plectodiscus discoideus:<\/span><\/h3>\n
    \n
  • The shade geometry:<\/strong> The most striking feature is the disc-shaped shape of the shade. The concentric rings and radial structures show the fine anatomy of the Medusa. In the slate, Plectodiscus<\/em> looks like a cosmic seal – flat, circular and of captivating graphic clarity. <\/span><\/li>\n
  • Soft tissue preservation par excellence:<\/strong> Since jellyfish have no skeleton, their fossilization is extremely rare. In the case of Plectodiscus<\/em>, it is often the imprints of the gastral cavities or the umbrella edge structures that have been preserved by the fine sedimentation of the Hunsr\u00fcck slate. A true testimony to biological fragility. <\/span><\/li>\n
  • Metallic shine in the dark:<\/strong> the organic material of these cnidarians has often been replaced by pyrite. When the fine structure of the jellyfish emerges as a shiny golden film on the black slate, the fossil becomes an aesthetic highlight that almost looks like a modern work of art. <\/span><\/li>\n
  • A look into the depths:<\/strong> the presence of Plectodiscus<\/em> gives us valuable clues about the ecosystem of the Devonian Sea. As a predatory cnidarian, it was an important part of the food chain at that time – a “ghost” that now tells of past worlds carved in stone. <\/span><\/li>\n<\/ul>\n

    A rarity for connoisseurs of paleontology<\/span><\/h3>\n

    While trilobites and crinoids are the classics from Bundenbach, medusae such as Plectodiscus discoideus<\/em> are among the great specialties. For collectors who specialize in the evolution of invertebrates or unusual fossilization conditions, this “slate shell” is an indispensable document of the earth’s history. <\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

    Very rare jellyfish Plectodiscus discoidus from the Devonian of Bundenbach (Hunsr\u00fcck slate), on unbroken slate slab, detailed specimen.<\/p>\n","protected":false},"featured_media":7675,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"product_brand":[],"product_cat":[145,148,152],"product_tag":[173,280,174,211,279],"class_list":{"0":"post-7652","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bundenbach","7":"product_cat-fossils","8":"product_cat-others","9":"product_tag-bundenbach","10":"product_tag-cnidaria","11":"product_tag-devon","12":"product_tag-hunsrueck-slate-2","13":"product_tag-plectodiscus","14":"product_shipping_class-s-2kg-m","15":"desktop-align-left","16":"tablet-align-left","17":"mobile-align-left","19":"first","20":"instock","21":"shipping-taxable","22":"purchasable","23":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/fossiland.com\/en\/wp-json\/wp\/v2\/product\/7652","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fossiland.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/fossiland.com\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/fossiland.com\/en\/wp-json\/wp\/v2\/comments?post=7652"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/fossiland.com\/en\/wp-json\/wp\/v2\/media\/7675"}],"wp:attachment":[{"href":"https:\/\/fossiland.com\/en\/wp-json\/wp\/v2\/media?parent=7652"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/fossiland.com\/en\/wp-json\/wp\/v2\/product_brand?post=7652"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/fossiland.com\/en\/wp-json\/wp\/v2\/product_cat?post=7652"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/fossiland.com\/en\/wp-json\/wp\/v2\/product_tag?post=7652"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}