Manuel Quiring

化石拍賣（私人收藏）

Ricinulei 这一目在古生物学中因其为在被发现活体前就已作为化石被发现的少数生物之一而享有著名地位。如今存活的物种极为避光、神秘，但它们的祖先在古生代时期曾繁盛且多样。

已知的 Ricinulei 化石物种中大约四分之三来自晚石炭纪的煤层，主要分布在欧洲和北美。古生物学家将这些古代成员归入已灭绝的亚目 Palaeoricinulei。

向树木的转变：以琥珀保存的灭绝成员（如隶属于亚目 Primoricinulei 的 Hirsutisoma grimaldii）显示出不同的生态位。基于它们毛茸茸的体表结构和腿部适应性，科学家们认为在白垩纪时期它们以树皮上的捕食者形态存在，是树栖生物，而不是埋藏在土壤中。

Ricinulei 是一类体型极小、神秘的蛛形纲动物。它们通常被称为“披帽蜱蛛”，尽管它们既不是蜘蛛也不是蜱。它们是以捕食为生的节肢动物，栖息在落叶层或洞穴中，通常长度不到1厘米。

Period: Cretaceous (100 million years old)
Location: Hukawng Valley, Myanmar
Size: Amber 22*14.5*5 mm

  The Order Ricinulei holds a famous place in paleontology because they are one of the very few organisms discovered as fossils before they were ever found alive. While today's surviving species are highly light-avoiding and secretive, their ancestors were once thriving and diverse during the Paleozoic Era.
  
  Roughly three-quarters of all known Ricinulei fossil species come from the Late Carboniferous coal measures, primarily found in Europe and North America. Paleontologists group these ancient members into the extinct suborder Palaeoricinulei.

  A Shift to the Trees: Extinct members preserved in amber (such as Hirsutisoma grimaldii under the suborder Primoricinulei) show a different ecological niche. Based on their hairy body structures and leg adaptations, scientists believe that during the Cretaceous, they lived on tree bark as arboreal predators, rather than staying buried in the soil.

  Ricinulei is a very small, mysterious order of arachnids. They are commonly known as "hooded tickspiders," although they are neither true spiders nor ticks. They are predatory arthropods that live in leaf litter or caves, usually measuring less than 1 centimeter in length.
  
Period: Cretaceous (100 million years old)
Location: Hukawng Valley, Myanmar
Size: Amber 22*14.5*5 mm



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琥珀 - Fossil matrix - Ricinulei(Spider relatives) - 22 mm - 14.5 mm

白堊紀， 上 (10050 - 6600 萬年)

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琥珀 - Fossil matrix - Ricinulei(Spider relatives) - 22 mm - 14.5 mm

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