Manuel Quiring

化石拍卖（私人收藏）

Ricinulei 在古生物学中享有盛名，因为它们是为数不多在被发现为活体之前就已以化石形式被发现的生物之一。尽管如今存活的物种对光高度回避、性情隐秘，但它们的祖先在古生代曾经繁盛而多样。 
 
大约四分之三的已知 Ricinulei 化石物种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老成员归入已灭绝的亚目 Paleoricinulei。 
 
向树木的转移：在琥珀中保存的灭绝成员（如 Primoricinulei 亚目下的 Hirsutisoma grimaldii）显示了不同的生态位。基于它们毛茸茸的身体结构和腿部适应性，科学家认为在白垩纪时期，它们栖息在树皮上，作为树栖捕食者，而不是仍旧埋在土壤中。 
 
Ricinulei 是一类体型非常小、充满神秘感的蛛形纲动物。它们通常被称为“带帽蜱蛛”，尽管它们既不是蜘蛛也不是蜱虫。它们是以捕食为生的节肢动物，栖息在落叶层或洞穴中，通常长度小于1厘米。 
 
时期：白垩纪（约1亿年前） 
地点：缅甸，呼卡旺谷 
大小：琥珀尺寸 22×14.5×5 毫米

  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 - 矩阵化石 - Ricinulei(Spider relatives) - 22 mm - 14.5 mm

白垩纪， 上 （1.005 - 0.66亿年）

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琥珀 - 矩阵化石 - Ricinulei(Spider relatives) - 22 mm - 14.5 mm

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