Abstract

The main trends in the morphological evolution of bryozoans at the Devonian-Carboniferous boundary were established when studying the Late Devonian–Early Mississippian bryozoans of Eurasia. The diversity of vertical colonies increased from Early Famennian to Late Tournaisian. An increase in their strength occurred by growth of the exozonal skeleton due to the growth of vesicular tissue in cystoporates, thickening of the autozooidal walls in trepostomates, complication of polymorphism in cryptostomates, and thickening of the branches in fenestrates. The most rapid evolutionary changes were observed in rhabdomesine bryozoans of the order Cryptostomata, expressed in the change of the spiral arrangement of autozooids to complex one and a high diversity of heterozooids and styles. The development of keels, nodes, superstructures, acanthostyles, and spines in bryozoans provide protection from predators.

中文翻译：

---

法属-图尔尼时期欧亚苔藓虫的形态演变

摘要

研究欧亚大陆的晚泥盆世—早密西西比期的苔藓动物时，确定了泥盆纪-石炭纪边界的苔藓动物形态演变的主要趋势。垂直殖民地的多样性从早期的法门尼人到晚期的图尔尼人逐渐增加。它们的强度的增加是由于胞外骨骼的生长，这是由于环孢子虫的囊泡组织的生长，维氏菌素体的自体壁的增厚，隐孢子虫的多态性的复杂化以及门齿的分支的增厚所致。观察到最快速的进化变化是隐孢子虫（Cryptostomata）阶的横纹肌瘤，其表现为类胡萝卜素的螺旋排列变化为复杂的杂种动物和样式。龙骨，节点，上层建筑，棘手风格的发展，