, an extinct crocodyliform, has a complex pattern of tooth replacement. Replacement of functional teeth followed an alternating numerical and directional wave from posterior to anterior. Notably, the presence of an initial fossa in some teeth indicated root resorption and facilitated the development of tooth replacement. These aspects suggest a coordinated tooth replacement process, enabling the animal to maintain functional dentition. This study provides insights into the unique dental dynamics of , highlighting its lifelong polyphyodonty and the meaning of alternating replacement patterns. Microtomography allowed the comprehension of these intricate tooth replacement processes.

中文翻译：

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Armadillosuchus arrudai（Sphagesauridae，Crocodyliformes），Admantina 地层（Turonian – Santonian），巴西东南部包鲁盆地：牙齿发育方面

是一种已灭绝的鳄鱼，具有复杂的牙齿更换模式。功能性牙齿的更换遵循从后到前的交替的数字和方向波。值得注意的是，一些牙齿中初始窝的存在表明牙根吸收并促进了牙齿替换的发展。这些方面表明协调的牙齿替换过程，使动物能够保持功能性牙列。这项研究提供了对独特牙齿动力学的见解，强调了其终生的多齿畸形和交替更换模式的意义。显微断层扫描可以理解这些复杂的牙齿替换过程。