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抓住了超级莫里森形成的类动物

D Cary Woodruff^1,2, Brian D Curtice³, John R Foster⁴

¹Phillip and Patricia Frost Museum of Science, Miami, Florida, USA.

Journal of anatomy

|July 9, 2024

概括

像Diplodocus hallorum和Supersaurus vivianae这样的巨型类恐龙是骨成熟的成年人. 它们在莫里森星系中的巨大规模和稀有性很可能是由于成熟,而不是异常状态.

科学领域:

古生物学的古生物学
脊椎动物古生物学脊椎动物古生物学
骨组织学骨组织学

背景情况:

莫里森构造拥有巨型足动物,Diplodocus hallorum和Supersaurus vivianae,以它们极端的体型而闻名.
目前正在进行的讨论质疑这些罕见的大型标本是否代表衰老的个体,还是仅仅是大体的种类.

研究的目的:

为了确定Diplodocus hallorum全型和Supersaurus vivianae的一个标本的成熟状态.
调查莫里森形成赛罗波德极端体型的生态和生物学意义.

主要方法:

从D. hallorum (NMMNH P-25079) 和S. vivianae (WDC DMJ-021) 的骨样本进行骨质组织学分析.
使用已确定的追溯计算方法进行年龄确定和成熟评估.

主要成果:

采样的两种标本,D. hallorum和S. vivianae,在死亡时被发现骨已经成熟.
对D. hallorum的逆算年龄表明最大寿命为60年;S. vivianae由于晚年成熟度超过了典型的年龄确定限制.

结论:

莫里森构造中巨型足动物的稀有性更有可能由它们的成熟状态而不是它们是异常种类来解释.
这些发现有助于了解类恐龙的体型趋势和限制.

关键词:

莫里森形成是莫里森的形成.这是一只超级鱼 (Supersaurus).骨质组织学骨质组织学地震龙地震龙

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