sphenacodont

例句：

1. 1.The discovery of this new species has sparked a debate about its significance in the ecosystem.
   这一新物种的发现引发了对它在生态系统中重要性的辩论。
2. 2.The sphenacodont's unique features have made it a popular choice for paleontologists.
   这种古生物的独特特征使其成为古生物学家们的首选。
3. 3.The sphenacodont's extinction has left a significant impact on the study of dinosaur evolution.
   这种古生物的灭绝对恐龙进化的研究产生了重大影响。