Fabaceae are one of the most diverse flowering-plant groups today, and in Mexico their presence is well represented since the late Cretaceous. In this work are reported two fossil woods from the El Bosque Formation, early Eocene of Southern Mexico. These new records show close resemblance with the modern wood of Kingiodendron (Detarioideae) and Enterolobium (Caesalpinioideae). Detarioideae subfamily show a diversity much higher in tropical Africa than in South America or Asia, while the mimosoid clade diversity is pantropical. The relicts of both groups are known from the Paleocene onwards around the world. Comparing the fossil record and the fossils here studied, it is possible to confirm the presence of Fabaceae in Mexican territory since the Cretaceous and to suggest that the family was one of the most important components of the earliest forests in Mexico through the Cenozoic.

Additionally, in this work describes the oldest record of the genera fossil for Kingiodendron and Enterolobium worldwide, which contributes towards the understanding the paleo-dispersal pathways of both groups within the early branching Fabaceae.

豆科是当今最多样化的开花植物群之一，自白垩纪晚期以来，它们在墨西哥的存在很好地代表。在这项工作中，报告了来自墨西哥南部早始新世 El Bosque 地层的两种化石木材。这些新记录与Kingiodendron (Detarioideae) 和Enterolobium的现代木材非常相似（木香科）。Detarioideae亚科在热带非洲的多样性比在南美洲或亚洲高得多，而含羞草进化枝的多样性是泛热带的。从古新世开始，世界各地都知道这两个群体的遗物。比较化石记录和这里研究的化石，可以确认自白垩纪以来墨西哥领土上存在豆科植物，并表明该科是墨西哥至新生代最早森林的最重要组成部分之一。

此外，在这项工作中，描述了世界范围内最古老的Kingiodendron和Enterolobium属化石的记录，这有助于了解这两个群体在早期分支豆科植物中的古传播途径。