This study reports the oldest fossil record of the genus Adina, A. vastanenesis n. sp., from the early Eocene of Vastan lignite mine (Cambay Shale Formation), Surat district, Gujarat. This fossil wood is characterized by diffuse porous wood, predominantly solitary tylosed vessels, simple perforations, scanty paratracheal to diffuse to sometimes diffuse in aggregate axial parenchyma, predominantly uniseriate to occasionally biseriate rays, and non septate fibres with bordered pits and shows its best resemblance with the modern species, Adina multifolia Haviland, belonging to the tribe Naucleeae (subfamily Cinchonoideae) of the family Rubiaceae. The present discovery becomes the first fossil record of the wood of Adina, which provides an insight about the Gondwanan origin either for the genus Adina or the tribe Naucleeae and its further dispersal to Southeast Asia.

这项研究报告了Adina , A属最古老的化石记录。vastanenesis ñ。sp.，来自古吉拉特邦苏拉特地区 Vastan 褐煤矿（Cambay 页岩组）的早期始新世。这种化石木材的特征是弥漫性多孔木材，主要是孤立的有棱的血管，简单的穿孔，很少的气管旁弥漫，有时在聚集的轴向薄壁组织中扩散，主要是单列到偶尔双列的射线，以及带有边缘凹坑的非隔膜纤维，并显示出与现代物种Adina multifolia Haviland，属于茜草科 Naucleeae 族（Cinchonoideae 亚科）。目前的发现成为阿迪纳木材的第一个化石记录，它提供了关于Adina属或 Naucleeae 部落的冈瓦纳起源及其进一步扩散到东南亚的见解。