Wikipedia
Mennegoxylon
Mennegoxylon, commonly referred to as "snakewood", is a genus of now extinct trees exhibiting a cell structure resembling snake skin when viewed in cross section. Mennegoxylon is found in the Eocene age Yegua formation of Texas and Louisiana, USA. Specifically, many examples of this "snakewood" have been found in College Station, Texas, at several undisclosed sites. This is an extremely rare and sought after petrified wood type, although there is little awareness of its existence because of its rarity.
The generitype is Mennegoxylon jonesii. The genus is named for Dr. Alberta Mennega.
Mennegoxylon (Snakewood) Specimen No. 26 was found by Chase Jennings in College Station in March 2013.