Science. 1984 Jan 20;223(4633):279-81. doi: 10.1126/science.223.4633.279.
Abundant Permian plant megafossils were discovered in the Del Norte Mountains of Brewster County, Trans-Pecos Texas. The flora is dominated by a new and distinctive type of gigantopteroid leaves. Marine invertebrates are closely associated, and this admixture of continental and marine fossils indicates a deltaic depositional setting, probably on the southern margin of the Permian Basin. Conodonts indicate correlation with the uppermost Leonardian Road Canyon Formation in the Glass Mountains. These are the youngest Paleozoic plant megafossils known in North America; they add an important paleontological element to the classic Permian area of this Continent.
在得克萨斯州特皮科德克萨斯州德尔诺特山脉发现了大量的二叠纪植物大化石。该植物群以一种新型且独特的巨型翅果叶为主。与海洋无脊椎动物密切相关，这种大陆和海洋化石的混合物表明存在三角洲沉积环境，可能位于二叠纪盆地的南部边缘。牙形石表明与玻璃山的最上部伦纳德峡谷组有关。这些是北美的已知最年轻的古生代植物大化石；它们为这个大陆的经典二叠纪地区增添了一个重要的古生物学元素。
