UPPER CRETACEOUS WOODS FROM THE OLMOS FORMATION (LATE CAMPANIAN--EARLY MAASTRICHTIAN), COAHUILA, MEXICO.Published in:American Journal of Botany, 2010, v. 97, n. 7, p. 1179, doi. 10.3732/ajb.0900234By:ESTRADA-RUIZ, EMILIO;MARTINEZ-CABRERA, HUGO I.;CEVALLOS-FERRIZ, SERGIO R. S.Publication type:Article