ملخص كتاب شهادة الأحافير: تعريف المشكلة
"evolutionary stasis, though recognized by all and used by stratigraphers in the practical work of our profession, was ignored by evolutionists as “no data.”...Trueman rejoiced in Gryphaea(1922) but never mentioned the hundreds of Liassic species that show no temporal change. Rowe (1899) monographed...