Isograptus and its descendant graptolites / Chen Xu, Stanley C. Finney. -- 10 s. : il. -- In: Paleontologia Cathayana: An English Journal of Palaeontology and Stratigraphy. -- Number 2. -- s. 87-96. -- Beijing : Science Press, 1985
. -- Anotace: s. 87 (eng)
paleontologie
Isograptus
graptoliti
ordovik
rody
tendence
biogeografie
následovníci