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Prochnygraptus gen.n. (Graptolithina, Monograptidae) from the middle and upper Llandovery of Europe
Alois Pribyl & Petr Storch
Vestnik Ustredniho ustavu geologickeho 1985, 60, 3, 159-164
 
 
ABSTRACT:

"Prochnygraptus
gen.n. was established on the species Monograptus singularis Törnquist, 1892 and its occurence ranges within
the biozones of the middle and upper Llandovery of Europe. The type species together with
Prochnygraptus crispus (Lapworth,
1876) and
P. germanicus sp.n. form an idependent line of evolution of monograptids, perhaps derived from the middle Llandovery
species of the group
Monograptus knockensis."
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