|Epigraptus kozlowskii Mierzejewski, 1978
Diagnosis. - "The autothecal apertural apparatus is well-developed,
complex, and highly variable. The ventral and dorsal apertural processes
either differ in shape, dimensions, or size relations, or are identical to
each other. A single or both processes display their lateral margins turned
outwards and expanding distally, often with characteretic lateral lobes."
(Mierzejewski 1978, pp.568-569).
Occurence. - Poland: Silurian (Ludlovian) erratic boulders; Sweden,
Mierzejewski, P. 1978. Tuboid graptolites from erratic boulders of Poland. - Acta Palaeontologica Polonica 23, 4, 557-575.
Mierzejewski, P. 1988. Encrusting graptolites from the Mulde Beds of Gotland. - Acta Palaeontologica Polonica 33, 3, 261-266.
|Class Graptolithoidea, Ordo Tuboidea, Family Cyclograptidae
To to right is a SEM micrograph of an isolated autotheca; Ludlovian erratic
boulder from Poland. From Mierzejewski.