Neocucullograptus Urbanek, 1970.

Diagnosis: "Monograptids with rhabdosomes, strongly curved ventrally in proximal part and invariably provided in adult
growth stages with microfusellar additions, composed of the microfusellar tissue proper. These additions are simple,
bilaterally symmetric lobes in sicula, but they produce a complex apertural apparatus in thecae, consisting of a smaller right
and a larger left lobe, sometimes provided with certain superstructures such as gular, rostral and lateral processes."
(Urbanek 1970, p. 329).

Remarks: According to Urbanek, the Upper Silurian Neocucullograptus represents the most specialized and terminal
link of the subfamily Neocucullograptinae, marked by the presence of microfusellar additions as stabilized
morphologicalcharacter and by the complex nature of apertural apparatus in thecae, composed of only the microfellar
tissue proper.

Neocucullograptus kozlowskii Urbanek,
1970.
Distal thecae of the rhabdosome in reverse
(A) and ventral (B) views (Mielnik, depth
873.40 m, kozlowskii zone); gp - gular
process; ll - left microfusellar apertural lobe;
lp - lateral process; rl - right microfusellar
apertural lobe; rp - rostral process. th -
succesive thecae.

Source:
Urbanek, A. 1970. Neocucullograptinae
subfam. (Graptolithina) - their evolutionary
and stratigraphic bearing. - Acta
Palaeontologica Polonica 15, 2/3,
163-388