-
Cyrtograptus is an
extinct genus of graptolites.
Cyrtograpsus grayi**** (now a synonym) was
brought to a
meeting of the
Geological Society of
Glasgow and...
-
Cyrtograptus canadensis from the
middle Silurian of the Cape
Phillips Formation, Nunavut....
- The Wenlock-Llandovery
boundary is
defined by the
first occurrence of
Cyrtograptus centrifugus. The
stage is
named after Sheinwood village,
north of Much...
-
Whitwell Coppice, Homer, England, U.K. Biologic:
First appearance of
Cyrtograptus lundgreni (Graptolite). 52°36′56″N 2°33′53″W / 52.6156°N 2.5647°W...
- span
formality Formal Lower boundary definition FAD of the
graptolite Cyrtograptus lundgreni Lower boundary GSSP
Sheinton Brook, Homer,
England 52°36′56″N...
- Petr Štorch; Xin Wang; Ju
Zhang (2015). "A new
graptolite species of
Cyrtograptus from the
uppermost Llandovery of Ziyang,
Shaanxi Province, China". Palaeoworld...
-
comparable form †
Cyrtograptus †
Cyrtograptus grayae – or
unidentified comparable form †
Cyrtograptus kirki †
Cyrtograptus laqueus †
Cyrtograptus rigidus †Cyrtorostra...
- prin****l
zonal graptolites are, from
above downwards:
Monograptus testis,
Cyrtograptus linnarssoni, and
Cyrtogra murchisoni. When
traced northward into Denbighshire...
- †Curtognathus †Cybelopsis †Cycloceras †Cyclonema †Cyclopteris †Cyphaspis †
Cyrtograptus †Cystodictya †Cystodictya
elegans – type
locality for
species †Dalmanites...
- †Composita
subtilita – or
unidentified comparable form †Composita
sulcata †
Cyrtograptus †Cystodictya †Dictyonema †Didymograptus †Didymograptus
extensus †Diplograptus...
