Welcome to the Treatise on Invertebrate Paleontology!
Please enter a genera name to retrieve more information.
Monoclimacis
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Neograptina
Family:
Monograptidae
Formal Genus Name and Reference:
Monoclimacis FRECH, 1897, p. 621
Type Species:
*Graptolites vomerinus NICHOLSON, 1872a, p. 52, OD
Images
(Click to enlarge in a new window)
Fig. 293,3a-c. *M. vomerina (Nicholson), 3a, neotype (Strachan, 1971, p. 91), proximal end only, Riccarton Beds, Elliotsfield, Scotland (Zalasiewicz, 2000f, Atlas, Folio 1.48), 3 b-c, proximal end and distal fragment, BGS RCV2012, BGS RCV236, Buttington quarry, Wales (Loydell & Cave, 1993, fig. 7E-F). Scale bars, 5 mm.
Synonyms
Geographic Distribution
worldwide
Age Range
Beginning Stage in Treatise Usage:
Silurian, Llandovery (Rhuddanian, Cystograptus vesiculosus Biozone)
Beginning International Stage:
Rhuddanian
Fraction Up In Beginning Stage:
0
Beginning Date:
443.07
Ending Stage in Treatise Usage:
Wenlock (Homerian, Cyrtograptus lundgreni Biozone)
Ending International Stage:
Homerian
Fraction Up In Ending Stage:
0
Ending Date:
426.74
Description
Tubarium straight or dorsally curved proximally, sicula short, first theca originated via modified resorption porus or derived type, thecae geniculate, with supragenicular wall parallel to or less commonly inclined to axis of tubarium, apertural excavations semi-circular or semi-elliptical, commonly with overhanging hood, outgrowth of the dorsal wall, in some species, small number of proximal thecae hooked
References
Frech, Fritz. 1897. Lethaea Geognostica oder Beschreibung und Abbildung für die Gebirgs-Formationen bezeichnendsten Versteinerungen, Herausgegeben von einer Vereinigung von Palaeontologen, 1. Theil, Lethaea Palaeozoica. E. Schweizerbart'sche Verlagshandlung. Stuttgart. 690 p.
Museum or Author Information
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Neograptina
Family:
Monograptidae
Formal Genus Name and Reference:
Monoclimacis FRECH, 1897, p. 621
Type Species:
*Graptolites vomerinus NICHOLSON, 1872a, p. 52, OD
Images
(Click to enlarge in a new window)
Fig. 293,3a-c. *M. vomerina (Nicholson), 3a, neotype (Strachan, 1971, p. 91), proximal end only, Riccarton Beds, Elliotsfield, Scotland (Zalasiewicz, 2000f, Atlas, Folio 1.48), 3 b-c, proximal end and distal fragment, BGS RCV2012, BGS RCV236, Buttington quarry, Wales (Loydell & Cave, 1993, fig. 7E-F). Scale bars, 5 mm.
Synonyms
Geographic Distribution
worldwide
Age Range
Beginning Stage in Treatise Usage:
Silurian, Llandovery (Rhuddanian, Cystograptus vesiculosus Biozone)
Beginning International Stage:
Rhuddanian
Fraction Up In Beginning Stage:
0
Beginning Date:
443.07
Ending Stage in Treatise Usage:
Wenlock (Homerian, Cyrtograptus lundgreni Biozone)
Ending International Stage:
Homerian
Fraction Up In Ending Stage:
0
Ending Date:
426.74
Description
Tubarium straight or dorsally curved proximally, sicula short, first theca originated via modified resorption porus or derived type, thecae geniculate, with supragenicular wall parallel to or less commonly inclined to axis of tubarium, apertural excavations semi-circular or semi-elliptical, commonly with overhanging hood, outgrowth of the dorsal wall, in some species, small number of proximal thecae hooked
References
Frech, Fritz. 1897. Lethaea Geognostica oder Beschreibung und Abbildung für die Gebirgs-Formationen bezeichnendsten Versteinerungen, Herausgegeben von einer Vereinigung von Palaeontologen, 1. Theil, Lethaea Palaeozoica. E. Schweizerbart'sche Verlagshandlung. Stuttgart. 690 p.