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Normalograptus arrikini

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Journal Article

Faunal specificity, endemism and paleobiogeography: the post-glacial (Hirnantian-early Rhuddanian) graptolite fauna of the North-African border of Gondwana: a case study

Philippe Legrand
Published: 01 July 2009
Bulletin de la Société Géologique de France (2009) 180 (4): 353–367.
DOI: https://doi.org/10.2113/gssgfbull.180.4.353
...: Normalograptus nseirati sp. nov., Normalograptus gelidus sp. nov., Normalograptus arrikini sp. nov., Normalograptus pretilokensis sp. nov., Neodiplograptus inezzani sp. nov., Neodiplograptus incommodus sp. nov. and “ Glyptograptus ” saharensis sp. nov. 30 06 2008 13 07 2007 Société géologique...
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Normalograptus gelidus sp. nov. 1: Specimen SY 458 a4bis; 2: Specimen SY 459 a2; 3-3bis: Specimen SY 459 a6 (Holotype) (the proximal part of the rhabdosome is preserved on a piece of rock, the distal part on an other piece). Normalograptus arrikini sp. nov. 4: Specimen SY 464 a4 (Holotype); 5: Specimen SY 464 a9. Normalograptus pretolikensis sp. nov. 6: Specimen SY 500 a19 (Holotype); 7: Specimen SY 500 a15; 8: Specimen SY 500 b1. Neodiplograptus inezzani sp. nov. 9: Specimen SY 522 b1 (Morphe α); 10: Specimen SY 522 c3 (Morphe β) (Holotype); 11: Specimen SY522 d2 (Morphe γ). Neodiplograptus incommodus sp. nov. 12: Specimen SY 433 a2 (Holotype); 13: Specimen SY 484 a3; 14: Specimen SY 484 a6. “Glyptograptus” saharensis sp. nov. 15: Specimen SY 483 f1bis (Holotype). Normalograptus (?) nseirati sp. nov. 16: Specimen SY 605 c2bis (Holotype). All specimens from Oued In Djerane except Nd. innezani from the North of the Gara kassar section and N. nseirati from Nseirat section. X 5.

Normalograptus gelidus sp . nov. 1: Specimen SY 458 a 4bis ; 2: Specimen ...

Published: 01 July 2009
F ig . 7. – Normalograptus gelidus sp . nov. 1: Specimen SY 458 a 4bis ; 2: Specimen SY 459 a 2 ; 3-3bis: Specimen SY 459 a 6 (Holotype) (the proximal part of the rhabdosome is preserved on a piece of rock, the distal part on an other piece). Normalograptus arrikini sp. nov. 4: Specimen SY
Journal Article

Normalograptus kufraensis , a new species of graptolite from the western margin of the Kufra Basin, Libya

ALEX PAGE, GUIDO MEINHOLD, DANIEL P. LE HERON, MOHAMED ELGADRY
Published: 11 February 2013
Geological Magazine (2013) 150 (4): 743–755.
DOI: https://doi.org/10.1017/S0016756812000787
... as follows: it is broader than N. angustus ; it has greater thecal spacing than N. ajjeri or N. arrikini . A table comparing measurements of N. kufraensis with 44 other Normalograptus taxa differentiates it from other members of this morphologically conservative group. Even though N. angustus and N. ajjeri...
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Figure 7.

Stratigraphic range of the graptolites Normalograptus angustus , N. ajerr...

Published: 11 February 2013
Figure 7. Stratigraphic range of the graptolites Normalograptus angustus , N. ajerri and N. arrikini with proposed relationship to N. kufraensis illustrated. The biozonation and correlation between regions follows Loydell ( 2012 a ). See text for other
Journal Article

Biogeography and Mass Extinction: Extirpation and re-invasion of Normalograptus species (Graptolithina) in the Late Ordovician Palaeotropics

Daniel Goldman, Charles E. Mitchell, Michael J. Melchin, Junxuan Fan, Shuang-Ye Wu, H. David Sheets
Published: 01 November 2011
Proceedings of the Yorkshire Geological Society (2011) 58 (4): 227–246.
DOI: https://doi.org/10.1144/pygs.58.4.300
... + + Sudburigraptus? angustifolius 8,9 + Normalograptus angustus 1,2,3,8,10,11,12,13,15,17,25,26,27,33,34,35 + + + + + + + Normalograptus antiquus 4,22,25 + + Normalograptus arrikini 42 + Normalograptus avitus 3,9,11...
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Journal Article

Did lingering ice sheets moderate anoxia in the Early Palaeozoic of Libya?

Daniel Paul Le Heron, Guido Meinhold, Alex Page, Andrew Whitham
Published: 01 March 2013
Journal of the Geological Society (2013) 170 (2): 327–339.
DOI: https://doi.org/10.1144/jgs2012-108
... sandstones and shale intervals are organized into coarsening and fining upward cycles of parasequences 2–10 m thick ( Fig. 4 ). The graded beds are separated by varicoloured shale and silty shale. A graptolitic marker bed occurs towards the top of the sequence, containing the endemic species Normalograptus...
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