Taxon Concept provided by
  Home |   Search

Click on a letter below to get a list of species:
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z all
Clavatorella sturanii Giannelli & Salvatorini 1976 from: Bolli, H.M.Saunders, J.B. (1985): Oligocene to Holocene low latitude planktic foraminifers. In: Plankton Stratigraphy Eds: Bolli, H.M.Saunders, J.B. p. 155-262
.
Anonymous: Unedited TaxonConcept data
Notice: This catalogue page may contain unedited data.
To find validated information on this taxon please visit the following project pages:

Species Clavatorella sturanii Giannelli & Salvatorini 1976


Discussion / Comments:
Bolli & Saunders (1985):
This species was first listed by Giannelli 2-4; Salvatorini (1975) on a range chart as a nomen nudum under the name Clavatorella pseudobermudezi. In 1976 they described and figured the form which originates from Malta under the new name Globorotalia sturanii. On account of the distinctly elongated last chamber the species is here placed in Clavatorella. The very low trochospiral arrangement of the chambers is the same as in C. bermudezi. It differs from this species in the chambers being less elongate and more inflated compared with the more distinctly clavate ones in C. bermudezi. While in sturanii distinct elongation is restricted to the final chamber, it occurs in bermudezi to a lesser degree also in the penultimate and often in the antepenultimate chamber. The umbilical extraumbilical aperture is in bermudezi a low slit, in sturanii a high, semicircular arch. The largest diameter in sturanii measures 0.42 turn compared with 0.7 mm in the distinctly larger bemudezi. From available data bermudezi is known to be present in low latitudes, sturanii from the Mediterranean area. A more complete geographic distribution pattern for the two species has still to be evaluated. C. sturanii has a considerably longer range within the Miocene. According to its authors it extends from Zone N 8 (Praeorbulina glomerosa Zone) to Zone N 12 (Globorotalia fohsi robusta Zone).
Synonym list:
Bolli & Saunders (1985):
1976 Globorotalia sturanii Giannelli & Salvatorini. - Giannelli & Salvatorini : p.168 pl.1, figs.1a-c
1985 Clavatorella sturanii Giannelli & Salvatorini. - Bolli & Saunders : p.255 fig. 45.3
References:

Giannelli,L.. and Salvatorini,G. (1976):
Due native specie di foraminiferi planctonici del Miocene . Boll. Soc. Paleontol. Ital. Vol. 15 p. 167-73

Bolli,H.M. and Saunders,J.B. (1985):
Oligocene to Holocene low latitude planktic foraminifers.
In: Plankton Stratigraphy Eds: Bolli, H.M.Saunders, J.B. p. 155-262
Anonymous: Unedited TaxonConcept data
Creative Commons Attribution 2.5 License
This work is licensed under a Creative Commons Attribution 2.5 License.