Two New Species of The Foraminiferal Genus Lockhartia From Turkey

Year 1953, Volume: 4 Issue: 1, 84 - 98, 31.01.1953

Abraham Ten Dam

Abstract

During the course of a monographical study of the Cretaceous-Paleocene Germav-Formation in SE Turkey numerous speciemens of two new species of the Forminiferal genus Lockhartia were encountered, both of them characteristic index-fossils for a special horizon. The first species: Lockhartia daviesi ten Dam n, sp. is the typical Lockhartia in the main Lockhartiahorizon in the upper part of the Paleocene portion of the Germav Formation. The second species: Lockhartia ramanae ten Dam n. sp. is a typical form in the basal part of the Maestrichtian portion of the Germav Formation and in shaly intercalations in the Maestrichtian Orbitoidal Limestone.

To facilitate future work in the genus Lockhartia, complete synonymy and data on occurence, as well as a series of characteristic axial sections are given in this paper.

Keywords

Foraminifera

Türkiye'de iki yeni Lockhartia Espesi

Abstract

During the course of a monographical study of the Cretaceous-Paleocene Germav-Formation in SE Turkey numerous speciemens of two new species of the Forminiferal genus Lockhartia were encountered, both of them characteristic index-fossils for a special horizon. The first species: Lockhartia daviesi ten Dam n, sp. is the typical Lockhartia in the main Lockhartiahorizon in the upper part of the Paleocene portion of the Germav Formation. The second species: Lockhartia ramanae ten Dam n. sp. is a typical form in the basal part of the Maestrichtian portion of the Germav Formation and in shaly intercalations in the Maestrichtian Orbitoidal Limestone.

To facilitate future work in the genus Lockhartia, complete synonymy and data on occurence, as well as a series of characteristic axial sections are given in this paper.

Keywords

Foraminifer

References

• E. R. APPLIN and P. L. APPLIN : Regional Subsurface Stratigraphy and Structure of Florida and Southern Georgia Bull. Am. Ass. Petrol. Geol Vol 28 pp. 1673 1753, pl. 3, fig. 1-2. 1944.
• E. R. APPLIN and L. JORDAN : Lockhartia cushmani Applin and Jordan and notes on two previously described Poraminifera from the Tertiary rocks of Florida Journ. of Pal. Vol. 24 pp. 474-478, pl. 66, 1050.
• E. R. APPLIN and L. JORDAN : Diagnostic Foraminifera from subsurface Formations in Florida-Journ. of Pal. Vol. 10, PP. 120-148, pl. 18-21, 1945.
• A. D'ARGHIAK and J. HAIME: Descriptious des animaux fossiles du groupes des Nummulites de l'Inde pp. 347, pl. 36, figs. 17 a-c, 1853.
• W. STORRS COLE : Lockhartia in Cuba - Journ. of Pal. Vol. 16, pp. 640742, pl. 92.
• W. STORRS COLE : Internal structure of some Floridan Foraminifera Bull Amer. Pal. Vol. 31, no. 126, pp. 227 254, pl. 1 5, 1947.
• J. A. CUCHMAN : Formanifera from the deep wells in Florida-Florida Geol. Survey, 13 th Ann. Rep. pp. 33-70, pl. 1-3,1921.
• L. M. DAVIES : Remarks on Carters genus Couulites-Dictyoconoides Nnttal with descriptions of some new species from the Eocene of North West India Rec. Geol. Survey India, VoL 59, pt. 2, pp. 287-243, pl. 16-20, 1026.
• L. M. DAVIES : The Ranikot beds at Thal (North West Frontier provinces of India) Qnart. Journ. Geol. Vol. 83, pt. 2, pd. 260-288, pl. 18 21. 1027.
• L. M. DAVIES : The fossil fauna. of the Saman Range and some Neighbouriug areas Part VI The Paleocene Foraminifera-Mem. Geol. Survey India-pal. Indica-N. S., Vol. 15-pp. 67-79, pl. 10,1930.
• L. M. DAVIES : The genera Dictyoconoides Nuttall, Lockhartia nov. spec. and Rotalia Lamarck: their type species, generic difference and fundamental distinction from the Dictyoconus group of forms Transact. Roy. Soc. Edinburgh-Vol. 57, pt .2, no. 13-pp. 307 428, pl. 1-4, 1032.
• L. M. DAVIES and E. S. PINFOLD : The Eocene beds of the Punjab SaltRange-Mem. Geol. Survey India-N. S., Vol. 24. no. 1 pp. 1 79, pl. 1 7, 1937.
• W. A. MACFADYEN: The Geology of British Somaliland-Part I of the Geology and Paleontology of British Somaliland. Publ. Govt. Somaliland Protectorate-pp, 68-69,1933.
• W. L. F. NUTTAL : The larger Foraminifera of the Upper Ranikot Series-Geol. Magazine-Vol. 63-pp. 112-121, pl. 10 -11, 1926.
• W. L. F. NUTTAL : The stratigraphy of the Upper Ranikot series (Lower Eocene) of Sind, India Rec. Geol. Survey India Vol. 65, pt. 2, p. 312, 1931.
• W. L. F. NUTTAL and A. G. BRIGHTON : Larger Foraininifera from the Tertiary of SomaliIand Geol. Magazine Vol. 68 - pp. 49 65, pl. 1 4, 1931.
• G. D. OVEY : A new species of Loekhartia Davies from British Sonialilatid, with notes on other species of the genusAnn. Mag. Natrl. Hist.-Series 11, Vol. 8-pp. 571576, pl. 10-11, 1946.
• G. D. OVEY : Amendment to the diagnosis of Lockhartia hunti Ovey-Gontr. Gushmau Lab. For. Res. Vol. 24, pt. 4 p. 99, 1948.
• J. PFENDER : A propos de Siderloites vidali Douville et quelques autres-Bull. Soc. Geol. France-Series 3, Vol. 5, p. 231, 1934.
• A. SILVESTRI : Forminiferi dell'Eocene della Somalia - Paleontogr. Italica-Vol. 32, suppl. 4-p. 80, 1939.
• A. SILVESTRI : Foraminifera dell'Eocene della Somalia - ibidem Vol. 32, suppl. 5 pp. 76-79, pl. 1, fig. 6, pl. 5, fig. 5 pl. 9, fig. 4, pl. 13, fig. 12, pl. 18, fig. 8, pl. 21, fig. 7, pl. 22, fig. 6. 1942.