Catalog - Globigerina kozlowskii Catalog - Globigerina kozlowskii

CATALOG OF ORIGINAL DESCRIPTIONS: Globigerina kozlowskii Brotzen & Pozaryska 1961

This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.

Higher levels: pf_cat -> G -> Globigerina -> Globigerina kozlowskii
Other pages this level: << < G. increbescens, G. incretacea, G. inflata, G. infracretacea, G. infracretacea gargasiana, G. infracretacea trochoidea, G. intermedia, G. isahayensis, G. jurassica, G. juvenilis, G. kelleri, G. khadumica, G. kochi, G. kondoi, G. konkensis, G. kozlowskii, G. krosniensis, G. kugleri, G. kyushuensis, G. labiacrassata, G. lamellosa, G. linaperta, G. linaperta transdanubica, G. linaperta turgida, G. loetterli, G. lozanoi, G. macrastoma, G. marialuisae, G. mckannai, G. medizzai, G. megastoma> >>

Globigerina kozlowskii

Citation: Globigerina kozlowskii Brotzen & Pozaryska 1961
taxonomic rank: species
Type specimens: no. 12.
Type age (chronostrat): Holotype (pl. 3, top row) and specimens of pis. I and 2 from the Middle Paleocene; occurs also in the Upper Paleocene.
Type locality: Holotype (pl. 3, top row) and specimens of pl. 2 from a depth of 241 meters, and specimens of pl. 1 from a depth of 251 meters in a well at Pamietowo, near Chojnice, northern Poland. Rare at 215 meters (upper Paleocene), and very abundant between 235-250 meters (Middle Paleocene).
Type repository: Warsaw; Paleontological Institute, Academy of Sciences, Warsaw, Poland

Current identification/main database link: Globoconusa daubjergensis (Bronnimann 1953)

Original Description

Translated from French using google translate original French text below

This small species is characterized by a very high spiral dimension and a rapidly increasing dimension of the chambers, with or without additional chambers with or without umbilicus, the number of towers being from 2½ to 3, the number of rooms per turn of 3 or 4, main opening, umbilicus. There are often multiple sutural openings and their orifices are small, often pore-shaped; Large papilla wall, finely porous, with a diameter of up to 0.3 mm. and can reach a height of 0.3 mm.

Cette petite espece se caracterise par un cote spiral tres haut et une dimension rapidement croissante des chambres, avec ou sans chambres additionnelles avec ou sans ombilic, le nombre de tours etant de 2½ a 3, le nombre de chambres par tour de 3 ou 4, ouverture principale, ombilic. On trouve souvent des ouvertures multiples suturales et leurs orifices sont petits, souvent en forme de pores; mur papille gros, finement poreux, d'un diametre allant jusqu'a 0.3 mm. et pouvant atteindre une hauteur de 0.3 mm.

Extra details from original publication

Translated from French using google translate original French text below

Their taxonomic position is given by test structure and general characteristics, and the species is reported to genus Globigerina s. l. Within the different types, there is a wide variation, especially in the relation between diameter and height, which varies in such a way that the lower forms have a height a little smaller than the dimension of the largest diameter. (eg Fig. 2, Fig. 14) and in extremely tall forms the diameter-height varies from 1 to 1.5 (Fig. 2, Fig. 7-12). The characteristic feature of these forms is that they are usually quite small, the proloculum rarely has a diameter greater than 30 microns. The most common types belong to the forms represented (Plate I, Fig. 1-8). They often have an umbilical opening acette suturales openings weakly indicated. They are almost as tall as they are wide, and their proloculum is within 30 to 40 microns. These types have no additional rooms and they have mostly three, more rarely four chambers in the last turn. The genotype belongs to this category. Finally we have the forms whose proloculum is extremely large and whose diameter can go up to 70 microns. They are characterized by additional chambers, one of which is usually located above the umbilicus. Other additional chambers are found infrequently, which are placed 9a and over the sutures. The first type is represented Pl.1, fig. 9-14, while the others are Pl. 2, fig. 1-6. The standard chambers are clearly papillose and all the additional rooms are almost flat and finely porous. The structure of the shell of the normal chambers is in principle similar to the recent form, Globigerina bulloides. The wall of the shell itself is thinner, the papillae are, compared to the thickness of the shell larger and irregular, the pores lesser. The papillae are rather irregularly arranged on the whole shell, but they can be strongly prolonged on the lower side of the chambers.

"Relationships .-- This new species is directly related to Globigerina daubjergensis Bronnimann Hofker (1960, Cushman Found, Foram Res., Contr., Vol 11, pt 3, pp. 73-86) represented a whole series of forms that show sutural openings and even an additional chamber Loeblich et al., (1957, US Nat., Mus., Bull., No. 215) have even described and described sutural openings in Globigerina daubjergensis, but no additional chambers. The main difference between the new species and Globigerina daubjergensis is the extremely high spiral dimension in the new form, although the typical Globigerina daubjergensis are of rather low forms, but in the ancient Paleocene (not the Danian) high isolated examples exist. never in the typical form that each copy of Globigerina kozlowskii shows.We have species with a high spiral dimension of tertiary origin, such as Globigerina spiralis Bolli. gerina spiralis is distinguished by a much larger number of chambers per turn. In some cases, Globigerina spiralis of the Vincentown formation represented by Loeblich and Tappan (1957, US Nat.Museum, Bull., No. 215, p.182, p.51, Figs 6-9), is very close to our species. Figure 6 above shows a large additional chamber of the same shape as those we observed in Poland. The whole group of Globigerina rubra d 'Orbigny which already appears in the Eocene is much higher than the new species. Finally, it can be said that Subbotina represented a Globigerinoides rubriformis of the Upper Eocene, which shows certain parent traits with Globigerina kozlowskii, but does not have additional chambers or additional openings. "

Leur position taxionomique est donnee par la structure de la coquille et les caracteres generaux, et l'espece est rapportee au genre Globigerina s. l. A l'interieur des differents types, on peut observer une large variation, en particul ier dans la relation entre le diametre et la hauteur, qui varie de telle facon que les formes basses ont une hauteur un peu inferieure a la dimension du plus grand diametre (par exemple Pl. 2, fig. 14) et que chez les formes extremement hautes le diametre-hauteur varie de 1 a 1.5 (Pl. 2, fig. 7-12). Le trait caracteristique de ces formes est qu'elles sont en general assez petites, le proloculum a rarement un diameu·e superieur a 30 microns. Les types les plus frequents appartiennent aux formes representees (Pl. I, fig. 1-8). Elles ont souvent une ouverture ombiliquee acote d'ouvertures suturales faiblement indiquees. Elles sont presque aussi hautes que larges, et leur proloculum se tient dans les limites de 30 a 40 microns. Ces types n'ont pas de chambres additionnelles et ils ont pour la plupart trois, plus rarement quatre chambres dans le demier tour. Le genotype appartient a cette categorie. Finalement nous avons les formes dont le proloculum est extrement grand et dont le diametre peut aller jusqu'a 70 microns. Elles se caracterisent par des chambres additionnelles dont l'une est habituellement situee au-dessus de l'ombilic. On trouve assez rarement d'autres chambres additionnelles, qui se placent 9a et la par-dessus les sutures. Le premier type est represente Pl.1, fig. 9-14, tan dis que les autres se trouvent Pl. 2, fig. 1-6. Les chambres ordinaires sont nettement papilleuses et toutes les chambres additionnelles sont presque planes et finement poreuses. La structure de J'ecorce des chambres normales est en principe semblable a Ia forme recente, Globigerina bulloides. Le mur de la coquille lui-meme est plus mince, les papilles sont, par rapport a l'epaisseur de la coquille plus grosses et irregulieres, les pores moindres. Les papilles sont assez irregul ierement disposees sur toute la coquille, mais elles peuvent etre fortement prolongees sur la face inferieure des chambres.
"Relations. - Cette nouvelle espece se rattache directement a Globigerina daubjergensis Bronnimann. Hofker (1960, Cushman Found. Foram. Res., Contr., vol. 11, pt. 3, pp. 73-86) a represente toute une serie de formes qui montrent des ouvertures suturales et meme une chambre additionnelle. Loeblich et ses collaborateurs (1957, U.S. Nat. Mus., Bull., no. 215) ont meme repnresente et decrit des ouvertures suturales chez Globigerina daubjergensis, mais pas de chambres additionnelles. La principale difference entre Ia nouvelle espece et Globigerina daubjergensis est le cote spiral extremement haut chez la nouvelle forme. Bien que les Globigerina daubjergensis typiques soient de formes assez basses, il existe dans le Paleocene ancien (non le Danien) des exemples hauts isoles, mais jamais sous la forme typique que montre chaque exemplaire de Globigerina kozlowskii. On conn a it des especes a cote spiral eleve d 'origine tertiaire pi us recente, par exemple, Globigerina spiralis Bolli. La Globigerina spiralis se distingue par un beaucoup plus grand nombre de chambres par tour. Dans certams cas, Globigerina spiralis de la formation de Vincentown representee par Loeblich et Tappan (1957, U.S. Nat. Mus., Bull., no. 215, p. 182, pl. 51, figs. 6-9), est tres proche de notre espece. La figure 6 surtout montre une grande chambre additionnelle de meme forme que celles que nous avons observees en Pologne. Toutle groupe de Globigerina rubra d' Orbigny qui apparalt deja dans l'Eocene est beaucoup plus haut que la nouvelle espece. Finalement, on peut indiquer que Subbotina representait une Globigerinoides rubriformis de l'Eocene superieur qui montre certains traits de parente avec Globigerina kozlowskii, mais ne possede pas de chambres additionnelles ni d'ouvertures additionnelles."


Brotzen, F. & Pozaryska, K. (1961). Foraminiferes du Paleocene et de l'Eocene inferieur en Pologne septentrionale; remarques paleogeographiques. Revue de Micropaléontologie. 4: 155-166. gs


Globigerina kozlowskii compiled by the pforams@mikrotax project team viewed: 25-5-2024

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