Metadata changes

Parent

Species.Gastunkirocopta

Document author

XWiki.AdmPinotrGryz

Attachment changes

• gastrocopta 1.jpg: Załącznik został dodany

Object changes

Object number 0 of type Species.ImageInfoClass modified

subtitle

...	...	@@ -1,0 +1,1 @@
	1	+**D, E. **//Gastrocopta sandbergeri// from Bełchatów, Miocene, H = 1.90 (D, Ml/1033/98b) and 2.14 (E, holotype, Ml/1033/98a); ISEA

Object number 0 of type Species.SpeciesClass modified

Autekologia

...	...	@@ -1,0 +1,1 @@
	1	+terrestial

Diagnoza

...	...	@@ -1,0 +1,1 @@
	1	+The new species differs from all the remaining species of the subgenus //Sinalbinula //in having ovate−conical but always slender shell, a weak crest on the body whorl (with tendency to reduce) and generally weak apertural barriers. Specimens with somewhat larger apertural barriers show some similarity to //G. nouletiana// (Dupuy, 1850), but the elongate shell shape, smaller size, less convex whorls and distinctly weaker crest on the body whorl in //G. sandbergeri //easily separate the two species. The new species differs from the group of very slender species, such as //G. didymodus// (Sandberger, 1858), G. fissidens (Sandberger, 1858), and //G. obstructa// (Sandberger, 1874), in that the parietal and angular portion of parietoangular tooth are partly fused (three latter species have a cylindrical shells with angular more or less distinctly separated from parietal). Compared to //G. pseudotheeli// Steklov, 1966 the new species has somewhat similar parietoangular tooth but the former species is distinguished immediately in having a solid crest on the body whorl.

Materiały muzealne

...	...	@@ -1,0 +1,1 @@
	1	+Holotype: ISEA Ml/1033/98a and 19 paratypes ISEA Ml/1033/98b. (Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Cracow, Poland)

Holotyp

...	...	@@ -1,0 +1,1 @@
	1	+ISEA Ml/1033/98a

Locus typicus

...	...	@@ -1,0 +1,1 @@
	1	+The brown coal mine in Bełchatów, Poland (51.15´N, 19.20´E)

Stratum typicum

...	...	@@ -1,0 +1,1 @@
	1	+Beł−B horizon, Miocene, MN5.

Porównanie

...	...	@@ -1,0 +1,6 @@
	1	+// Gastrocopta sandbergeri //differs from //G. nouletiana// (Dupuy, 1850)—even from small specimens and also those previously regarded as a slimmer form gracilidens—in the following characters: (1) more slender shell (H/W ratio in 20 nouletiana specimens = 1.55–1.88, mean 1.73; in 20 sandbergeri specimens = 1.80–2.16, mean 1.95); (2) distinctly weaker crest on the body whorl; (3) apertural barriers generally weaker developed. In some specimens of //G. nouletiana// from various localities the parietoangular tooth may be rather weakly developed, as in //G. sandbergeri//, but the shell shape and size easily separate the two species (Fig. 2F). The new species can not also be confused with //Gastrocopta serotina// Ložek, 1964 (Fig. 2G) as the latter species is most similar to// G. nouletiana.//
	2	+
	3	+ Compared to the group of species with very slender and cylindrical shells, such as //G. didymodus// (Sandberger, 1858),
	4	+//G. fissidens// (Sandberger, 1858) and //G. pseudotheeli //Steklov, 1966 (Fig. 2I), as well as //G. theeli// (Westerlund, 1877) (Fig.
	5	+2H) – //G. sandbergeri// differs rather clearly in having a less slender, ovate shell, less convex whorls, a distinctly shallow
	6	+suture and an infraparietal tooth present (cf. Prisyazhnyuk 1977). In addition, //G. fissidens// and //G. pseudotheeli// both have a very distinct crest. The parietal and angular portions of the parietoangular tooth in //G. fissidens// are partly separated, with the angular portion distinctly bent towards the palatal wall.

Synonimy

Pupa suevica

Występowanie geograficzne

...	...	@@ -1,0 +1,1 @@
	1	+Known only from Steinheim am Albuch (as Pupa suevica Sandberger, 1875) dated from the Mid Miocene (Astaracian, MN7+8), hence its occurrence in Bełchatów (Beł−B horizon, Orleanian, MN5) shifted its stratigraphic range to the Lower/Mid Miocene limit.

Zasięg czasowy

...	...	@@ -1,0 +1,1 @@
	1	+Lower/Mid Miocene

Object number 1 of type Species.ImageInfoClass added

attachmentRef

gastrocopta 1.jpg