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1
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Mineral shell components in Cepaea nemoralis (L.): differences between colour morphs and relations with structural shell characters

100%
Rosin Z. M., Lesicki A., Tryjanowski P., Kobak J.
Folia Malacologica
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2016
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tom 24
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nr 1
2

Anomalies of soft body parts in Acicula polita [Hartmann, 1840], Deroceras laeve [O.F.Muller, 1774] and Deroceras reticulatum [O.F.Muller, 1774] [Mollusca, Gastropoda]

100%
Jackiewicz M., Koralewska-Batura E., Lesicki A.
Biological Bulletin of Poznań
|
1998
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tom 35
|
nr 1
3

The structures of the shell, reproductive organs and radula of the Macrogastra plicatula [Draparnaud, 1801] [Clausiliidae, Gastropoda]

100%
Szybiak K.
Biological Bulletin of Poznań
|
1996
|
tom 33
4

Shell morphology, biometry and distribution of some marine interstitial testate amoebae [Sarcodina: Rhizopoda]

100%
Golemansky V., Todorov M.
Acta Protozoologica
|
2004
|
tom 43
|
nr 2
5
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Late Triassic spinicaudatan crustaceans from Southwestern Poland

100%
Olempska E.
Acta Palaeontologica Polonica
|
2004
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tom 49
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nr 3
An assemblage of well−preserved spinicaudatan crustaceans (“conchostracans”) is described from lacustrine late Carnian claystone at Krasiejów in southwestern Poland. Their shell microstructure is similar to that in extant spinicaudatans. Five species identified there are assigned to the genera Laxitextella, Menucoestheria (first record in the European Triassic), and Menucoestheria bocki sp. nov. and Krasiestheria parvula gen. et sp. nov. are erected. Specimens of Laxitextella laxitexta are the most abundant, comprising nearly half of the assemblage, those of Menucoestheria bocki one quarter, Laxitextella sp. A, Menucoestheria? sp., and Krasiestheria parvula form a minor component. Their ecological setting was probably similar to Recent relatives: temporary ponds of fresh water. The Late Triassic fauna in the German part of the same basin is closely similar to that in Poland. In Europe, the stratigraphic range of Laxitextella laxitexta is limited to the Middle Keuper (middle–late Carnian).
6
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The Early Cambrian [Botomian] stem group brachiopod Mickwitzia from Northeast Greenland

100%
Skovsted C. B., Holmer L. E.
Acta Palaeontologica Polonica
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2003
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tom 48
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nr 1
The problematic brachiopod Mickwitzia Schmidt, 1888 is re−described based on new material of M. cf. occidens Walcott, 1908 from the Early Cambrian (Botomian) Bastion and Ella Island formations of Northeast Greenland. Etched material demonstrates that Mickwitzia has a lingulid−like juvenile (“larval”) shell with trails of nick−points, reflecting the movement of marginal setae. Juvenile and early mature ventral valves have a lingulid−like pseudointerarea with a pedicle groove. The shell of M. cf. occidens is only partially phosphatic, in particular around the juvenile–early mature shell in both valves. The phosphatic shell includes at least two types of cylindrical structures: (1) slender columns identical with the columns of acrotretoid brachiopods and (2) relatively thicker tubes which may be open to the exterior surface and have internal striations (on the ventral pseudointerarea). The striations are most likely imprints of microvilli and these tubes can be inferred to have contained setae. The thinner linguliform columns and thicker setigerous striated tubes are considered to be homologous with identical structures in the sellate and mitral sclerites of the problematic Micrina, which has been identified as a probable primitive stem group of the Brachiopoda. Mickwitzia represents a more derived member of the stem group Brachiopoda.
7
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Connecting ring structure and its significance for classification of the orthoceratid cephalopods

80%
Mutvei H.
Acta Palaeontologica Polonica
|
2002
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tom 47
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nr 1
The connecting ring in orthoceratids is composed of two calcified layers: an outer spherulitic−prismatic and an inner calcified−perforate. The spherulitic−prismatic layer is a direct continuation of that layer in the septal neck, whereas the calcified−perforate layer is a structurally modified continuation of the nacreous layer of the septal neck. The latter layer is traversed by numerous pores which are oriented either transversally to the siphuncular surface, or have a somewhat irregularly anastomosing course. The connecting ring structure is positively correlated to the dorsal position of the scars of the cephalic retractor muscles. A similar type of connecting ring and a dorsal postion of retractor muscle scars also occur in lituitids, previously assigned to tarphyceratids, and in baltoceratids, previously assigned to ellesmeroceratids. These two taxa are therefore included in the suborder Orthoceratina, which, together with the suborder Actinoceratina, are assigned to the order Orthoceratida Kuhn, 1940.
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