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    Gattenpleura Weyer 1976

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    Genus <i>Gattenpleura</i> Weyer, 1976 Type species <p> <i>Gattenpleura bartzschi</i> Weyer, 1976: 846; original designation.</p> Diagnosis <p>Genus of the Gattendorfiinae with a discoidal conch with low coiling rate (WER = 1.50–1.75); inner whorls subevolute or evolute, adult stage subinvolute to subevolute. Whorl profile with a depression on the inner flank, umbilical margin raised. Ornament with convex or slightly biconvex, rursiradiate growth lines, shell with or without constrictions. Some species with shallow radial riblets. Suture line with deep, lanceolate or narrowly V-shaped external lobe (as deep as the adventive lobe).</p> Genus composition <p> <i>Gattenpleura bartzschi</i> Weyer, 1976; <i>Gattenpleura pfeifferi</i> Weyer, 1976; <i>Gattendorfia concava</i> Vöhringer, 1960.</p> Remarks <p> <i>Gattenpleura</i> was established by Weyer (1976) for forms that differ from <i>Gattendorfia</i> in two characters, namely the dorsolateral groove and the presence of riblet-like, splitting radial folds on the shell. Here, we change this original definition in such a way that the dorsolateral groove is regarded as a key distinguishing character from <i>Gattendorfia</i> and especially from <i>Weyerella</i>. This means that “ <i>Gattendorfia concava</i> ” is also assigned to <i>Gattenpleura</i>. Weyer (1976) had already pointed out the close relationship; according to this, “ <i>Gattendorfia concava</i> ” should be an almost direct ancestor of “ <i>Gattendorfia molaris</i> ”.</p>Published as part of <i>Korn, Dieter & Weyer, Dieter, 2023, The ammonoids from the Gattendorfia Limestone of Oberrödinghausen (Early Carboniferous; Rhenish Mountains, Germany), pp. 1-230 in European Journal of Taxonomy 882</i> on page 150, DOI: 10.5852/ejt.2023.882.2177, <a href="http://zenodo.org/record/8177581">http://zenodo.org/record/8177581</a&gt

    Gattendorfiidae Bartzsch & Weyer 1987

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    <p> Family <b>Gattendorfiidae</b> Bartzsch & Weyer, 1987</p> <p>[nom. transl. Korn (1994: 69), ex Gattendorfiinae Bartzsch & Weyer, 1987]</p> Diagnosis <p>Family of the superfamily Prionoceratoidea with the sutural formula E A L U I; external lobe lanceolate or slightly pouched; adventive lobe deep, V-shaped or lanceolate and pointed; the lateral lobe has a position on the umbilical wall. Conch in the juvenile stage subevolute or evolute; adult stage involute to evolute, but usually subinvolute. Shell ornament with fine to coarse growth lines, often with rursiradiate direction. Ribs occur in several independent lineages in varying morphology.</p> Included subfamilies <p>Gattendorfiinae Bartzsch & Weyer, 1987; Pseudarietitinae Bartzsch & Weyer, 1987.</p> Remarks <p> In the Treatise revision, Kullmann (2009) expressed a view of the family Gattendorfiidae that is clearly different from previously published concepts (Bartzsch & Weyer 1987, 1988a; Korn 1994; Korn & Klug 2002). His scheme differs, on the one hand, in that the gattendorfiid and pseudarietitid clades are not considered as sister groups and, on the other hand, in that genera such as <i>Acutimitoceras</i> and <i>Stockumites</i> are also placed in the family Gattendorfiidae. The subfamily Acutimitoceratinae is treated there as a junior synonym of the family Gattendorfiidae.</p> <p> Kullmann’s (2009) definition of the family Gattendorfiidae both contains and creates some problems. It states that the family is characterised by a “shell surface with rursiradiate growth lines or ribbing”; however, this only applies to some representatives (<i>Gattendorfia</i>, <i>Zadelsdorfia</i>, <i>Weyerella</i>, <i>Gattenpleura</i>). This does not apply to those genera that we place in the subfamily Acutimitoceratinae. The biggest problem with this scheme, however, is that it cuts the evolutionary line from <i>Stockumites</i> to <i>Nicimitoceras</i> to <i>Imitoceras</i> and, with the placement of the latter genus in the family Prionoceratidae, this would make the family polyphyletic.</p>Published as part of <i>Korn, Dieter & Weyer, Dieter, 2023, The ammonoids from the Gattendorfia Limestone of Gattendorf (Devonian-Carboniferous boundary; Upper Franconia, Germany), pp. 1-61 in European Journal of Taxonomy 883</i> on page 45, DOI: 10.5852/ejt.2023.883.2179, <a href="http://zenodo.org/record/8177861">http://zenodo.org/record/8177861</a&gt

    Gattenpleura Weyer 1976

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    Genus <i>Gattenpleura</i> Weyer, 1976 Type species <p> <i>Gattenpleura bartzschi</i> Weyer, 1976, p. 846; original designation.</p> Diagnosis <p>Genus of the Gattendorfiinae with a discoidal conch with low coiling rate (WER= 1.50–1.75); inner whorls subevolute or evolute, adult stage subinvolute to subevolute. Whorl profile with a depression on the inner flank, umbilical margin raised. Ornament with convex or slightly biconvex, rursiradiate growth lines, shell with or without constrictions. Some species with shallow radial riblets. Suture line with deep, lanceolate or narrowly V-shaped external lobe (as deep as the adventive lobe).</p> Genus composition <p> <i>Gattenpleura bartzschi</i> Weyer, 1976; <i>Gattenpleura pfeifferi</i> Weyer, 1976; <i>Gattendorfia concava</i> Vöhringer, 1960.</p> Remarks <p> <i>Gattenpleura</i> was established by Weyer (1976) for forms that differ from <i>Gattendorfia</i> in two characters, namely the dorsolateral groove and the presence of riblet-like, splitting radial folds on the shell. Here, we change this original definition in such a way that the dorsolateral groove is regarded as a key distinguishing character from <i>Gattendorfia</i> and especially from <i>Weyerella</i>. This means that “ <i>Gattendorfia concava</i> ” is also assigned to <i>Gattenpleura</i>. Weyer (1976) had already pointed out the close relationship; according to this, “ <i>Gattendorfia concava</i> ” should be an almost direct ancestor of both “ <i>Gattendorfia molaris</i> ” and the two newly described species of <i>Gattenpleura</i>.</p>Published as part of <i>Korn, Dieter & Weyer, Dieter, 2023, The ammonoids from the Gattendorfia Limestone of Gattendorf (Devonian-Carboniferous boundary; Upper Franconia, Germany), pp. 1-61 in European Journal of Taxonomy 883</i> on page 51, DOI: 10.5852/ejt.2023.883.2179, <a href="http://zenodo.org/record/8177861">http://zenodo.org/record/8177861</a&gt

    Gattendorfiidae Bartzsch & Weyer 1987

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    <p> Family <b>Gattendorfiidae</b> Bartzsch & Weyer, 1987</p> <p>[nom. transl. Korn (1994: 69), ex Gattendorfiinae Bartzsch & Weyer, 1987]</p> Diagnosis <p>Family of the superfamily Prionoceratoidea with the sutural formula E A L U I; external lobe lanceolate or slightly pouched; adventive lobe deep, V-shaped or lanceolate and pointed; the lateral lobe has a position on the umbilical wall. Conch in the juvenile stage subevolute or evolute; adult stage involute to evolute, but usually subinvolute. Shell ornament with fine to coarse growth lines, often with rursiradiate direction. Ribs occur in several independent lineages in varying morphology.</p> Included subfamilies <p>Gattendorfiinae Bartzsch & Weyer, 1987; Pseudarietitinae Bartzsch & Weyer, 1987.</p> Remarks <p> In the Treatise revision, Kullmann (2009) expressed a view of the family Gattendorfiidae that is clearly different from previously published concepts (Bartzsch & Weyer 1987, 1988a; Korn 1994; Korn & Klug 2002). His scheme differs, on the one hand, in that the gattendorfiid and pseudarietitid clades are not considered as sister groups and, on the other hand, in that genera such as <i>Acutimitoceras</i> and <i>Stockumites</i> are also placed in the family Gattendorfiidae. The subfamily Acutimitoceratinae is treated there as a junior synonym of the family Gattendorfiidae.</p> <p> The definition of the family Gattendorfiidae as done by Kullmann (2009) contains some problems. It states that the family is characterised by a “shell surface with rursiradiate growth lines or ribbing”; however, this only applies to some representatives (<i>Gattendorfia</i>, <i>Zadelsdorfia</i>, <i>Weyerella</i>, <i>Gattenpleura</i>). This does not apply to those genera that we place in the subfamily Acutimitoceratinae. The biggest problem with this scheme, however, is that it cuts the evolutionary line from <i>Stockumites</i> to <i>Nicimitoceras</i> to <i>Imitoceras</i> and, by placing the latter genus in the family Prionoceratidae, would make the family Gattendorfiidae a polyphyletic unit.</p>Published as part of <i>Korn, Dieter & Weyer, Dieter, 2023, The ammonoids from the Gattendorfia Limestone of Oberrödinghausen (Early Carboniferous; Rhenish Mountains, Germany), pp. 1-230 in European Journal of Taxonomy 882</i> on page 114, DOI: 10.5852/ejt.2023.882.2177, <a href="http://zenodo.org/record/8177581">http://zenodo.org/record/8177581</a&gt

    Présentation de l'auteur. Maurice Constantin-Weyer

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    Présentation de l'auteur Maurice Constantin-Weyer à l'occasion de la réédition de son roman La loi du Nord. Né en France, cet auteur a séjourné au Canada, ce qui lui a inspiré ses nombreux récits se déroulant dans le Grand Nord ou dans l'Ouest canadien

    Paprothites Bartzsch & Weyer 1987

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    Genus <i>Paprothites</i> Bartzsch & Weyer, 1987 Type species <p> <i>Pseudarietites westfalicus</i> var. <i>dorsoplana</i> Schmidt, 1924: 52; original designation.</p> Genus diagnosis <p>Genus of the subfamily Pseudarietitinae without ventral keel. Sculpture with simple ribs.</p> Genus composition <p> Central Europe (Schmidt 1924; Vöhringer 1960; Korn & Weyer 2003): <i>Pseudarietites westfalicus</i> var. <i>dorsoplana</i> Schmidt, 1924; <i>Pseudarietites raricostatus</i> Vöhringer, 1960; <i>Paprothites ruzhencevi</i> Korn & Weyer, 2003; <i>Paprothites beckeri</i> sp. nov.; <i>Paprothites kullmanni</i> sp. nov.</p> <p> South China (Ruan 1981; Sheng 1989): <i>Pseudarietites ellipticus</i> Ruan, 1981; <i>Pseudarietites platyventrus</i> Ruan, 1981; <i>Pseudarietites subquadratus</i> Ruan, 1981; <i>Pseudarietites daposhangensis</i> Sheng, 1989.</p> Remarks <p> <i>Paprothites</i> is easily separable from <i>Weyerella</i> in the presence of ribs and from the members of the Pseudarietitinae by the lack of the ventral keel.</p>Published as part of <i>Korn, Dieter & Weyer, Dieter, 2023, The ammonoids from the Gattendorfia Limestone of Oberrödinghausen (Early Carboniferous; Rhenish Mountains, Germany), pp. 1-230 in European Journal of Taxonomy 882</i> on page 171, DOI: 10.5852/ejt.2023.882.2177, <a href="http://zenodo.org/record/8177581">http://zenodo.org/record/8177581</a&gt

    Gattenpleura pfeifferi Weyer 1976

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    <i>Gattenpleura pfeifferi</i> Weyer, 1976 <p>Fig. 26; Table 17</p> <p> <i>Gattenpleura pfeifferi</i> Weyer, 1976: 848, pl. 3 figs 1–7, text-figs 6–8.</p> <p> <i>Gattenpleura pfeifferi</i> – Weyer 1979: pl. 5 fig. 12. — Bartzsch & Weyer 1988: 44, text-fig. 3, photo 5.</p> Diagnosis <p> Species of <i>Gattenpleura</i> with thinly discoidal and involute conch at 30 mm dm (ww/dm ~ 0.40; uw/dm ~ 0.03). Whorl profile weakly depressed (ww/wh ~ 0.75); coiling rate low (WER ~ 1.60). Shallow lateral spiral groove, weak ribs with rursiradiate direction and convex course on the flank.</p> Material examined <p> <b>Holotype</b> GERMANY • Thuringia, Saalfeld-Obernitz, Pfaffenberg; bed 2 (“ <i>Gattendorfia</i> Limestone ”); Bartzsch Coll.; illustrated by Weyer (1976: pl. 3 figs 1–7); MB.C.764.1.</p> <p> <b>Additional material</b> GERMANY • 1 specimen; Upper Franconia, 400 m north-west of Kirchgattendorf; bed 21 (“ <i>Gattendorfia</i> Limestone ”); Denckmann 1912 Coll.; MB.C.765 • 1 specimen; Upper Franconia, 400 m north-west of Kirchgattendorf; bed 21 (“ <i>Gattendorfia</i> Limestone ”); Schindewolf 1934 Coll.; BGRB X13404.</p> Description <p>Specimen MB.C.765 is a somewhat deformed but otherwise relatively well-preserved conch with a diameter of 32 mm (Fig. 26A). It is thinly discoidal with an almost closed umbilicus (ww/dm =0.39; uw/ dm =0.03) and has a low coiling rate (WER =1.61). The whorl profile shows an evenly rounded venter and almost parallel flanks with a shallow depression on the inner flank near the umbilicus caused by a shallow longitudinal groove. The umbilical margin is slightly raised.</p> <p>The ornament shows a change on the last whorl. Initially, only sharp growth lines are visible, but at about 24 mm conch diameter, flat, rounded plications appear, which become coarser on the second half of the last whorl. Their course is first radial from the umbilicus and they bend strongly backwards on the inner flank to form a rather narrow ventral sinus. On the venter the ribs are weaker than on the outer flank. Between the ribs and on the ribs stand sharp, dense growth lines.</p> <p>The smaller specimen BGRB X13404 (Fig. 26B) is 20 mm in diameter and is stouter with a slightly wider umbilicus (ww/dm =0.52; uw/dm=0.07) than in specimen MB.C.765; however, this can be explained by ontogenetic changes. It also shows incipient radial plications and a weaker dorsolateral depression.</p> Remarks <p> <i>Gattenpleura pfeifferi</i> differs from <i>G. bartzschi</i> in the much narrower umbilicus (uw/dm ~ 0.25) and less pronounced dorsolateral depression. The other similar species is <i>Weyerella concava</i>, which has a very similar conch form; however, this species has no ribs.</p>Published as part of <i>Korn, Dieter & Weyer, Dieter, 2023, The ammonoids from the Gattendorfia Limestone of Gattendorf (Devonian-Carboniferous boundary; Upper Franconia, Germany), pp. 1-61 in European Journal of Taxonomy 883</i> on pages 52-53, DOI: 10.5852/ejt.2023.883.2179, <a href="http://zenodo.org/record/8177861">http://zenodo.org/record/8177861</a&gt

    Paprothites ruzhencevi Korn & Weyer 2003

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    <i>Paprothites ruzhencevi</i> Korn & Weyer, 2003 <p>Figs 107–108; Table 104</p> <p> <i>Paprothites ruzhencevi</i> Korn & Weyer, 2003: 100, pl. 1 figs 21–24.</p> <p> <i>Paprothites ruzhencevi</i> – Korn 2006: text-fig.4b–c.</p> Diagnosis <p> Species of <i>Paprothites</i> with a conch reaching 40 mm diameter. Conch at 15 mm dm thinly discoidal, evolute (ww/dm ~0.40; uw/dm ~0.50). Whorl profile at 15mm dm moderately depressed (ww/wh ~1.60); coiling rate low (WER ~1.55). Venter rounded, umbilical margin rounded. On the flank 25 very sharp ribs with concave course. Venter in the adult stage with incipient grooves.</p> Material examined <p> <b>Holotype</b></p> <p>GERMANY • Rhenish Mountains, Hasselbachtal; Hangenberg Limestone, bed 57; Trostheide Coll.; illustrated by Korn & Weyer (2003: pl. 1, figs 21–24) and Korn (2006: text-fig. 4b–c), re-illustrated here in Fig. 107; MB.C.5240.6.</p> <p> <b>Paratypes</b></p> <p>GERMANY • 4 specimens; Rhenish Mountains, Hasselbachtal; Hangenberg Limestone, bed 57; Weyer 1993–1994 Coll.; MB.C.5240.11–14.</p> <p> <b>Additional material</b></p> <p>GERMANY • 40 specimens; Rhenish Mountains, Oberrödinghausen, railway cutting; Hangenberg Limestone, bed 3d1b; Weyer 1993–1994 Coll.; MB.C.31209.1–40.</p> Description <p>Two well-preserved adult specimens from Oberrödinghausen are illustrated here, MB.C.31209.1 (22 mm dm; Fig. 108A) and MB.C.31209.2 (ca. 26 mm dm; Fig. 108B), both 22 mm in diameter. In both, at 22 mm dm, the umbilicus has exactly half of the width of the conch diameter, but the specimens differ in the shape of their whorl profile. The ww/wh ratio is 1.45 in specimen MB.C.31209.1 but 1.65 in specimen MB.C.31209.2. Both specimens show coarse ribbing. In specimen MB.C.31209.1, there are 28 ribs on the last volution, about 25 in the penultimate volution and also 25 in the volution before. The ribs are sharp and extend with a concave arch across the flank. Both specimens show two barely visible longitudinal grooves on the venter.</p> Remarks <p> <i>Paprothites ruzhencevi</i> differs from <i>P. dorsoplanus</i> and <i>P. raricostatus</i> in the shape and course of the ribs, which are rounded and extend almost straight across the flanks in the latter two species. Both species have a much narrower umbilicus (uw/dm = 0.35–0.40) than <i>P. ruzhencevi</i> (uw/dm ~0.50). <i>Paprothites ruzhencevi</i> differs from <i>P. kullmanni</i> sp. nov. in the more strongly depressed whorl profile (ww/wh ~1.50 or more in <i>P. ruzhencevi</i> but only ~ 1.25 in <i>P. kullmanni</i>) and in the lack of a midventral groove.</p>Published as part of <i>Korn, Dieter & Weyer, Dieter, 2023, The ammonoids from the Gattendorfia Limestone of Oberrödinghausen (Early Carboniferous; Rhenish Mountains, Germany), pp. 1-230 in European Journal of Taxonomy 882</i> on pages 177-178, DOI: 10.5852/ejt.2023.882.2177, <a href="http://zenodo.org/record/8177581">http://zenodo.org/record/8177581</a&gt
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