26,609 research outputs found
Micromeriella aureola Klug 1832
No full textMicromeriella aureola (Klug, 1832) Specimens examined: UAE: Khor al-Khwair, 1♀, 5.viii.2009, leg. AvH. Wadi Maidaq, 1♀, 5.xii.2007, leg. AvH. Wadi Shawkah, 1♀, 15.iii.2011, leg. AvH. Discussion: The species was recorded as Lobhargita aureola (Klug, 1832), by Schulten (2008), the record being based on a single female from Wadi Maidaq. Distribution: Canary Islands, northern and northeastern Africa to Arabia and Iran.Published as part of Christian Schmid-Egger, 2017, Order Hymenoptera, families Scoliidae and Thynnidae, pp. 336-340 in Arthropod fauna of the UAE 6 on page 6, DOI: 10.5281/zenodo.120710
Early Carboniferous coiled nautiloids from the Anti-Atlas (Morocco)
Full text linkKorn, Dieter, Klug, Christian (2023): Early Carboniferous coiled nautiloids from the Anti-Atlas (Morocco). European Journal of Taxonomy 885: 156-194, DOI: https://doi.org/10.5852/ejt.2023.885.2199, URL: http://dx.doi.org/10.5852/ejt.2023.885.219
Mature Modifications and Sexual Dimorphism
Full text linkAllometric growth between different parts of the shell often hampers the identification of mollusk shells, particularly in such cases where preadult shell growth varies strongly. Especially in gastropods, the terminal aperture is often less variable and yields morphological information essential for species determination (e.g. Vermeij 1993; Urdy et al. 2010a, b). In fossil mollusk shells, the adult aperture (peristome)is often missing, partially due to an early death, and partially due to destructive processes, which occurred post mortem (taphonomy). Therefore, the entire shell
ontogeny is known only from a small fraction of all ammonoid taxa (e.g., Landman et al. 2012). Nevertheless, knowledge of the adult shell of ammonoids is very
important since it can yield morphological information essential for systematics and for the reconstruction of various aspects of their paleobiology
Describing Ammonoid Conchs
No full textIntroduction: Because ammonoid jaws are rare (Tanabe et al. 2015) and preserved soft parts as well as radulae (Klug and Lehmann 2015; Kruta et al. 2015) are even rarer, most paleontologists are limited in the available morphological information to the conch when describing ammonoids. Taking the great diversity and disparity as well as the over 300 Ma of the clade’s existence into account, it becomes obvious that the different ammonoid clades have divergent sets of characters requiring descriptive procedures adapted to the requirements
Towards a Christian Philosophy
No full textAuthor did not sign the LAC Non-Exclusive License form.The relationship between philosophy and Christianity has, of course, a long history, as do the discussions of that relationship. My own position is not dissimilar to that of many of the early Church Fathers, though of course that position must be elaborated differently for various historical and personal reasons, and hopefully enriched by attention to the history of Western philosophy. As with all such relations, one's understanding of this relation has a lot to do with one's understanding of the terms involved. To promote the possibility of "Christian philosophy" is also to comment on that "and" which might be understood to relate two otherwise distinct and irreconcilable terms. In the end I claim this "and" must be understood as that "love" which defines philosophy as the "love of wisdom" (and finally, the wisdom of love), and does so in terms which (almost) merge-with the surprising assistance of such thinkers as Martin Heidegger, Jacques Derrida, and Paul Ricoeur-with those of the Church Fathers cited. On the one hand, I intend nothing but the historical, orthodox, and catholic understanding of Christianity, especially with regard to the central figure of Jesus the Christ, the Trinitarian God whom He embodies, represents, and reveals, and the Scriptures given as The Bible. On the other hand, I present the specifically philosophical pertinence of this unique Person as such emerges from the texts of the "philosophers" considered, and in a manner which I claim does not force the issue by reading into their texts what is not there. Attending to a (Christian) philosophical reflection on (Christian) philosophy also offers elaborations of inherited doctrines, both Christian and philosophical, including a way to read and think unique to the outcome. Such is the adventure of this current work
Endolobus rota Korn & Klug 2023, sp. nov.
No full text<i>Endolobus rota</i> sp. nov. <p>urn:lsid:zoobank.org:act: 6E9B29A6-1308-4860-B96A-1C2E1B414621</p> <p>Fig. 11; Table 4</p> Diagnosis <p> Species of <i>Endolobus</i> with pachyconic, subinvolute conch (ww/dm ~0.75; uw/dm ~ 0.25), whorl profile moderately compressed (ww/wh ~ 1.60) with slightly flattened venter and broadly rounded ventrolateral shoulder. Coiling rate extremely high (WER ~3.45), whorls not embracing. Ventrolateral shoulder with very low nodes. Suture line with very broad and shallow lobe on the venter and without internal lobe.</p> Etymology <p> From the Latin ‘ <i>rota</i> ’, meaning ‘wheel’, because of the conch shape.</p> Material examined <p> <b>Holotype</b> MOROCCO • Anti-Atlas, southeast of Gara el Itima, 31.5 km east-northeast of Taouz; Zrigat Formation; Korn & Ebbighausen 2007 Coll.; illustrated in Fig. 11; MB.C.31289.</p> Description <p>Specimen MB.C.31289 is a fragment of a specimen with about 85 mm conch diameter, consisting of three chambers and a short part of the body chamber with about 63 mm whorl width (Fig. 11A). At a whorl height of 39 mm, it has a ww/wh ratio of 1.60, but this ratio increases markedly during the previous half volution. The whorl profile is rounded-triangular with a broad venter, a broadly rounded ventrolateral shoulder and a nearly semicircular area consisting of flanks and dorsum (Fig. 11A). A concave dorsal whorl zone does not exist. One large and very low ventrolateral node is visible on the fragment. The suture line extends with a wide and shallow lobe across the venter; it forms a low saddle on the flank and does not possess an internal lobe (Fig. 11B).</p> Remarks <p> <i>Endolobus rota</i> differs from the other Early Carboniferous species of the genus mainly in the very low and broad nodes on the ventrolateral margin. Another criterion is the lack of whorl overlap, but this may be due to the relatively small size of the holotype when compared with the North American species of <i>Endolobus</i>.</p>Published as part of <i>Korn, Dieter & Klug, Christian, 2023, Early Carboniferous coiled nautiloids from the Anti-Atlas (Morocco), pp. 156-194 in European Journal of Taxonomy 885</i> on pages 171-172, DOI: 10.5852/ejt.2023.885.2199, <a href="http://zenodo.org/record/8222417">http://zenodo.org/record/8222417</a>
Temnocheilus aubrechtovae Korn & Klug 2023, sp. nov.
No full text<i>Temnocheilus aubrechtovae</i> sp. nov. <p>urn:lsid:zoobank.org:act: 51FDC5C3-01AA-47F6-B678-F67E2C360F4A</p> <p>Fig. 7; Table 2</p> Diagnosis <p> Species of <i>Temnocheilus</i> with thickly pachyconic, subevolute conch (ww/dm ~0.80; uw/dm ~0.35); whorl profile strongly depressed, rounded-trapezoidal (ww/wh ~ 2.05), venter broadly rounded, ventrolateral shoulder angular with large, elongated longitudinal nodes (about 10 per whorl). Whorls weakly embracing. Shell surface almost smooth.</p> Etymology <p>Named after Martina Aubrechtová, in honour of her studies on Palaeozoic nautiloids.</p> Material examined <p> <b>Holotype</b> MOROCCO • Anti-Atlas, region south-west of Rissani; basal Mougoui Ayoun Formation; Karaoui Coll.; illustrated in Fig. 7; PIMUZ 39511.</p> Description <p>Holotype PIMUZ 93511 is a slightly deformed but otherwise rather well-preserved specimen with a conch diameter of 54 mm (Fig. 7). The last quarter of the last preserved whorl belongs to the body chamber. The conch is thickly pachyconic to cadiconic and subevolute with a high coiling rate (WER =2.04–2.21). The whorl profile is broadly trapezoidal (ww/wh 1.88 to 2.14) with a very broadly and continuously rounded venter; the ventrolateral shoulder is narrowly rounded. The nodes are about twice as long as they are wide and their spacing is equal to their length. There are ten such nodes on the last whorl, giving the ventrolateral shoulder a conspicuous coronate appearance.</p> Remarks <p> <i>Temnocheilus aubrechtovae</i> sp. nov. differs from the other Early Carboniferous species of the genus in the shape of the venter, which is either nearly flat (e.g., <i>T. coronatus</i>, <i>T. imazighenorum</i> sp. nov.) or slightly concave (e.g., <i>T. ventroconcavum</i>). <i>Temnocheilus coronatiformae</i> has a similar conch shape but differs from <i>T. aubrechtovae</i> in the much smaller and more numerous ventrolateral nodes (about 15 per volution).</p>Published as part of <i>Korn, Dieter & Klug, Christian, 2023, Early Carboniferous coiled nautiloids from the Anti-Atlas (Morocco), pp. 156-194 in European Journal of Taxonomy 885</i> on pages 165-166, DOI: 10.5852/ejt.2023.885.2199, <a href="http://zenodo.org/record/8222417">http://zenodo.org/record/8222417</a>
Liroceras karaouii Korn & Klug 2023, sp. nov.
No full text<i>Liroceras karaouii</i> sp. nov. <p>urn:lsid:zoobank.org:act: 2EDCD119-FDE9-426A-9547-A89E8AA520F4</p> <p>Fig. 17; Table 7</p> Diagnosis <p> Species of <i>Liroceras</i> with thickly pachyconic, subinvolute conch (ww/dm ~0.75; uw/dm ~0.25), whorl profile moderately depressed (ww/wh ~ 1.65) with broadly rounded venter and subangular umbilical margin. Coiling rate very high (WER ~ 2.65), whorls very weakly embracing (IZR ~0.17). Suture line nearly straight.</p> Etymology <p>Named after Driss Karaoui (Hassilabied), the collector of the specimen.</p> Material examined <p> <b>Holotype</b> MOROCCO • Anti-Atlas, region south-west of Rissani; basal Mougoui Ayoun Formation; Karaoui Coll.; illustrated in Fig. 17; PIMUZ 39515.</p> Description <p>Holotype PIMUZ 39515 is a corroded, desert-polished specimen with a phragmocone diameter of about 46 mm (Fig. 17). It is fully septate and has about 22 chambers in the last volution. It is, at 46 mm in conch diameter, thickly pachyconic and subinvolute (ww/dm=0.77; uw/dm=0.25) with a strongly depressed, reniform whorl profile (ww/wh=1.65), a very small whorl overlap zone (IZR= 0.17) and a very high coiling rate (WER ~ 2.65). The whorl profile is crescent-shaped and widest at the subangular umbilical margin. The umbilical wall is flattened and slightly oblique. The suture line extends nearly linearly across the flanks and venter.</p> Remarks <p> <i>Liroceras karaouii</i> sp. nov. differs from <i>L. vermis</i> sp. nov. in the subangular umbilical margin and in the slightly wider umbilicus (uw/dm ~ 0.25 in <i>L. karaouii</i> but only uw/dm ~ 0.20 in <i>L. vermis</i>). This shape of the umbilicus is also the most important distinguishing character from the other species of the genus. The pronounced umbilical margin in <i>L. karaouii</i> can be seen as a plesiomorphic character, which transforms from the possible evolutionary lineage from <i>Bistrialites</i> to <i>Liroceras</i>.</p>Published as part of <i>Korn, Dieter & Klug, Christian, 2023, Early Carboniferous coiled nautiloids from the Anti-Atlas (Morocco), pp. 156-194 in European Journal of Taxonomy 885</i> on pages 180-181, DOI: 10.5852/ejt.2023.885.2199, <a href="http://zenodo.org/record/8222417">http://zenodo.org/record/8222417</a>
Temnocheilus imazighenorum Korn & Klug 2023, sp. nov.
No full text<i>Temnocheilus imazighenorum</i> sp. nov. <p>urn:lsid:zoobank.org:act: 84E662FC-B0AB-4F6C-A69D-FD82103B2127</p> <p>Fig. 6; Table 1</p> Diagnosis <p> Species of <i>Temnocheilus</i> with thinly pachyconic, subevolute conch (ww/dm ~0.65; uw/dm ~0.38); whorl profile moderately depressed, trapezoidal (ww/wh ~1.85), venter flattened, ventrolateral shoulder angular with elongated longitudinal nodes. Whorls very weakly embracing. Shell surface almost smooth.</p> Etymology <p>Named after the Imazighen, the ethnic group indigenous to the Maghreb region of North Africa.</p> Material examined <p> <b>Holotype</b></p> <p>MOROCCO • Anti-Atlas, east of Gara el Itima, 36 km east-northeast of Taouz; uppermost Zrigat Formation; Ebbighausen & Korn 2004 Coll.; illustrated in Fig. 6; MB.C.31291.</p> Description <p>Holotype MB.C.31291 is a somewhat weathered specimen 105 mm in diameter, allowing the study of two whorls (Fig. 6). The conch is barrel-shaped, thinly pachyconic and subevolute (ww/dm=0.64; uw/ dm =0.38) with a very high coiling rate (WER= 2.28) and weakly embracing whorls. The whorl profile is trapezoidal with a flattened venter, an angular ventrolateral shoulder and flattened flanks plus umbilical wall. On the penultimate whorl, the ventrolateral shoulder bears eight longitudinally elongate nodes per half volution; they are much weaker on the last volution. The shell surface appears to be smooth.</p> Remarks <p> <i>Temnocheilus imazighenorum</i> sp. nov. is similar to <i>T. coronatus</i> but differs in the more compressed conch (ww/dm ~ 0.65 in <i>T. imazighenorum</i> but ~ 0.75 in <i>T. coronatus</i>), in the less depressed whorl profile (ww/wh ~ 1.85 in <i>T. imazighenorum</i> but ~ 2.25 in <i>T. coronatus</i>) and in the more flattened venter, which is broadly arched in <i>T. coronatus</i>. <i>Temnocheilus coronatiformae</i> differs in the slightly convex venter.</p>Published as part of <i>Korn, Dieter & Klug, Christian, 2023, Early Carboniferous coiled nautiloids from the Anti-Atlas (Morocco), pp. 156-194 in European Journal of Taxonomy 885</i> on pages 163-164, DOI: 10.5852/ejt.2023.885.2199, <a href="http://zenodo.org/record/8222417">http://zenodo.org/record/8222417</a>
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