Un nouveau genre de dipneuste pour l’espèce <i>Ceratodus tuberculatus</i> Tabaste, 1963

Une plaque dentaire bien conservée du dipneuste Ceratodus tuberculatus Tabaste, 1963 de l’oasis de Kharga (Égypte) permet une révision de son statut générique. Des comparaisons avec les plaques dentaires du genre fossile Ceratodus et celles du genre actuel Neoceratodus montrent des différences morphologiques significatives. En conséquence, la création du genre Retodus n. gen. est proposée. Les plaques dentaires de R. tuberculatus n. comb. sont caractérisées entre autres par quatre crêtes transversales arrondies et des spécimens adultes de grande taille. L’extension stratigraphique de R. tuberculatus n. comb. s’étend de l’Albien (Crétacé inférieur, sud de l’Algérie) au Campanien (Crétacé supérieur de Dakhleh et Kharga, en Égypte). Des restes connus au Niger datent du Maastrichtien (Crétacé supérieur).A tooth plate of the large lungfish referred to Ceratodus tuberculatus Tabaste, 1963 from Kharga Oasis, Egypt, allows reconsideration of its generic status. Comparisons with fossil Ceratodus and living Neoceratodus demonstrate the generic distinction of this taxon and Retodus n. gen. is proposed for this large dipnoan. Tooth plates of R. tuberculatus n. comb. are characterised by four transverse ridges, broadly rounded crests, a reticular pattern of ridges and hollows, and large adult size. The stratigraphic time span for specimens assigned to R. tuberculatus n. comb. is Albian-Early Cretaceous of southern Algeria, to Campanian-Late Cretaceous of Dakhleh and Kharga Oases, Egypt, and Maastrichtian Late Cretaceous of Niger.</p

Retodus Churcher & Iuliis & Kleindienst 2006, n. gen.

Genus &lt;i&gt;Retodus&lt;/i&gt; n. gen. &lt;p&gt; TYPE SPECIES. &mdash; &lt;i&gt;Ceratodus tuberculatus&lt;/i&gt; Tabaste, 1963.&lt;/p&gt; &lt;p&gt; ETYMOLOGY. &mdash; From the Latin, &lt;i&gt;rete&lt;/i&gt;, net; - &lt;i&gt;odus&lt;/i&gt;, Latinised Greek -&Oacute;&delta;&omicron;&upsi;́&upsi;&sigmav;, toothlike, referring to a network of ridges on the occlusal surface of a tooth plate.&lt;/p&gt; &lt;p&gt; DIAGNOSIS. &mdash; The same as &lt;i&gt;Retodus tuberculatus&lt;/i&gt; n. comb.&lt;/p&gt; &lt;p&gt;REMARKS&lt;/p&gt; &lt;p&gt; The new lungfish tooth plate (ROM 47638) reported here preserves features unknown in the species previously known as &lt;i&gt;Ceratodus tuberculatus&lt;/i&gt; and indicates that the species cannot be referred to an already described genus. Although insufficient material of the species is known to permit a phylogenetic analysis, it is apparent that it forms a distinct clade, and thus merits generic distinction as &lt;i&gt;Retodus&lt;/i&gt; n. gen.&lt;/p&gt;Published as part of &lt;i&gt;Churcher, Charles S., Iuliis, Gerardo De &amp; Kleindienst, Maxine R., 2006, A new genus for the Dipnoan species Ceratodus tuberculatus Tabaste, 1963, pp. 635-647 in Geodiversitas 28 (4)&lt;/i&gt; on page 637, DOI: &lt;a href="http://zenodo.org/record/4650971"&gt;10.5281/zenodo.4650971&lt;/a&gt

Elinor Wight Gardner: Pioneer Geoarcheologist, Quaternary Scientist and Geomorphologist

Elinor Wight Gardner (1892–1981) was the first female geologist who worked and published as a geoarcheologist. During her career, she worked in arid lands of North Africa, Mediterranean and the Near East, and was regarded as a pioneering geoscientist who made important contributions in multiple fields, including archeology, geomorphology, paleontology and Quaternary science. Despite her ground-breaking work at many archeological sites, Gardner’s impact has been largely unrecognized. Few details are known about her personal life; she was a private and reserved person who left limited first-hand accounts of her opinions and motivations. Gardner worked with charismatic figures such as her life-long friend and primary collaborator, the archeologist Gertrude Caton Thompson (1888–1985). This biography synthesizes primary sources and draws insights about Gardner’s character from her bibliography, publications and notebooks, and mentions by contemporary peers. Much attention has focused on the historical “ancestral passions” of characters working in the fields of geology and archeology, with much emphasis on the ‘founding fathers’ and significantly less recognition of its ‘grandmothers’. We bring attention to the full scope of Gardner’s insightful contributions through analysis of her important collaborative research projects linking archeology and landscape studies during the early twentieth century