Haroella, Pictet & Bulot, 2025

Pictet, Antoine & Bulot, Luc Georges, 2025, New or poorly known Neocomitidae (Ammonitina, Ammonoida) from the lower Hauterivian sedimentary series of the Jura platform and the Vocontian trough (France and Switzerland), Swiss Journal of Palaeontology (7) 144 (1), pp. 1-24 : 10

publication ID

https://doi.org/10.1186/s13358-024-00343-4

persistent identifier

https://treatment.plazi.org/id/AC080812-3346-1619-3EDE-966F888E8F5E

treatment provided by

Felipe

scientific name

Haroella
status

 

Genus Haroella Bulot, Pictet, Frau & Bryers, 2024 .

Nomen nudum 2022. Haroella gen. nov. —Bryers et al., p. 10.

Nomen nudum 2022. Haroella gen. nov. —Bryers et al., appendix A, fig. S1 A.

* 2024. Haroella gen. nov. —Bulot, Pictet, Frau & Bryers in Bryers et al., appendix A, Supplementary data, Multimedia component 11, fig. 10

Type-species. Haroella charcensis Bulot, Pictet, Frau & Bryers in Bryers et al. (2024).

Emended diagnosis. Small to moderately sized shell, planispiraled, subevolute according to the descriptive terminology proposed by Klug et al. (2015), with whorls slightly overlapping. Vertical to slightly convex umbilical wall. Quadratic to subquadratic whorl section in ephebetic stage, becoming subquadratic-polygonate during growth, always moderately compressed. Greatest thickness situated on the inner quarter of the flanks. Large and smooth siphonal band, weakly rounded in ephebetic stage and rounding more during growth. Umbilical wall, vertical and steep, with umbilical shoulder formed by a rounded corner. Venter tabulate to slightly rounded. Ornamentation always dense and coarse and rather rigid, slightly sinuous, originating near umbilical seam and evolving during ontogenesis. Ribbing in inner whorls composed of main ribs, branching from a marked tubercle on the umbilical edge. Ribbing on intermediate whorls, becoming trituberculated (umbilical, lateral, ventro-lateral) and branching only at lateral tubercles above middle of whorl side. Followed by a bituberculated (umbilical and ventro-lateral) and several monotuberculated (ventro-lateral) intercalated ribs. Ribs weaken strongly on the ventral area, leaving a smooth central stripe. Suture with deeply incised saddles and very asymmetric L.

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