Cuchiadromites jadeae, a new genus and species of primitive crab (Crustacea: Decapoda: Podotremata) from the Aptian of Cantabria (Spain), with comments on its peculiar surface ornament

Palaeoebiological implications of cuticle morphology, microstructure and formation in modern and fossil Daira (Decapoda, Brachyura, Dairoidea)

“…This type of mushroom-like tubercles is not exclusive of the genus Daira and other fossil and extant taxa show this or a similar ornamentation, covering partial or completely the dorsal carapace and pereiopods. Some fossil podotreme brachyurans from the Upper Cretaceous, like Cuchiadromites Ossó et al, 2021;Marylireidus Rathbun, 1935;Eucorystes Bell, 1863;Ferroranina van Bakel et al, 2012 andCretacoranina Mertin, 1941, show similar fungiform ornamentation (see Haj & Feldmann, 2002;Waugh et al, 2009;van Bakel et al, 2012;Ossó et al, 2021), or fungiform nodes according to Waugh et al (2009), also present in some species of the modern genus Symethis (see Waugh et al, 2009). In the Eocene, some heterotreme brachyurans show this ornamentation (including the parthenopoids Phrynolambrus Bittner, 1893; and Aragolambrus Ferratges et al, 2019) in the dorsal surface of the carapace (e.g., Bittner, 1893, figs.…”

“…In contrast, the latter off ers important information about adaptations to diff erent environments and protection against predators (i.e., Guinot, 1979;Davie et al, 2015b). The presence of mushroom-like tubercles in modern and fossil decapods has been documented in several clades that independently developed such peculiar structures (Bittner, 1893;Serène & Soh, 1976;Guinot, 1976Guinot, , 1979Haj & Feldmann, 2002;Davie et al, 2015b;De Angeli & Caporiondo, 2017;Ossó et al, 2021;Cluzaud & Ossó, 2022). However, most of…”