Millipedes from the Grès à Voltzia, Triassic of France, with comments on Mesozoic millipedes (Diplopoda: Helminthomorpha: Eugnatha)

Abstract

Hannibaliulus wilsonae, n. gen., n. sp. is described from a series of ten specimens from the early Triassic Grès à Voltzia Lagerstätte of northeast France. e best specimens (holotype and paratype) show a probably equal number of around 44 diplosegments. e a nities of the new species appear to be with the Order Callipodida, but clear apomorphies of that order are not observable on the specimens, both of which appear to be female. Other records of Mesozoic diplopods are brie y discussed and evaluated.

Dwarfs under dinosaur legs: a new millipede of the order Callipodida (Diplopoda) from Cretaceous amber of Burma

“…Furthermore, the Triassic fossil is known to have a body composed of 40–44 body rings and a much longer length (ca 55 mm). Ozopores, pleurotergal setae and spinnerets have not been detected in H.wilsonae (Shear et al 2009).…”

“…Burmanopetaluminexpectatum gen. nov. et sp. nov. can be readily distinguished from Hannibaliuluswilsonae Shear et al 2009, a possibly nematophoran callipodid-like millipede of early Triassic (Anisian) age (ca 243 Mya) by having 'normal' undivided metazonites (vs divided by a wide, shallow transverse depression into anterior and posterior parts, with ventral margins strongly rebordered) and eyes composed of only five ommatidia (vs eyepatches with numerous ommatidia). Furthermore, the Triassic fossil is known to have a body composed of 40–44 body rings and a much longer length (ca 55 mm).…”

“…Just recently, two species of Siphoniulida (Liu et al 2017a) and one species of Siphonophorida (Jiang et al 2019), all belonging to extant genera, have been added to the list. So far there is no described non-amber fossil which can be definitely placed in the order Callipodida, but Shear et al (2009) hypothesized that Hannibaliuluswilsonae Shear, Selden & Gall, 2009 from the Triassic of France could be a representative of Callipodida, although clear apomorphies of the order were not observable.…”

A new millipede (Diplopoda, Helminthomorpha) from the Middle Triassic Luoping biota of Yunnan, Southwest China

“…Fossil millipedes are mainly documented from the Paleozoic because they are relatively abundant in the extensive coal-forest deposits of the upper Carboniferous; they are also well documented in amber deposits, particularly those of the Cenozoic. Only rarely have they been described from the Mesozoic (Dzik, 1981; Jell, 1983; Duy-Jacquemin and Azar, 2004; Rasnitsyn and Golovatch, 2004; Shear et al, 2009; Shear and Edgecombe, 2010; Edgecombe, 2015; Liu et al, 2017). Mesozoic occurrences include two described genera from the Triassic (France and central Siberia), one genus from the Jurassic of Australia, and six genera from the Cretaceous (Mexico, Europe, Lebanon, Mongolia, and Myanmar).…”

Primer registro fósil de un Myriapoda (Polydesmida) para el Pleistoceno Tardío de la localidad de La Palmera de San Carlos, provincia de Alajuela, Costa Rica

“…De igual forma el Mesozoico, se caracteriza en general, con escasos registros aislados (Shear et al, 2009); el Cenozoico, también se caracteriza por unos pocos registros de Myriapoda, preservados en ámbar y asignables principalmente a taxones vivientes (Hoffman, 1969;SantiagoBlay y Poinar, 1992;Shear y Edgecombe, 2010;Riquelme et al, 2014a y b).…”