Siphonophora sp.

Riquelme, Francisco & Hernández-Patricio, Miguel, 2018, The millipedes and centipedes of Chiapas amber, Check List 14 (4), pp. 637-646 : 638

Siphonophora sp. indet.

Referred material. 2 specimens: CPAL.102: adult male, complete specimen ( Fig. 1A–C); MALM.21: adult of indeterminate sex, complete specimen.

Locality. Mexico, Chiapas: Simojovel: Guadalupe Victoria site, 17°07ʹ58ʺ N, 092°48ʹ19ʺ W.

Identification. Body slender and elongated; head without eyes, extended into a beak, antennae straight, wide and elongated, fully visible in CPAL.102 ( Fig. 1A–C), trunk with about 44 rings in CPAL.102 and 72 in MALM.21, granulated dorsal sculpture in the metategite. Sex is indeterminable in MALM.21 by the position of the body. Both specimens represent the first fossil record of the family Siphonophoridae in Chiapas amber.

Remarks. Extant representatives of Siphonophorida in Mexico are currently found in the northern states of Sonora, Baja California Sur, Nuevo León, and Tamaulipas. They also found in the southern states of Veracruz and Yucatan ( Bueno-Villegas et al. 2004).

Subterclass Eugnatha Attems, 1898

Superorder Juliformia Attems, 1926

Order Spirobolida Bollman, 1893