First fossil harvestmen (Arachnida: Opiliones) from Spain and notes on the fossil record of Opiliones Author Palencia, Lorena Author Peñalver, Enrique Author Prieto, Carlos E. Author Poyato-Ariza, Francisco José text Palaeontologia Electronica 2019 5 A 2019-02-28 22 1 1 18 journal article 10.26879/855 1094-8074 11188160 0383B140-3EC0-4E45-904E-6ECBF9DFF202 Order OPILIONES Sundevall, 1833 Suborder indet. Figure 1 Description (specimen LH-29969). Typical harvestman habitus, compact body and slender legs. The eight legs appear radiating closely together. Leg lengths are indicated on Figure 1 . Leg articulations only are clear in three locations ( Figure 1.2 ). Taphonomy. The body of this specimen is poorly preserved, lacking any detail; chelicera and pedipalps are not observable. Anatomical orientation is uncertain due to the poor preservation of the body, which was collapsed in a small area during fossilization. Legs appear radiating very close, nearly together, probably due to this collapsing of the body. Remarks. The habitus is typical of harvestmen, especially that of the suborders Laniatores and Eupnoi . However, no distinctive morphological details such as pedipalps and tarsal claws of legs are preserved. Although most long-legged harvestmen show a typical I–IV leg length pattern (short, longest, short, long), this feature is not discernible in the specimen. A few articulations in the legs can, nonetheless, be observed. The radiation and habitus of the legs are consistent with those of harvestmen. The habitus and the thin legs are similar to those of the family Pholcidae , Order Araneae . This family shows a body clearly divided into two tagmata, but the body of the fossil specimen, in spite of its poor preservation, seems to present fused tagmata (“compact body”). In spite of its unsatisfactory preservation, this specimen is worth reporting because of the Mesozoic fossil record of harvestmen is remarkably scarce.