Furca (Latin for "fork") is an extinct genus of marrellomorph arthropod known from the Sandbian stage (upper Ordovician period) of the Czech Republic, [1] with a single currently described species, Furca bohemica.

Furca, a prehistoric arthropod; Furca (springtail), an anatomical structure in springtail entognaths. Caudal furca ("tail fork"), part of the telson of some crustaceans; Furcula, the wishbone of birds and some dinosaurs; Furcula a genus of Noctuid moths; Any …

Furca is an extinct genus of marrellomorph arthropod that lived in Czech Republic and Morocco during the Late Ordovician. Furca is characterized by a broad head shield with three prominent spine pairs: an anterolateral, mediolateral and posterolateral.

The furcula, or furca is a forked, tail-like appendage. It is present in most species of springtails , and in them it is attached ventrally to the fourth abdominal segment. The organ most often is present in species of Collembola that lives in the upper soil layers where it is used for jumping to avoid predators. [ 1 ]

The meaning of FURCA is a forked process. a forked process:; an internal skeletal projection from the ventral thoracic wall in certain insects… See the full definition

2012年1月12日 · The enigmatic marrellomorph arthropod Furca bohemica from the Upper Ordovician Letná Formation, is redescribed. Based on existing museum specimens and new material collected from the southern slope of Ostrý Hill (Beroun, Czech Republic), the morphology and taphonomy of F. bohemica is reappraised and expanded to produce a new anatomical ...

furca any fork-like structure, such as that formed by the last two abdominal segments in some arthropods or which supports the two spongy pads on the proboscis of some insects. Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

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A some-what similar instrument was used in carrying burdens on the neck, and occurs in the reliefs of the Column of Trajan. For the furca in crucifixion, see PATIBULUM 5.

Furca is a soft-bodied marrellamorph arthropod known from only a couple of Ordovician sites worldwide. It was among the first softbodied fossils from the Fezouata lagerstatten to be recognized as related to a similar animal in the famous Burgess Shale.