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Preserved structures include: the cephalothoracic shield with a short rostrum, a well-developed cervical groove and anterior coarse tuberculation the pleon, with a characteristic trapezoidal first tergite and the second tergite representing the largest of the series the appendages including (fragmentary) maxillipeds two and three, and the five walking limbs the tail fan with uropods with both sub-triangular rami possessing bulging anterior edges and one (endopod) or two (exopod) keels running in parallel to the anterior bulging edge, the exopod lacking a diaresis, and the telson being sub-rectangular with a median suture.
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While most fossil upogebiids are only known fragmentarily, the specimens described here are preserved as relatively complete articulated specimens. * Department of Earth and Biological Sciences, Loma Linda University, Loma Linda California, 92350, United States of America.ģ Instituto de Geología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Coyoacán, 04510 México, D.F., México.Ĭorrected manuscript received: October 21, 2012.Ĭonstruction excavation within member "B" of the middle Eocene-aged Santiago Formation at Bressi Ranch in the southern part of the City of Carlsbad, California, USA, have produced exceptionally preserved upogebiid fossils. Vega 3ġ Department of Cytology and Evolutionary Biology, Zoological Institute and Museum, University of Greifswald, Soldmannstrasse 23, 17487 Greifswald, Germany. Un upogébido (Decapoda: Reptantia) con preservación excepcional en el Eoceno de CaliforniaĬarolin Haug 1,*, Torrey Nyborg 2, Francisco J. An exceptionally preserved upogebiid (Decapoda: Reptantia) from the Eocene of California