own genus, Morenomerceraria, but the genus name has since no use since. Palaeociconia cristata has since been synonymized with Patagornis marshi. P. lemoinei and P. bachmanni are now species of Psilopterus. Moreno's rival, Ameghino, also unknowingly found or described many fossils of Patagornis marshi from the Miocene deposits in Santa Cruz, many of the fossils being collected by Ameghino's brother Carlos Ameghino. In August of 1891, Ameghino named Tolmodus inflatus based on a fragment of the right premaxilla that had been collected by Carlos in the same middle Miocene deposits in Santa Cruz. Ameghino originally considered the taxon an edentate mammal related to Phorusrhacos, but 2 months later in June he synonymized the two and realized that they were actually flightless carnivorous birds, a conclusion made earlier by Moreno. Ameghino over several years amassed many Patagornis fossils, many of which were described in his 1895 monograph on Patagonian fossil birds. The most complete skeleton (BMNH-A516) includes a complete skull and mandible, one of the first complete Phorusrhacid skulls known, and many limb elements as well as a complete pelvis. Another synonym of Patagornis marshi was named by Ameghino in 1895, Phororhacos modicus, based on a humerus and tarsometatarsus from Santa Cruz and another mistakenly assigned fossil was a premaxilla wrongfully assigned by Ameghino to the rhea Opisthodactylus. Ameghino also believed that the fossils came from the Cretaceous and Eocene "Pyrotherium Beds", when they actually were of Miocene age. By the end of the "Argentine Bone Wars", many Patagornis fossils had been collected and majority reside in the Museo de la Plata or the Natural History Museum, London. Several fragmentary Patagornis specimens were also collected by American crews from Princeton University and the Field Museum of Natural History in Princeton, New Jersey and Chicago, Illinois respectively, although the fossils found by the former now reside at the American Museum of Natural History in New York. The Museo de la Plata also collected a nearly complete Patagornis skeleton, including a skull, though it is poorly preserved. Description and paleobiology Patagornis was very similar to Andalgalornis, another member of the subfamily Patagornithinae, in size and weight, however Andalgalornis was slightly larger. The diameter of the leg bones was about 15% larger than in the living rhea. However, the back height was about the same at 90–100 cm. Estimates of the weight vary: 45 to 50 kg or only 23 kg. The walking speed