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9 results for “Paromomyidae”
FIGURE 6 in New omomyoids (Euprimates, Mammalia) from the late Uintan of southern California, USA, and the question of the extinction of the Paromomyidae (Plesiadapiformes, Primates)
FIGURE 6. Micro-CT scan reconstructions of specimens of Walshina esmaraldensis gen. et sp. nov. generated using Avizo 7: 1: left M1, LACM 40198 (holotype), in occlusal view; 2: left M2, SDSNH 87336, in occlusal view; 3: lingual fragment of a left M2, SDSNH 87337, in occlusal view; 4: lingual fragment of a right M2, SDSNH 42268, in occlusal view; 5, 6, 9, 10: left M2, SDSNH 87332, in occlusal (5), buccal (6), mesial (9) and lingual (10) views; 7, 8, 11, 12: mesial fragment of a left M1, SDSNH 87331, in occlusal (7), buccal (8), mesial (11) and lingual (12) views; 13, 14, 17, 18: left M3, SDSNH 87334, in buccal (13), occlusal (14), lingual (17) and mesial (18) views; 15, 16, 19: distal fragment of a right M3, SDSNH 87335, in buccal (15), occlusal (16) and lingual (19) views.
FIGURE 5 in New omomyoids (Euprimates, Mammalia) from the late Uintan of southern California, USA, and the question of the extinction of the Paromomyidae (Plesiadapiformes, Primates)
FIGURE 5. Photographs taken with digital camera (1, 4-11) and Micro-CT scan reconstructions generated using Avizo 7 (2, 3). Walshina shifrae comb. nov. (1, 4, 7, 10) – 1: right M1, CM 15797 (holotype; mirrored), in occlusal view; 4: left M2, CM 15103, in occlusal view; 7: left M, CM 21637, in occlusal view; 10: left M; CM 15726, in occlusal view. 2 3 Walshina esmaraldensis gen. et sp. nov. (2, 5) – 2: left M1, LACM 40198 (holotype), in occlusal view; 5: left M2, SDSNH 62850, in occlusal view. Walshina mcgrewi comb. nov. (3, 6, 8, 9, 11) – 3: left M1, CM 15635 (holotype), in occlusal view; 6: left M2, CM15794, in occlusal view; 8, 9, 11: left mandibular fragment with M, CM 29005, in occlusal 2 (8), buccal (9), and lingual (11) views.
FIGURE 3 in New omomyoids (Euprimates, Mammalia) from the late Uintan of southern California, USA, and the question of the extinction of the Paromomyidae (Plesiadapiformes, Primates)
FIGURE 3. Reconstruction of western North America from 40 million years ago. Orange dot indicates the paleoposition of the sites discussed in this paper, whereas the red dot indicates the current relative position of the sites. The map is reproduced with R. Blakey's permission (Colorado Plateau Geosystems, Inc.).
FIGURE 2 in New omomyoids (Euprimates, Mammalia) from the late Uintan of southern California, USA, and the question of the extinction of the Paromomyidae (Plesiadapiformes, Primates)
FIGURE 2. Holotype of Trogolemur myodes, AMNH 12599 (Matthew, 1909: plate LII, figure 5). Right dentary with P2-M3. 1: occlusal view; 2: buccal view; 3: lingual view.
FIGURE 4 in New omomyoids (Euprimates, Mammalia) from the late Uintan of southern California, USA, and the question of the extinction of the Paromomyidae (Plesiadapiformes, Primates)
FIGURE 4. Environmental SEM images of four teeth of Walshina esmaraldensis gen. et sp. nov. 1: left M3, SDSNH 76276; 2: right M1, SDSNH 76337; 3: right M2, SDSNH 76338; 4: right M3, SDSNH 72583. All teeth are in occlusal view. Arrow indicates the location of the fovea.
FIGURE 1. The late Wasatchian paromomyid Phenacolemur citatus. 1 in New omomyoids (Euprimates, Mammalia) from the late Uintan of southern California, USA, and the question of the extinction of the Paromomyidae (Plesiadapiformes, Primates)
FIGURE 1. The late Wasatchian paromomyid Phenacolemur citatus. 1: USGS 6573 (original fossil), right maxilla with P3-M2. 2-4: USGS 21712 (cast), left dentary with P4-M3 in occlusal (2), buccal (3), and lingual (4) views.
FIGURE 7 in New omomyoids (Euprimates, Mammalia) from the late Uintan of southern California, USA, and the question of the extinction of the Paromomyidae (Plesiadapiformes, Primates)
FIGURE 7. Hypothesis of relationships of Walshina gen. nov. in the context of the Order Primates. Strict consensus cladogram based on data modified from Holroyd and Strait (2008), including the addition of seven newly-coded trogolemurins (Trogolemur amplior, Tr. fragilis, Tr. leonardi, Sphacorhysis burntforkensis, Walshina esmaraldensis gen. et sp. nov., W. mcgrewi comb. nov., and W. shifrae comb. nov.), a microchoerine (Melaneremia bryanti), and three anaptomorphins (Anemorhysis sublettensis, An. wortmani, and An. natronensis). Trogolemurins are marked in blue.
Data from: The European Paromomyidae (Primates, Mammalia): taxonomy, phylogeny, and biogeographic implications
Plesiadapiforms represent the first radiation of Primates, appearing near the Cretaceous-Paleogene boundary. Eleven families of plesiadapiforms are recognized, including the Paromomyidae. Four species of paromomyids from the early Eocene have been reported from Europe: Arcius fuscus, Arcius lapparenti, and Arcius rougieri from France, and Arcius zbyszewskii from Portugal. Other Arcius specimens from the early Eocene are known from Masia de l'Hereuet (Spain), Abbey Wood (England), and Sotteville-sur-Mer (Normandy, France). A cladistic analysis of the European paromomyids has never previously been published. A total of 53 dental characters were analyzed for the four Arcius species and the specimens from Spain, England, and Normandy. The results of a parsimony analysis using TNT agree with previous conceptions of A. zbyszewskii as the most primitive member of the genus. Also consistent with existing hypotheses, Arcius rougieri is positioned as the sister taxon of A. fuscus and A. lapparenti, and the results suggest that the fossil from Normandy is A. zbyszewskii. However, the English fossil pertains to a primitive lineage, rather than grouping with A. lapparenti as had been suggested; as such it is recognized here as a distinct species (Arcius hookeri). The Spanish fossils cluster together with the French species, but do not show the previously proposed special relationship with A. lapparenti, and are sufficiently distinct to be placed in a new species (Arcius ilerdensis). Arcius is recovered as monophyletic, which is consistent with a single migration event from North America to Europe around the earliest Eocene though the Greenland land bridge.
Data from: The European Paromomyidae (Primates, Mammalia): taxonomy, phylogeny, and biogeographic implications
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