... Mammoths of the Pleistocene 274 Box 6.4 Linking Tracks with the Trackmakers 274 The Case of t... more ... Mammoths of the Pleistocene 274 Box 6.4 Linking Tracks with the Trackmakers 274 The Case of the Carson City "Man ... and Clive Pinnock (National Park Service, Glen Canyon National Recreation Area); Ben Wheeler (Union County, New Mexico); Gene Foushee (Bluff, Utah ...
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
Rioarribasuchus is a new generic name for the aetosaur previously named Desmatosuchus chamaensis.... more Rioarribasuchus is a new generic name for the aetosaur previously named Desmatosuchus chamaensis. Rioarribasuchus is most similar to Desmatosuchus and Paratypothorax but is distinguished from these two genera and other aetosaur genera by the long curved spikes on its paramedian scutes as well as by features of scute shape and ornamentation.
Eubrontes is a large (length pes impression> 25 cm) grallatorid, bipedal, functionally tridact... more Eubrontes is a large (length pes impression> 25 cm) grallatorid, bipedal, functionally tridactyl track with a relatively short digit III and a broad pes of a theropod dinosaur. Since the 1970s, many workers have considered the lowest occurrence (LO) of Eubrontes to mark the base of the Jurassic, largely based on its stratigraphic distribution in the Newark Supergroup of eastern North America. However, theropods large enough (> 5 m body length) to make Eubrontes tracks (eg, Liliensternus, Gojirasaurus) are known from Upper ...
Association Round Table most Fruitland strata are exposed. These contain at least two, and possib... more Association Round Table most Fruitland strata are exposed. These contain at least two, and possibly three, levels of in-situ tree stumps, fallen logs up to 20 m long, and several leaf localities. Preliminary analysis indicates the presence of Taxodium, Sequoia, and palm. Pollen analysis will be conducted. Fossil mammals, including multituberculates, marsupials, and insectivores, have been found at two sites in clay-pebble conglomerates, associated with freshwater fish, some sharks, amphibians, turtles, lizards, and dinosaurs. The mammals are represented by isolated teeth, jaw fragments, and the first reported postcranial elements from the San Juan basin. Elsewhere in the area, channel sands and mudstones have produced a large assemblage of turtles, lizards, crocodiles, and dinosaurs. We have identified ankylosaurs, hadrosaurs, ceratopsians, and carnosaurs. There are at least three stratigraphic levels of moUusk-rich beds containing bivalves, gastropods, and numerous gastropod opercula.
Page 1. Pal&ontologische Zeitschrift 2005, Vol. 7914, p. 471-478, 31-12-2005 A giant crocodyl... more Page 1. Pal&ontologische Zeitschrift 2005, Vol. 7914, p. 471-478, 31-12-2005 A giant crocodylomorph from the Upper Triassic of New Mexico STERLING d. NESBITT, Berkeley; RANDALL B. [RMIS, Flagstaff; SPENCER G. LUCAS ...
Packrat middens are important tools for reconstructing the paleoecology and climate of the late P... more Packrat middens are important tools for reconstructing the paleoecology and climate of the late Pleistocene and Holocene of western North America. These collections of plant material, food waste, coprolites, bones, and other biological materials can be well-preserved in arid, protected settings such as caves and rock shelters, and document the environment within the builder’s foraging range. Middens have been most widely utilized to illustrate climate through the environmental requirements of the plants preserved as inclusions, but have been used for a variety of other studies as well. These include the use of included pollen, arthropods, and vertebrate remains as climate proxies, the evolution and distribution of plant taxa, erosion rates, responses to grazing, megafaunal extinction and archaeology. Middens from many National Park System units have been important components of numerous midden studies. Thirty-three National Park System parks, monuments, and other areas in 11 states ...
Rhynchosaurs are abundant in tetrapod faunas of the Middle and early Late Triassic (Carnian) of G... more Rhynchosaurs are abundant in tetrapod faunas of the Middle and early Late Triassic (Carnian) of Gondwana and north-central Laurussia (the United Kingdom), but have long been unknown in Norian faunas. We describe and illustrate the first Norian record of rhynchosaurs, from the Bull Canyon Formation, east-central New Mexico. This record is based on three distal humeri that all can be assigned to the rhynchosaur Otischalkia elderae based on the following shared characteristics: humerus with confluent capitellum and trochlea; humeral shaft asymmetric, with the shaft offset anteriorly with respect to distal humerus; a distinct trochlear fossa on the distal humerus; presence of a hook-like process on the supinator crest of the humerus; and capitellum larger than trochlea on the distal humerus. These additional specimens allow us to revise Otischalkia elderae and extend the temporal range of rhynchosaurs beyond the Carnian-Norian boundary and into the early-mid Norian.
The Bear Gulch Lagerstätte (Mississippian: Chesterian) of central Montana is characterized by its... more The Bear Gulch Lagerstätte (Mississippian: Chesterian) of central Montana is characterized by its extensive ichthyofauna. The vertebrate ichnofauna includes six morphotypes/ichnotaxa of bromalites: (1) morphotype A coprolites are large and ovoid to pear shaped; (2) morphotype B coprolites are elongate and triangular in shape; (3) morphotype C coprolites are elongate and rounded; (4) morphotype D coprolites are small, ovoid and composed of dense groundmass; (5) spiral coprolites; and (6) Ostracobromus snowyensis ichnogen. et ichnosp. nov, is ovoid and characterized by inclusions of multiple valves of ostracods set in a groundmass and is possibly a regurgitalite. The Bear Gulch assemblage provides a baseline for further work on Mississippian vertebrate bromalites.
We document a giant terrestrial arthropod trackway assigned to Diplichnites cuithensis Briggs, Ro... more We document a giant terrestrial arthropod trackway assigned to Diplichnites cuithensis Briggs, Rolfe and Brannan, 1979 from the nonmarine redbeds of the Cutler Group (Late Pennsylvanian, Missourian?) in El Cobre Canyon, New Mexico, a classic Pennsylvanian-Permian vertebrate fossil locality. The El Cobre trackway is the first occurrence of D. cuithensis in the American Southwest, and, with a width of 38 cm, the largest known trackway of D. cuithensis. The tracks are attributable to Arthropleura, a gigantic terrestrial myriapod-like arthropod. The Late Pennsylvanian age and paleoenvironmental setting of the El Cobre trackway is consistent with most other records of D. cuithensis.
Ichnos an International Journal of Plant Animal, Dec 17, 2008
Ichnos, v. 4, pp. 7-20, 1995 An International Journal for Plant and Animal Traces ... The fossil ... more Ichnos, v. 4, pp. 7-20, 1995 An International Journal for Plant and Animal Traces ... The fossil trackway Pteraichnus is pterosaurian, not crocodilian: ... Martin G. Lockley1, Terrence J. Logue2, Joaquin J. Moratalla3, Adrian P. Hunt1, Rebecca J. Schultz1 and John W. ...
Page 1. Paliiont. Z. 66 1/2 147-157 5 Abb. Stuttgart, Juni 1992 The first occurrence of the aetos... more Page 1. Paliiont. Z. 66 1/2 147-157 5 Abb. Stuttgart, Juni 1992 The first occurrence of the aetosaur Paratypothorax andressi (Reptilia, Aetosauria) in the western United States and its biochronological significance ADRIAN P. HUNT and SPENCER G. LUCAS, Albuquerque"" ...
The distinctive, edentulous archosaur Shuvosaurus inexpectatus Chatterjee, 1993, was named based ... more The distinctive, edentulous archosaur Shuvosaurus inexpectatus Chatterjee, 1993, was named based on a skull, whereas the postcrania of the same taxon were named Chatterjeea elegans Long and Murry, 1995. Effigia okeeffeae Nesbitt and Norell, 2006, is the name for the associated skull and postcranium of Shuvosaurus and Chatterjeea. Therefore, only one generic name, Shuvosaurus (= Chatterjeea, = Effigia), is valid, and the supposed diagnostic features of Effigia indicate that, at most, its type material represents a species of Shuvosaurus (S. okeeffeae) distinct from the type species of Shuvosaurus (S. inexpectatus). S. inexpectatus has a well documented, early Revueltian distribution in Texas-New Mexico, whereas S. okeeffeae is well documented from only one Apachean locality in New Mexico.
Relatively large tetrapod footprints from Lower Pennsylvanian strata of the Pottsville Formation ... more Relatively large tetrapod footprints from Lower Pennsylvanian strata of the Pottsville Formation in the Warrior basin coal field of Alabama were previously assigned to the ichnogenusAttenosaurus. However, three morphotypes are present, and we assign these ...
... Mammoths of the Pleistocene 274 Box 6.4 Linking Tracks with the Trackmakers 274 The Case of t... more ... Mammoths of the Pleistocene 274 Box 6.4 Linking Tracks with the Trackmakers 274 The Case of the Carson City "Man ... and Clive Pinnock (National Park Service, Glen Canyon National Recreation Area); Ben Wheeler (Union County, New Mexico); Gene Foushee (Bluff, Utah ...
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
Rioarribasuchus is a new generic name for the aetosaur previously named Desmatosuchus chamaensis.... more Rioarribasuchus is a new generic name for the aetosaur previously named Desmatosuchus chamaensis. Rioarribasuchus is most similar to Desmatosuchus and Paratypothorax but is distinguished from these two genera and other aetosaur genera by the long curved spikes on its paramedian scutes as well as by features of scute shape and ornamentation.
Eubrontes is a large (length pes impression> 25 cm) grallatorid, bipedal, functionally tridact... more Eubrontes is a large (length pes impression> 25 cm) grallatorid, bipedal, functionally tridactyl track with a relatively short digit III and a broad pes of a theropod dinosaur. Since the 1970s, many workers have considered the lowest occurrence (LO) of Eubrontes to mark the base of the Jurassic, largely based on its stratigraphic distribution in the Newark Supergroup of eastern North America. However, theropods large enough (> 5 m body length) to make Eubrontes tracks (eg, Liliensternus, Gojirasaurus) are known from Upper ...
Association Round Table most Fruitland strata are exposed. These contain at least two, and possib... more Association Round Table most Fruitland strata are exposed. These contain at least two, and possibly three, levels of in-situ tree stumps, fallen logs up to 20 m long, and several leaf localities. Preliminary analysis indicates the presence of Taxodium, Sequoia, and palm. Pollen analysis will be conducted. Fossil mammals, including multituberculates, marsupials, and insectivores, have been found at two sites in clay-pebble conglomerates, associated with freshwater fish, some sharks, amphibians, turtles, lizards, and dinosaurs. The mammals are represented by isolated teeth, jaw fragments, and the first reported postcranial elements from the San Juan basin. Elsewhere in the area, channel sands and mudstones have produced a large assemblage of turtles, lizards, crocodiles, and dinosaurs. We have identified ankylosaurs, hadrosaurs, ceratopsians, and carnosaurs. There are at least three stratigraphic levels of moUusk-rich beds containing bivalves, gastropods, and numerous gastropod opercula.
Page 1. Pal&ontologische Zeitschrift 2005, Vol. 7914, p. 471-478, 31-12-2005 A giant crocodyl... more Page 1. Pal&ontologische Zeitschrift 2005, Vol. 7914, p. 471-478, 31-12-2005 A giant crocodylomorph from the Upper Triassic of New Mexico STERLING d. NESBITT, Berkeley; RANDALL B. [RMIS, Flagstaff; SPENCER G. LUCAS ...
Packrat middens are important tools for reconstructing the paleoecology and climate of the late P... more Packrat middens are important tools for reconstructing the paleoecology and climate of the late Pleistocene and Holocene of western North America. These collections of plant material, food waste, coprolites, bones, and other biological materials can be well-preserved in arid, protected settings such as caves and rock shelters, and document the environment within the builder’s foraging range. Middens have been most widely utilized to illustrate climate through the environmental requirements of the plants preserved as inclusions, but have been used for a variety of other studies as well. These include the use of included pollen, arthropods, and vertebrate remains as climate proxies, the evolution and distribution of plant taxa, erosion rates, responses to grazing, megafaunal extinction and archaeology. Middens from many National Park System units have been important components of numerous midden studies. Thirty-three National Park System parks, monuments, and other areas in 11 states ...
Rhynchosaurs are abundant in tetrapod faunas of the Middle and early Late Triassic (Carnian) of G... more Rhynchosaurs are abundant in tetrapod faunas of the Middle and early Late Triassic (Carnian) of Gondwana and north-central Laurussia (the United Kingdom), but have long been unknown in Norian faunas. We describe and illustrate the first Norian record of rhynchosaurs, from the Bull Canyon Formation, east-central New Mexico. This record is based on three distal humeri that all can be assigned to the rhynchosaur Otischalkia elderae based on the following shared characteristics: humerus with confluent capitellum and trochlea; humeral shaft asymmetric, with the shaft offset anteriorly with respect to distal humerus; a distinct trochlear fossa on the distal humerus; presence of a hook-like process on the supinator crest of the humerus; and capitellum larger than trochlea on the distal humerus. These additional specimens allow us to revise Otischalkia elderae and extend the temporal range of rhynchosaurs beyond the Carnian-Norian boundary and into the early-mid Norian.
The Bear Gulch Lagerstätte (Mississippian: Chesterian) of central Montana is characterized by its... more The Bear Gulch Lagerstätte (Mississippian: Chesterian) of central Montana is characterized by its extensive ichthyofauna. The vertebrate ichnofauna includes six morphotypes/ichnotaxa of bromalites: (1) morphotype A coprolites are large and ovoid to pear shaped; (2) morphotype B coprolites are elongate and triangular in shape; (3) morphotype C coprolites are elongate and rounded; (4) morphotype D coprolites are small, ovoid and composed of dense groundmass; (5) spiral coprolites; and (6) Ostracobromus snowyensis ichnogen. et ichnosp. nov, is ovoid and characterized by inclusions of multiple valves of ostracods set in a groundmass and is possibly a regurgitalite. The Bear Gulch assemblage provides a baseline for further work on Mississippian vertebrate bromalites.
We document a giant terrestrial arthropod trackway assigned to Diplichnites cuithensis Briggs, Ro... more We document a giant terrestrial arthropod trackway assigned to Diplichnites cuithensis Briggs, Rolfe and Brannan, 1979 from the nonmarine redbeds of the Cutler Group (Late Pennsylvanian, Missourian?) in El Cobre Canyon, New Mexico, a classic Pennsylvanian-Permian vertebrate fossil locality. The El Cobre trackway is the first occurrence of D. cuithensis in the American Southwest, and, with a width of 38 cm, the largest known trackway of D. cuithensis. The tracks are attributable to Arthropleura, a gigantic terrestrial myriapod-like arthropod. The Late Pennsylvanian age and paleoenvironmental setting of the El Cobre trackway is consistent with most other records of D. cuithensis.
Ichnos an International Journal of Plant Animal, Dec 17, 2008
Ichnos, v. 4, pp. 7-20, 1995 An International Journal for Plant and Animal Traces ... The fossil ... more Ichnos, v. 4, pp. 7-20, 1995 An International Journal for Plant and Animal Traces ... The fossil trackway Pteraichnus is pterosaurian, not crocodilian: ... Martin G. Lockley1, Terrence J. Logue2, Joaquin J. Moratalla3, Adrian P. Hunt1, Rebecca J. Schultz1 and John W. ...
Page 1. Paliiont. Z. 66 1/2 147-157 5 Abb. Stuttgart, Juni 1992 The first occurrence of the aetos... more Page 1. Paliiont. Z. 66 1/2 147-157 5 Abb. Stuttgart, Juni 1992 The first occurrence of the aetosaur Paratypothorax andressi (Reptilia, Aetosauria) in the western United States and its biochronological significance ADRIAN P. HUNT and SPENCER G. LUCAS, Albuquerque"" ...
The distinctive, edentulous archosaur Shuvosaurus inexpectatus Chatterjee, 1993, was named based ... more The distinctive, edentulous archosaur Shuvosaurus inexpectatus Chatterjee, 1993, was named based on a skull, whereas the postcrania of the same taxon were named Chatterjeea elegans Long and Murry, 1995. Effigia okeeffeae Nesbitt and Norell, 2006, is the name for the associated skull and postcranium of Shuvosaurus and Chatterjeea. Therefore, only one generic name, Shuvosaurus (= Chatterjeea, = Effigia), is valid, and the supposed diagnostic features of Effigia indicate that, at most, its type material represents a species of Shuvosaurus (S. okeeffeae) distinct from the type species of Shuvosaurus (S. inexpectatus). S. inexpectatus has a well documented, early Revueltian distribution in Texas-New Mexico, whereas S. okeeffeae is well documented from only one Apachean locality in New Mexico.
Relatively large tetrapod footprints from Lower Pennsylvanian strata of the Pottsville Formation ... more Relatively large tetrapod footprints from Lower Pennsylvanian strata of the Pottsville Formation in the Warrior basin coal field of Alabama were previously assigned to the ichnogenusAttenosaurus. However, three morphotypes are present, and we assign these ...
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