Bruce J Macfadden
Biographic Data
| ID | 3529105 |
|---|---|
| NAME | Bruce J Macfadden |
| GIVEN NAMES | Bruce J |
| FAMILY NAME | Macfadden |
| SIGNATURE | MACFADDEN B J |
| AFFILIATIONS | Florida Museum of Natural History |
| ORCID | 0000-0002-4998-7083 |
| VERIFIED | Yes |
| TOTAL WORKS | 16 |
| TOTAL CITATIONS | 40 |
| AUTHOR COUNT | 16 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1983 |
| LATEST PUBLICATION YEAR | 2021 |
| H-INDEX | 2 |
Exploring the role of 3D printing and STEM integration levels in students' STEM career interest
The use of 3D printing in science, technology, engineering and mathematics (STEM) learning is a promising way for integrated STEM education. This study examined the influence of 3D printing infused STEM integration on students' interest in STEM careers, which is essential for students to participate in STEM disciplines and future STEM careers. The participants included 26 teachers across six states in the United States and their 1455 students in …
Exploring the influence of teachers' beliefs and 3D printing integrated STEM instruction on students’ STEM motivation
Quaternary gomphotheres (Mammalia
Devil's Den, Florida
In the early 1960s, human skeletal remains of several individuals were found in apparent association with late Pleistocene mammals during an excavation at Devil's Den sinkhole in Levy County, Florida. The rarity of these associations in Florida and across the Americas is well-known. Most sites suggesting this antiquity contain diagnostic lithic and bone artifacts, but no human remains. Very little has been published about the Devil's Den site, an…
Middle Pleistocene age of the fossiliferous sedimentary sequence from Tarija, Bolivia
The highly fossiliferous sediments of the Tolomosa Formation from Tarija, southern Bolivia, represent one of the most important localities in South America that documents the Great American Biotic Interchange. Over the past several decades, chronostratigraphic studies have indicated a middle Pleistocene age for the Tolomosa Formation from ~ 1.1 to 0.7 Ma. This interval correlates to the Ensenadan South American Land Mammal Age as it is characteri…
Earliest art in the Americas
Calibration of mammoth ( Mammuthus ) dispersal into North America using rare earth elements of Plio-Pleistocene mammals from Florida
The first appearance of mammoth ( Mammuthus ) is currently used to define the beginning of the Irvingtonian North American Land Mammal Age at about 1.4 Ma. Thereafter, mammoth fossils are common and widespread in North America until the end of the Pleistocene. In contrast to this generally accepted biochronology, recent reports have asserted that mammoth occurs in late Pliocene (ca. 2.5 Ma) alluvium from the Santa Fe River of northern Florida. Th…
Diet and habitat of toxodont megaherbivores (Mammalia, Notoungulata) from the late Quaternary of South and Central America
The toxodont megaherbivores Toxodon and Mixotoxodon were endemic to South and Central America during the late Quaternary. Isotopic signatures of 47 toxodont teeth were analyzed to reconstruct diet and ancient habitat. Tooth enamel carbon isotope data from six regions of South and Central America indicate significant differences in toxodont diet and local vegetation during the late Quaternary. Toxodonts ranged ecologically from C3 forest browsers …
Chapter 17
Chapter 15
Middle Pleistocene Climate Change Recorded in Fossil Mammal Teeth from Tarija, Bolivia, and Upper Limit of the Ensenadan Land-Mammal Age
Fossiliferous middle Pleistocene sediments of the Tarija basin of southern Bolivia contain a classic Ensenadan land-mammal fauna. New carbon isotopic data reported here for 50 specimens of the grazing mammals Equus (horse) and Cuvieronius (mastodon), documented from eight stratigraphic levels at Tarija, vary significantly in the δ 13 C values of their teeth. The pattern of variation appears to reflect the proportion of C 3 and C 4 grasses eaten d…
Global vegetation change through the Miocene/Pliocene boundary
Chronology of Cenozoic primate localities in South America
Geochronology of a Rich Early Pleistocene Vertebrate Fauna, Leisey Shell Pit, Tampa Bay, Florida
Leisey Shell Pit, on the southeastern edge of Tampa Bay, has produced the largest early Pleistocene vertebrate fauna in North America, consisting of about 30,000 cataloged specimens. The predominantly terrestrial and freshwater vertebrate fauna was transported into an estuarine environment during a regressive phase in an otherwise marine, bay-bottom sequence of sandy shell beds. The biochronological age of the Leisey Shell Pit local fauna is late…
Magnetic Polarity Stratigraphy of the Pleistocene Section at Portland (Victoria), Australia
Three to seven oriented paleomagnetic samples were collected from 16 sites in the Nelson Bay and Bridgewater formations at Portland, Victoria, which contains the recently discovered Nelson Bay local fauna (L.F.). The entire section has reversed polarity. These results, along with Globorotalia truncatulinoides within the section, and the presence of underlying middle Pliocene-dated basalts, indicate that the Portland section, and the included Nels…
Magnetic Polarity Stratigraphy of the Middle Pleistocene (Ensenadan) Tarija Formation of Southern Bolivia
The Tarija Formation of southern Bolivia, which is well known for its classic vertebrate faunas, is of prime importance in understanding of the chronology of the Ensenadan Land Mammal Age. This formation consists of well-exposed and relatively fossiliferous sections of clays, clayey silts, sands, gravels, and tuffs which were deposited in a predominately fluviatile regime in a Pleistocene structural basin. Four stratigraphic sections, each measur…
Earliest art in the Americas
Chronology of Cenozoic primate localities in South America
Devil's Den, Florida
In the early 1960s, human skeletal remains of several individuals were found in apparent association with late Pleistocene mammals during an excavation at Devil's Den sinkhole in Levy County, Florida. The rarity of these associations in Florida and across the Americas is well-known. Most sites suggesting this antiquity contain diagnostic lithic and bone artifacts, but no human remains. Very little has been published about the Devil's Den site, an…
Magnetic Polarity Stratigraphy of the Middle Pleistocene (Ensenadan) Tarija Formation of Southern Bolivia
The Tarija Formation of southern Bolivia, which is well known for its classic vertebrate faunas, is of prime importance in understanding of the chronology of the Ensenadan Land Mammal Age. This formation consists of well-exposed and relatively fossiliferous sections of clays, clayey silts, sands, gravels, and tuffs which were deposited in a predominately fluviatile regime in a Pleistocene structural basin. Four stratigraphic sections, each measur…
Magnetic Polarity Stratigraphy of the Pleistocene Section at Portland (Victoria), Australia
Three to seven oriented paleomagnetic samples were collected from 16 sites in the Nelson Bay and Bridgewater formations at Portland, Victoria, which contains the recently discovered Nelson Bay local fauna (L.F.). The entire section has reversed polarity. These results, along with Globorotalia truncatulinoides within the section, and the presence of underlying middle Pliocene-dated basalts, indicate that the Portland section, and the included Nels…
Geochronology of a Rich Early Pleistocene Vertebrate Fauna, Leisey Shell Pit, Tampa Bay, Florida
Leisey Shell Pit, on the southeastern edge of Tampa Bay, has produced the largest early Pleistocene vertebrate fauna in North America, consisting of about 30,000 cataloged specimens. The predominantly terrestrial and freshwater vertebrate fauna was transported into an estuarine environment during a regressive phase in an otherwise marine, bay-bottom sequence of sandy shell beds. The biochronological age of the Leisey Shell Pit local fauna is late…
Chronology of Cenozoic primate localities in South America
Global vegetation change through the Miocene/Pliocene boundary
Middle Pleistocene Climate Change Recorded in Fossil Mammal Teeth from Tarija, Bolivia, and Upper Limit of the Ensenadan Land-Mammal Age
Fossiliferous middle Pleistocene sediments of the Tarija basin of southern Bolivia contain a classic Ensenadan land-mammal fauna. New carbon isotopic data reported here for 50 specimens of the grazing mammals Equus (horse) and Cuvieronius (mastodon), documented from eight stratigraphic levels at Tarija, vary significantly in the δ 13 C values of their teeth. The pattern of variation appears to reflect the proportion of C 3 and C 4 grasses eaten d…
Chapter 15
Chapter 17
Diet and habitat of toxodont megaherbivores (Mammalia, Notoungulata) from the late Quaternary of South and Central America
The toxodont megaherbivores Toxodon and Mixotoxodon were endemic to South and Central America during the late Quaternary. Isotopic signatures of 47 toxodont teeth were analyzed to reconstruct diet and ancient habitat. Tooth enamel carbon isotope data from six regions of South and Central America indicate significant differences in toxodont diet and local vegetation during the late Quaternary. Toxodonts ranged ecologically from C3 forest browsers …
Calibration of mammoth ( Mammuthus ) dispersal into North America using rare earth elements of Plio-Pleistocene mammals from Florida
The first appearance of mammoth ( Mammuthus ) is currently used to define the beginning of the Irvingtonian North American Land Mammal Age at about 1.4 Ma. Thereafter, mammoth fossils are common and widespread in North America until the end of the Pleistocene. In contrast to this generally accepted biochronology, recent reports have asserted that mammoth occurs in late Pliocene (ca. 2.5 Ma) alluvium from the Santa Fe River of northern Florida. Th…
Earliest art in the Americas
Middle Pleistocene age of the fossiliferous sedimentary sequence from Tarija, Bolivia
The highly fossiliferous sediments of the Tolomosa Formation from Tarija, southern Bolivia, represent one of the most important localities in South America that documents the Great American Biotic Interchange. Over the past several decades, chronostratigraphic studies have indicated a middle Pleistocene age for the Tolomosa Formation from ~ 1.1 to 0.7 Ma. This interval correlates to the Ensenadan South American Land Mammal Age as it is characteri…
Devil's Den, Florida
In the early 1960s, human skeletal remains of several individuals were found in apparent association with late Pleistocene mammals during an excavation at Devil's Den sinkhole in Levy County, Florida. The rarity of these associations in Florida and across the Americas is well-known. Most sites suggesting this antiquity contain diagnostic lithic and bone artifacts, but no human remains. Very little has been published about the Devil's Den site, an…
Quaternary gomphotheres (Mammalia
Exploring the influence of teachers' beliefs and 3D printing integrated STEM instruction on students’ STEM motivation
Exploring the role of 3D printing and STEM integration levels in students' STEM career interest
The use of 3D printing in science, technology, engineering and mathematics (STEM) learning is a promising way for integrated STEM education. This study examined the influence of 3D printing infused STEM integration on students' interest in STEM careers, which is essential for students to participate in STEM disciplines and future STEM careers. The participants included 26 teachers across six states in the United States and their 1455 students in …
Evolution and Paleontology Studies (10 works) · Pleistocene (10 works) · Fauna (9 works) · Geology (9 works) · Paleontology (9 works) · Biology (8 works) · Geography (7 works) · Early Pleistocene (6 works) · Ecology (6 works) · Geology and Paleoclimatology Research (6 works)