Ungulates

@misc{gregory1912notes1,
    author = "Gregory, W. K",
    title = "Notes on the principles of quadrupedal locomotion and the mechanisms of the limbs in hoofed animals",
    year = "1912",
    howpublished = "Annals of the New York Academy of Sciences, v. 22, p. 267-292",
    note = "talkorigins\_source = {true}; raw\_reference = {Gregory, W. K., 1912, Notes on the principles of quadrupedal locomotion and the mechanisms of the limbs in hoofed animals: Annals of the New York Academy of Sciences, v. 22, p. 267-292.}"
}

@article{wieland1925dinosaur,
    author = "Wieland, G. R.",
    title = "Dinosaur Extinction",
    year = "1925",
    journal = "The American Naturalist",
    url = "https://doi.org/10.1086/280066",
    doi = "10.1086/280066",
    number = "665",
    pages = "557-565",
    volume = "59"
}

@article{axelrod1968cretaceous,
    author = "Axelrod, Daniel I. and Bailey, Harry P.",
    title = "Cretaceous Dinosaur Extinction",
    year = "1968",
    journal = "Evolution",
    url = "https://doi.org/10.2307/2406883",
    doi = "10.2307/2406883",
    number = "3",
    pages = "595",
    volume = "22"
}

@article{retallack1986cretaceoustertiary,
    author = "Retallack, Greg and Leahy, Guy D.",
    title = "Cretaceous-Tertiary Dinosaur Extinction",
    year = "1986",
    journal = "Science",
    url = "https://doi.org/10.1126/science.234.4781.1170",
    doi = "10.1126/science.234.4781.1170",
    number = "4781",
    pages = "1170-1171",
    volume = "234"
}

Dinosaur extinction in Montana, Alberta, and Wyoming was a gradual process that began 7 million years before the end of the Cretaceous and accelerated rapidly in the final 0.3 million years of the Cretaceous, during the interval of apparent competition from rapidly evolving immigrating ungulates. This interval involves rapid reduction in both diversity and population density of dinosaurs. The last dinosaurs known are from a channel that contains teeth of Mantuan mammals, seven species of dinosaurs, and Paleocene pollen. The top of this channel is 1.3 meters above the likely position of the iridium anomaly, the Cretaceous/Tertiary boundary.

@article{sloan1986gradual,
    author = "Sloan, Robert E. and Rigby, J. Keith and Van Valen, Leigh M. and Gabriel, Diane",
    title = "Gradual Dinosaur Extinction and Simultaneous Ungulate Radiation in the Hell Creek Formation",
    year = "1986",
    journal = "Science",
    abstract = "Dinosaur extinction in Montana, Alberta, and Wyoming was a gradual process that began 7 million years before the end of the Cretaceous and accelerated rapidly in the final 0.3 million years of the Cretaceous, during the interval of apparent competition from rapidly evolving immigrating ungulates. This interval involves rapid reduction in both diversity and population density of dinosaurs. The last dinosaurs known are from a channel that contains teeth of Mantuan mammals, seven species of dinosaurs, and Paleocene pollen. The top of this channel is 1.3 meters above the likely position of the iridium anomaly, the Cretaceous/Tertiary boundary.",
    url = "https://doi.org/10.1126/science.232.4750.629",
    doi = "10.1126/science.232.4750.629",
    number = "4750",
    pages = "629-633",
    volume = "232"
}

@misc{sloan1986gradual2,
    author = "Sloan, R. E. et al",
    title = "Gradual dinosaur extinction and simultaneous ungulate radiation in the Hell Creek Formation",
    year = "1986",
    howpublished = "Science, v. 232, p. 629-633",
    note = "talkorigins\_source = {true}; raw\_reference = {Sloan, R. E. et al., 1986, Gradual dinosaur extinction and simultaneous ungulate radiation in the Hell Creek Formation: Science, v. 232, p. 629-633.}"
}

@article{archibald1992dinosaur,
    author = "Archibald, J. David",
    title = "Dinosaur Diversity and Extinction",
    year = "1992",
    journal = "Science",
    url = "https://doi.org/10.1126/science.256.5054.160.a",
    doi = "10.1126/science.256.5054.160.a",
    number = "5054",
    pages = "160-160",
    volume = "256"
}

@article{clemens1992dinosaur,
    author = "Clemens, William A.",
    title = "Dinosaur Diversity and Extinction",
    year = "1992",
    journal = "Science",
    url = "https://doi.org/10.1126/science.256.5054.159-b",
    doi = "10.1126/science.256.5054.159-b",
    number = "5054",
    pages = "159-160",
    volume = "256"
}

@article{stevenson1993gradual,
    author = "Stevenson, Chris",
    title = "Gradual Extinction",
    year = "1993",
    journal = "Probation Journal",
    url = "https://doi.org/10.1177/026455059304000224",
    doi = "10.1177/026455059304000224",
    number = "2",
    pages = "116-117",
    volume = "40"
}

@incollection{archibald2004dinosaur,
    author = "Archibald, J. David and Fastovsky, David E.",
    title = "Dinosaur Extinction",
    year = "2004",
    booktitle = "The Dinosauria",
    url = "https://doi.org/10.1525/california/9780520242098.003.0033",
    doi = "10.1525/california/9780520242098.003.0033",
    pages = "672-684"
}

@incollection{archibald201930,
    author = "Archibald, David and Fastovsky, David E.",
    title = "30. Dinosaur Extinction",
    year = "2019",
    booktitle = "The Dinosauria, Second Edition",
    url = "https://doi.org/10.1525/9780520941434-036",
    doi = "10.1525/9780520941434-036",
    pages = "672-684"
}