[dinosaur] Late Cretaceous megaherbivorous dinosaur community competition (free pdf)

Ben Creisler
[email protected]


Jordan C. Mallon (2019)
Competition structured a Late Cretaceous megaherbivorous dinosaur
assemblage.
Scientific Reports 9, Article number: 15447
DOI: https://urldefense.proofpoint.com/v2/url?u=https-3A__doi.org_10.1038_s41598-2D019-2D51709-2D5&d=DwIBaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=KTVDSbtE6SnRDk2NrQVJ80P6ecuwEuRXhWu6GL3uXzs&s=-6tuIRJhLVhizlV5gSGJ5Oq4dFf4W6eqEbI74eGsp5Q&e= 
https://urldefense.proofpoint.com/v2/url?u=https-3A__www.nature.com_articles_s41598-2D019-2D51709-2D5&d=DwIBaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=KTVDSbtE6SnRDk2NrQVJ80P6ecuwEuRXhWu6GL3uXzs&s=epLM65uoCI5Lwz7F-75PMmGUgtHoVHmXDkGaCjBe39w&e= 
Free pdf:
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Modern megaherbivore community richness is limited by bottom-up controls,
such as resource limitation and resultant dietary competition. However, the
extent to which these same controls impacted the richness of fossil
megaherbivore communities is poorly understood. The present study
investigates the matter with reference to the megaherbivorous dinosaur
assemblage from the middle to upper Campanian Dinosaur Park Formation of
Alberta, Canada. Using a meta-analysis of 21 ecomorphological variables
measured across 14 genera, contemporaneous taxa are demonstrably
well-separated in ecomorphospace at the family/subfamily level. Moreover,
this pattern is persistent through the approximately 1.5 Myr timespan of
the formation, despite continual species turnover, indicative of underlying
structural principles imposed by long-term ecological competition. After
considering the implications of ecomorphology for megaherbivorous dinosaur
diet, it is concluded that competition structured comparable
megaherbivorous dinosaur communities throughout the Late Cretaceous of
western North America.


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