Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Matthew J. Vavrek"'
Autor:
Samantha M. Hamilton, Ilaria Paparella, Phil R. Bell, Nicolás E. Campione, Federico Fanti, Derek W. Larson, Robin L. Sissons, Matthew J. Vavrek, Michael J. Balsai, Corwin Sullivan
Publikováno v:
Geosciences, Vol 13, Iss 11, p 337 (2023)
Reported lizard material from the Wapiti Formation (central-western Alberta, Canada) is limited to fragmentary remains of Kleskunsaurus grandeprairiensis and Socognathus unicuspis, a partial dentary attributed to Chamops cf. C. segnis, and a vertebra
Externí odkaz:
https://doaj.org/article/1e7a12526fe7450896b49786050f5ca2
Autor:
Brayden Holland, Phil R. Bell, Federico Fanti, Samantha M. Hamilton, Derek W. Larson, Robin Sissons, Corwin Sullivan, Matthew J. Vavrek, Yanyin Wang, Nicolás E. Campione
Publikováno v:
PeerJ, Vol 9, p e11290 (2021)
Hadrosaurid (duck-billed) dinosaur bonebeds are exceedingly prevalent in upper Cretaceous (Campanian–Maastrichtian) strata from the Midwest of North America (especially Alberta, Canada, and Montana, U.S.A) but are less frequently documented from mo
Externí odkaz:
https://doaj.org/article/bbe6da3a6c08444aa391cf4699685566
Autor:
Matthew J. Vavrek, Donald B. Brinkman
Publikováno v:
Vertebrate Anatomy, Morphology, Palaeontology, Vol 5 (2018)
Trionychid turtles were widespread throughout much of the Western Interior Basin of North America during the Cretaceous, represented by a wide variety of taxa. Despite their widespread abundance east of the Rocky Mountains, they have not previously b
Externí odkaz:
https://doaj.org/article/ebef750ddaa043dda3d2ffceba046692
Publikováno v:
Vertebrate Anatomy, Morphology, Palaeontology, Vol 1 (2016)
Xiphactinus is one of the largest teleost fish known from the Late Cretaceous of North America, and has been found across much of the Western Interior Basin. Despite extensive Late Cretaceous marine deposits occurring in Alberta, there has previously
Externí odkaz:
https://doaj.org/article/0be792a442df4df7813c5d6cc0ddf0d2
Autor:
Matthew J. Vavrek
Publikováno v:
PeerJ, Vol 4, p e1720 (2016)
Cluster analysis is one of the most commonly used methods in palaeoecological studies, particularly in studies investigating biogeographic patterns. Although a number of different clustering methods are widely used, the approach and underlying assump
Externí odkaz:
https://doaj.org/article/463a146385be478f93d8c529c7c6eb14
Publikováno v:
PeerJ, Vol 3, p e818 (2015)
Quantitative morphometric analyses, particularly ontogenetic allometry, are common methods used in quantifying shape, and changes therein, in both extinct and extant organisms. Due to incompleteness and the potential for restricted sample sizes in th
Externí odkaz:
https://doaj.org/article/db4d02d12b044f6083043032cfac1d99
Autor:
Robin L. Sissons, Phil R. Bell, Matthew J. Vavrek, Nicolás E. Campione, Corwin Sullivan, Matt A. White, Nathan J. Enriquez
Publikováno v:
Geological Magazine. 158:1115-1128
Late Cretaceous tracks attributable to deinonychosaurs in North America are rare, with only one occurrence of Menglongipus from Alaska and two possible, but indeterminate, occurrences reported from Mexico. Here we describe the first probable deinonyc
Publikováno v:
Fossil Record, Vol 23, Pp 179-189 (2020)
Fossil Record 23(2): 179-189
Fossil Record 23(2): 179-189
Fragmentary but associated dinosaur bones collected in 1930 from the Pine River of northeastern British Columbia are identified here as originating from an ankylosaur. The specimen represents only the second occurrence of dinosaur skeletal material f
Autor:
Kendra Ilana Lennie, Matthew J. Vavrek, James A. Campbell, Ramon S. Nagesan, Jason S. Anderson, Jason D. Pardo
Publikováno v:
Canadian Journal of Earth Sciences. 57:542-552
Western North America preserves iconic dinosaur faunas from the Upper Jurassic and Upper Cretaceous, but this record is interrupted by an approximately 20 Myr gap with essentially no terrestrial vertebrate fossil localities. This poorly sampled inter
Autor:
Matthew J. Vavrek, Phil R. Bell, Robin L. Sissons, Nicolás E. Campione, Corwin Sullivan, Brayden Holland, Yanyin Wang, Samantha M. Hamilton, Federico Fanti, Derek W. Larson
Publikováno v:
PeerJ
PeerJ, Vol 9, p e11290 (2021)
PeerJ, Vol 9, p e11290 (2021)
Hadrosaurid (duck-billed) dinosaur bonebeds are exceedingly prevalent in upper Cretaceous (Campanian–Maastrichtian) strata from the Midwest of North America (especially Alberta, Canada, and Montana, U.S.A) but are less frequently documented from mo