Vahe D. Demirjian

Osborn and Mook (1921) actually synonymize Amphicoelias latus with Camarasaurus supremus, but Carpenter (1998) considers it a synonym of Camarasaurus grandis because it was found l...

Pitekunsaurus and Muyelensaurus are recovered as members of Aeolosaurini in the original description of Overosaurus by Coria et al. (2013), yet your paper recovers the two genera a...

Hi Chase, The specimen AMNH 2550-2553 you mention was originally assigned to the ornithomimosaur Coelosaurus antiquus by Leidy (1865), only to be later made the holotype of the...

Hi, With respect to the cladogram, the allodaposuchid Allodaposuchus subjuniperus has been re-assigned to the new genus Agaresuchus by Narváez et al. (2016), while Theriosuchus...

Hi Yun, Bell et al. (2016) report a new megaraptoran specimen from Australia, and their cladistic analyses test the carcharodontosaurian and tyrannosauroid placements of Megarap...

Hi, As you are no doubt aware, NHMUK R.3741 and NHMUK R.1831 have been named Mantellodon and Darwinsaurus respectively by Paul (2012). Gregory S. Paul (2012). "Notes on the...

Hi Taylor, I was kind of surprised to see that only a handful of specimens of sauropod species have complete necks. Regarding Giraffatitan, you didn't mention that the reclassif...

Hi, Since Tschopp et al. (2015) refer AMNH 7535 to Barosaurus and AMNH 7530 and SMA D16-3 to Kaatedocus, it may be imperative to update the paper by Taylor and Wedel to take int...

Hi Mike, I forgot to mention that the following Camarasaurus (or camarasaurid specimens) have complete or near-complete necks: 1. SMA 002 (referred to Cathetosaurus lewisi in...

With respect to juvenile tyrannosaurs found in Lancian-age strata in western North America besides CMNH 7541 and Jane, Snively and Longrich (2009) report on an undescribed juvenile...

One of the papers by Ji et al. has now been published --- the citation for this paper is as follows: Cheng Ji, Da-Yong Jiang, Ryosuke Motani, Olivier Rieppel, Wei-Cheng Hao & Zu...

Hi Yun, A new paper by Schmerge and Rothschild (2016) claims that Nanotyrannus is not just distinct from T. rex, but also an albertosaurine because CMNH 7541, Jane, and BHI 6437...

Hi Chase, The correct name for "Ornithomimus" affinis should be "Dryosaurus" grandis Lull, 1911. The truth of the matter is that Gilmore (1920) coined Ornithomimus affinis as a...

Hi, The Schott and Evans paper cited in the references section is now published: Schott, R. K. and Evans, D. C. (2016), Cranial variation and systematics of Foraminacephale b...

Due to the description of Hungarosaurus and Struthiosaurus languedocensis, it's arguable whether all non-osteoderm, non-cranial material can be assigned to S. austriacus because of...

Carr et al. (2017) note that the pneumatic foramen on the quadratojugal that Larson (2013) used to distinguish Nanotyrannus from T. rex is also present in Daspletosaurus horneri an...

The femur FMNH 13020 labeled as Argyrosaurus ?superbus? has been referred to Titanosauria indet. by Mannion and Otero (2012). Also, the results of the SVP abstract by Tschopp et al...

Hi, I forgot to mention that the euhelopodid classification of Daxiatitan by D'Emic (2012) is questioned by Mannion et al. (2013) and Poropat et al. (2016), who recover Daxiatit...

Brachiosaurus spp. should read Brachiosaurus altithorax in the cladogram due to the erection of Lusotitan for Brachiosaurus atalaiensis. Also, Baotianmansaurus and Dongyangosaurus...

If you have an opportunity, you might want to scrutinize the original description of the Maastrichtian form Qinlingosaurus by Xue et al. (1996) to see how it compare with Ruyangosa...

A new paper on Lethiscus by Pardo et al. (2017) recovers Aistopoda as stem-tetrapods, while recovering microsaurs and lysorophians as amniotes. In particular, their cladistic analy...

Now that Steneosaurus obtusidens is now renamed Lemmysuchus, "Steneosaurus" megarhinus should be entered into the data matrix for Johnson et al. (2017) to test the phylogenetic hyp...

Simon et al. (in press) describe the new Patagonian titanosaur Choconsaurus baileywillisi from the Huincul Formation (from which Argentinosaurus hails). Because Choconsaurus is rec...

Hi Chase, The statement in the abstract "This landmass, isolated from the western landmass Laramidia by a great inland sea known as the Western Interior Seaway, may have been a...

Hi Chase, I know you mentioned ornithomimosaur pedal phalanges from the Atlantic Coastal Plain that are more robust than AMNH 2551, 2552, and 2553, but Tsogtbaatar et al. (2018)...

Hi, Currie et al. (in press) report the relocation of the Nemegtosaurus holotype quarry and describe newly discovered postcranial remains from the Nemegtosaurus type locality th...

The description of the Borealopelta armor should help you further with your paper on Struthiosaurus: Brown, C. M. (2017). "An exceptionally preserved armored dinosaur reveals th...

Hi, The new somphospondylan Sibirotitan (Averianov et al., in press) should be added to the matrix because the cladistic analysis of Sibirotitan is noteworthy for hewing closely...

Hi Gunnar, A new paper is available online that will help with data matrices for lognkosaurians, rinconsaurians, and aeolosaurs: Bernardo J. Gonzàlez Riga; Philip D. Mannion;...

Hi, With respect to the Buitreraptor cladistic analysis: 1. Mahakala is placed with Halszkaraptor and Hulsanpes in the new dromaeosaur subfamily Halszkaraptorinae, which is r...

Hi, Sallam et al. (2018) describe the youngest African sauropod, Mansourasaurus, from the Campanian-age Quseir Formation of the Dakhla Oasis, Egypt. Because Mansourasaurus is re...

Hi, Given that the Teihivenator syntype AMNH 2550 is recovered as a relative of Bistahieversor by Brownstein (in press), I think you might want to discuss how AMNH 2550 compares...

I thought you might use the dataset of Guo et al. (2018) to see if the results of your analysis are any different or similar with respect to the Brusatte et al. and Cau et al. data...

Hi Chase, It's quite surprising to see that large neosuchians preyed upon large theropods in Appalachia the latest Cretaceous, but the name _"Struthiomimus" sedens_ you mentione...

Diez Diaz et al. (2018) recovers _Atsinganosaurus_, _Lirainosaurus_, and _Ampelosaurus_ in a clade within Lithostrotia that they name Lirainosaurinae (_Lohuecotitan_ and _Paludtita...

Hi, Carpenter (2018) has reclassified Amphicoelias fragillimus as a rebbachisaurid and erected Maraapunisaurus for it based on comparisons with known rebbachisaurids. Andrea Cau...

Hi, Zhang et al. (2019) report that the _Xinjiangtitan_ holotype preserves a complete cervical series based on new preparation of the holotype, and the holotype of _Lavocatisaur...

Hi, A new paper is available online: Rainer R. Schoch (2018). The putative lissamphibian stem-group: phylogeny and evolution of the dissorophoid temnospondyls. Journal of Pal...

Averianov and Efimov (2018) describe the new lithostrotian _Volgatitan simbirskiensis_ from the Early Cretaceous of the Volgograd region in European Russia, the first ever dinosaur...

Hi, With respect to the Pachycephalosauria phylogenetic analysis, Evans et al. (2018) describe new pachycephalosaur specimens from the Nemegt Formation, including a juvenile the...

An SVP 2018 abstract by Burnham et al. (2018) reports that a juvenile T. rex specimen (KUVP 156375) found in Montana has the same maxillary count as adult T. rex (12 maxillary teet...

Hi Mike, While reading the paper by Gallina et al. (2019) describing the new dicraeosaurid _Bajadasaurus_, I was dumbstruck to find out that _Amargasaurus_ preserves a complete...

Gorscak and O'Connor (2019) describe the new lithostrotian titanosaur _Mnyamawamtuka_ from the mid-Cretaceous Galula Formation of Tanzania, the third Cretaceous titanosaur to be na...

The cladistic analysis of Filippi et al. (2019) recovers their new taxon _Kaijutitan_ as a sister taxon of _Epachthosaurus_ and Eutitanosauria. The analysis also recovers _Andesaur...

Hi Taylor, Given that you recently suggested that the traditionally referred _Supersaurus_ specimen BYU 9024 might belong to _Barosaurus_ based on comparisons with the cervical...

Hi, Gonzalez-Riga et al. (2019) erect the name Colossosauria for the lithostrotian clade formed by Lognkosauria and Rinconsauria. Their cladistic analysis recovers Aeolosaurus a...

Mannion et al. (2019) recover Jiangshanosaurus and Dongyangosaurus outside Titanosauria but recover Daxiatitan and Xianshanosaurus inside Titanosauria as basal to Lithostrotia. Yon...

Hi, The dinosaur specimen from British Columbia that Arbour and Graves (2008) assigned to Neornithischia indeterminate has been described as a new genus and species of leptocera...

Averianov and Lopatin (in press) describe a new titanosaur from the Late Cretaceous Alagteeg Formation of Mongolia, _Abdarainurus barsboldi_, on the basis of several caudal vertebr...

Carr (2020) has released a new paper on updates to knowledge of Tyrannosaurus rex ontogeny, including info on how maturity and decrease in tooth count are correlated in T. rex spec...

Arbour et al. (2020) describe ankylosaur remains collected from the Cenomanian Dunvegan Formation in British Columbia in 1930. This material is considered too fragmentary to assign...

A cladistic analysis by Royo-Torres et al. (2020) recovers Euhelopodidae within Titanosauria, and it also happens to recover _Huanghetitan_ and _'H.' ruyangensis_ in disparate phyl...

Hi, The phylogenetic analysis of _Ruyangosaurus_ should be updated yet again to reflect the following new developments in titanosaur phylogeny: 1. Poropat et al. (2021) erect...