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Transitional evolutionary forms in chasmosaurine ceratopsid dinosaurs: evidence from the Campanian of New Mexico

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Carl Paul @CarlPaulin39406 961 days ago

@mcleod_jace @KellyPearsall3 @AiG https://t.co/N4TfWW40Ia 1At this point they are just PROPOSING THE IDEA and warn that it may simply be GROWTH STAGES OF RECOGNIZED FORMS This explosion of new taxa has led some researchers (Sampson & Loewen, 2010; Sampson et al., 2010) to propose that ceratopsids radiated through

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Hiroshi Kato @TyrannoDinoHiro 1445 days ago

RT @df9465: Basically the central embayment gets deeper through time (A-I, below from Fowler & Freedman Fowler 2020). Also note how the pos…

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The_Anti @Paleoart_Anti 1445 days ago

RT @df9465: Basically the central embayment gets deeper through time (A-I, below from Fowler & Freedman Fowler 2020). Also note how the pos…

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Asa @Asa_dinoclub414 1445 days ago

RT @df9465: Basically the central embayment gets deeper through time (A-I, below from Fowler & Freedman Fowler 2020). Also note how the pos…

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$.inequali$ sitting on fence @sinequalis 1445 days ago

RT @df9465: Basically the central embayment gets deeper through time (A-I, below from Fowler & Freedman Fowler 2020). Also note how the pos…

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らえらぷす/ジュラルC @GET_AWAY_TRIKE 1445 days ago

RT @df9465: Basically the central embayment gets deeper through time (A-I, below from Fowler & Freedman Fowler 2020). Also note how the pos…

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Denver Fowler Ph.D @df9465 1445 days ago

Basically the central embayment gets deeper through time (A-I, below from Fowler & Freedman Fowler 2020). Also note how the posterior bar of the parietal is thin and strut like (A, B) but then starts to get deeper and more rounded (C, F-H). From: https://t.co/UJE4JCOSOx https://t.co/ziMjZq34BX

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Denver Fowler Ph.D @df9465 1467 days ago

@LancianIdolatry The maps show that during the mid Santonian, and at times Campanian, northern and southern parts of the Laramidia coastal plain were cut off from each other. This probably caused vicariance in various dinosaur lineages (e.g. chasmosaurines). Explained in https://t.co/Z2tUsBrHTZ

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y.araumi @kaosdrake 1498 days ago

RT @hirolichyi10: #ヒロくん論文紹介米ニューメキシコ州の白亜紀後期カートランド層(約7500万年前-約7340万年前)から産出した角竜カスモサウルス亜科2種、ナヴァジョケラトプス、タルミノカヴュスの命名・記載。ペンタケラトプスとアンキケラトプスの中間に位…

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