Modern birds possess highly encephalized brains that evolved from non-avian dinosaurs. Evolutionary shifts in developmental timing, namely juvenilization of adult phenotypes, have been proposed as a driver of head evolution along the dinosaur-bird transition, including brain morphology. Testing this ...
分析句子结构可知,an embryo和preserve之间为被动关系,第一空故用过去分词;lie和an embryo为主动关系,故用现在分词lying。故选:C。相关推荐 1Researchers who have been working on non-avian dinosaurs were surprised to see an embryo beautifully ___inside a dinosaur egg,___ in a bird-like posture.( ...
分享一篇还热乎的论文,“ The accuracy and precision of body mass estimation in non-avian dinosaurs ”,作者是Nicolas Campione。 相信关注恐龙体重估算的大家对这个作者不会很陌生,他2014年发表的恐龙体重估算公式,是现在应用最为广泛的公式之一。新文章建设性的讨论和评估的在恐龙体重估算中长存的两个思路,体积...
This is only the second reported Brodie abscess in non-avian dinosaurs and the first documented occurrence in herbivorous dinosaurs. The presence of a Brodie abscess, known only in mammalian pathological literature, suggest mammalian descriptors for bone infection may be applicable to non-avian ...
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Dinosaurs were the dominant vertebrates of late Mesozoic terrestrial ecosystems. Part of this success may be due to the acquisition of an herbivorous diet in several major dinosaur clades. This study attempts to identify the feeding adaptations of herbivorous dinosaurs, and also considers some aspects...
we apply bioinformatic and molecular cytogenetic approaches to determine the genomic structure of the diapsid common ancestor. We then infer the events that likely occurred along this lineage from theropod dinosaurs through to modern birds. Our results suggest that most elements of a typical ‘avian-...
Dinosaurs had growth rates intermediate between similar sized/scaled-up reptiles and mammals, but a much lower rate than scaled-up birds. All dinosaurian growth rates were within the range of extant reptiles and mammals, and were lower than those of birds. Under the assumption that growth rate...
New information on paleopathologies in non-avian theropod dinosaurs: a case study on South American abelisaurids doi:10.1186/s12862-023-02187-xBMC Ecology & EvolutionBaiano, Mattia A.Cerda, Ignacio A.Bertozzo, FilippoPol, Diego
2007 Growth patterns in brood- ing dinosaurs reveals the timing of sexual maturity in non-avian dinosaurs and genesis of the avian condition. Biol. Lett. 3, 558-561.Erickson GM, Rogers KC, Varricchio DJ, Norell MA, Xu X. 2007. Growth patterns in brooding dinosaurs reveals the timing of...