Morphological and temporal variation in early embryogenesis contributes to species divergence in Malawi cichlid fishes [0.03%]
马拉维丽鱼属慈鲷早期胚胎发育的形态和时间变化促成了物种分化
Aleksandra Marconi,Cassandra Zie Yang,Samuel McKay et al.
Aleksandra Marconi et al.
The cichlid fishes comprise the largest extant vertebrate family and are the quintessential example of rapid "explosive" adaptive radiations and phenotypic diversification. Despite low genetic divergence, East African cichlids harbor a spec...
Rory L Cooper,Ella F Nicklin,Liam J Rasch et al.
Rory L Cooper et al.
Vertebrate skin appendages are incredibly diverse. This diversity, which includes structures such as scales, feathers, and hair, likely evolved from a shared anatomical placode, suggesting broad conservation of the early development of thes...
Evolution and development of the mammalian jaw joint: Making a novel structure [0.03%]
哺乳动物颌关节的进化与发展：创造一个新的结构
Neal Anthwal,Abigail S Tucker
Neal Anthwal
A jaw joint between the squamosal and dentary is a defining feature of mammals and is referred to as the temporomandibular joint (TMJ) in humans. Driven by changes in dentition and jaw musculature, this new joint evolved early in the mammal...
Covariation of brain and skull shapes as a model to understand the role of crosstalk in development and evolution [0.03%]
大脑和头骨形状的协方差作为模型来理解交叉通讯在发育和进化中的作用
Andrew J Conith,Sylvie A Hope,R Craig Albertson
Andrew J Conith
Covariation among discrete phenotypes can arise due to selection for shared functions, and/or shared genetic and developmental underpinnings. The consequences of such phenotypic integration are far-reaching and can act to either facilitate ...
Gerardo A Cordero,Katie Birk,Sara Ruane et al.
Gerardo A Cordero et al.
Developing organisms are often exposed to fluctuating environments that destabilize tissue-scale processes and induce abnormal phenotypes. This might be common in species that lay eggs in the external environment and with little parental ca...
Breaking the constraint on the number of cervical vertebrae in mammals: On homeotic transformations in lorises and pottos [0.03%]
突破哺乳动物颈椎数目的限制——关于婴猴科动物的同源节律转换
Frietson Galis,Tom J M Van Dooren,Alexandra A E van der Geer
Frietson Galis
Mammals almost always have seven cervical vertebrae. The strong evolutionary constraint on changes in this number has been broken in sloths and manatees. We have proposed that the extremely low activity and metabolic rates of these species ...
Vertebrate cranial evolution: Contributions and conflict from the fossil record [0.03%]
脊椎动物头骨的演化：化石记录中的贡献与冲突
Zerina Johanson
Zerina Johanson
In modern vertebrates, the craniofacial skeleton is complex, comprising cartilage and bone of the neurocranium, dermatocranium and splanchnocranium (and their derivatives), housing a range of sensory structures such as eyes, nasal and vesti...
Asynchronized cell division in embryo-like fossils from the Ediacaran Zhenba microfossil assemblage [0.03%]
埃迪卡拉震瓦微化石组合中胚胎状化石的异步细胞分裂现象研究
Yuan Zhang,Xingliang Zhang,Cong Liu
Yuan Zhang
Ediacaran embryo-like spherical fossils exhibit diverse cell adhesion patterns resembling partial cleavage-stage embryos of living animals. Two three-celled specimens characterized by a pair of small cells overlying a large cell have been r...
Creating morphological diversity in reptilian temporal skull region: A review of potential developmental mechanisms [0.03%]
爬行颞区形态多样性的演化发育机制研究综述
Masayoshi Tokita,Hiromu Sato
Masayoshi Tokita
Reptilian skull morphology is highly diverse and broadly categorized into three categories based on the number and position of the temporal fenestrations: anapsid, synapsid, and diapsid. According to recent phylogenetic analysis, temporal f...
Modularity in the trilobite head consistent with the hypothesized segmental origin of the eyes [0.03%]
三叶虫头部的模块化与眼睛节段起源假说一致
Ernesto E Vargas-Parra,Melanie J Hopkins
Ernesto E Vargas-Parra
The trilobite head served multiple functions and was composed of several fused segments. Yet, the underlying organization of the trilobite head, and whether patterns are conserved across trilobites, remains unclear. Modeling the head as bei...