New Species of the Genus Arbacia (Echinoidea, Arbaciidae) from the Neogene of Chile

IF 1.2 4区 地球科学 Q3 PALEONTOLOGY Ameghiniana Pub Date : 2023-05-12 DOI:10.5710/AMGH.01.03.2023.3536
Erwan Courville, M. Gonzalez, F. Mourgues, E. Poulin, T. Saucède
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引用次数: 1

Abstract

Abstract. Recent fieldwork on Neogene deposits of northern Chile led to the discovery of new material, including three new species of the echinoid genus Arbacia: Arbacia quyllur sp. nov. from the Miocene, Arbacia terraeignotae sp. nov., and Arbacia larraini sp. nov. from the Pliocene. In the Pleistocene, the new material includes the first fossil occurrence of the extant species Arbacia spatuligera and new specimens of the extant species Tetrapygyus niger. The specimens and new species described here reveal the significant past diversity of the genus Arbacia and increase our knowledge of the overall diversity of the genus in South America, showing an older origin (upper Miocene) and higher species richness of the genus Arbacia along the Chilean coasts than previously thought. Resumen. Recientes trabajos de campo en el Neógeno del norte de Chile han permitido descubrir nuevos materiales, entre ellos tres nuevas especies del género de equinoideo Arbacia: Arbacia quyllur sp. nov. (Mioceno), Arbacia terraeignotae sp. nov. y Arbacia larraini sp. nov. (Plioceno), pero también la primera aparición de Arbacia spatuligera y nuevo material de Tetrapygyus niger (Pleistoceno). Los especímenes y las nuevas especies aquí descritas revelan la diversidad pasada del género Arbacia. Estos descubrimientos muestran la existencia de una mayor riqueza de Arbacia a lo largo de las costas chilenas y un origen más antiguo del género en la costa del Pacífico Sureste (Mioceno superior).
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标题智利新近纪棘球蚴属新种(棘球蚴总科,棘球蚴科)
摘要最近对智利北部新近纪沉积物的野外考察发现了新的材料,包括三种棘刺类植物Arbacia:来自中新世的Arbacia quyllur sp. nov,来自上新世的Arbacia terraeignotae sp. nov和Arbacia larraini sp. nov。在更新世,新材料包括现存种Arbacia spatuligera的首次化石发现和现存种Tetrapygyus niger的新标本。这里描述的标本和新种揭示了过去Arbacia属的显著多样性,并增加了我们对南美洲Arbacia属整体多样性的认识,显示了智利海岸Arbacia属的起源更早(中新世上)和物种丰富度比以前认为的要高。Resumen。在智利北部发现的新材料中,在智利北部发现的新材料中,在智利北部发现的新材料中,发现的新材料中含有equinoidea Arbacia quyllur sp. 11 (Mioceno),在智利北部发现的新材料中含有equinoidea Arbacia larraini sp. 11 (Plioceno),在智利北部发现的新材料中含有equinoidea . 11 (miloceno),在智利北部发现的新材料中含有equinoidea . 11 (miloceno),在智利北部发现的新材料中含有equinoidea . 11 (Plioceno)。Los especímenes y las nuevesespecies aquí描述了一种名为“varidsidad pasada del gassnero Arbacia”的植物。墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥墨西哥
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来源期刊
Ameghiniana
Ameghiniana 地学-古生物学
CiteScore
2.50
自引率
10.00%
发文量
21
期刊介绍: Ameghiniana is a bimonthly journal that publishes original contributions on all disciplines related to paleontology, with a special focus on the paleontology of Gondwana and the biotic history of the southern hemisphere. Published yearly since 1957, it has undoubtedly become the main palaeontological publication from Latin America. Ameghiniana has recently broadened its editorial board, reorganized its production process, and increased to a bimonthly frequency, which resulted in a significant decrease in the turn around time.
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