{"title":"尼日利亚首次发现可能存在的大型水生蛇翼蛇(蛇纲,古蛇科),并在埃及发现有进一步记录的史威因富特翼蛇","authors":"G. Georgalis","doi":"10.1080/03115518.2023.2217874","DOIUrl":null,"url":null,"abstract":"Abstract Pterosphenus was a genus of giant aquatic snakes distributed across North and South America, Asia and Africa. In Africa, the known occurrences of the genus are scarce, comprising isolated vertebrae and ribs from Egypt, Libya, Morocco and Angola. Here, a trunk vertebra from the middle Eocene Ameki Formation of Ameki in Nigeria is tentatively referred to Pterosphenus. For comparative purposes, multiple previously undocumented trunk vertebrae from the upper Eocene of Fayum in Egypt are also illustrated—these pertain to Pterosphenus schweinfurthi, the only named species of Pterosphenus currently recognized from Africa. The Ameki Formation vertebra is significantly smaller and likely represents an osteologically immature individual. This new find hints at a higher diversity of palaeophiids from Nigeria, which otherwise include Palaeophis africanus from the age-equivalent middle Eocene Oshosun Formation. Georgios L. Georgalis [georgalis@isez.pan.krakow.pl], Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Sławkowska 17, 31‑016 Kraków, Poland.","PeriodicalId":272731,"journal":{"name":"Alcheringa: An Australasian Journal of Palaeontology","volume":"7 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2023-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"First potential occurrence of the large aquatic snake Pterosphenus (Serpentes, Palaeophiidae) from Nigeria, with further documentation of Pterosphenus schweinfurthi from Egypt\",\"authors\":\"G. Georgalis\",\"doi\":\"10.1080/03115518.2023.2217874\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Abstract Pterosphenus was a genus of giant aquatic snakes distributed across North and South America, Asia and Africa. In Africa, the known occurrences of the genus are scarce, comprising isolated vertebrae and ribs from Egypt, Libya, Morocco and Angola. Here, a trunk vertebra from the middle Eocene Ameki Formation of Ameki in Nigeria is tentatively referred to Pterosphenus. For comparative purposes, multiple previously undocumented trunk vertebrae from the upper Eocene of Fayum in Egypt are also illustrated—these pertain to Pterosphenus schweinfurthi, the only named species of Pterosphenus currently recognized from Africa. The Ameki Formation vertebra is significantly smaller and likely represents an osteologically immature individual. This new find hints at a higher diversity of palaeophiids from Nigeria, which otherwise include Palaeophis africanus from the age-equivalent middle Eocene Oshosun Formation. Georgios L. Georgalis [georgalis@isez.pan.krakow.pl], Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Sławkowska 17, 31‑016 Kraków, Poland.\",\"PeriodicalId\":272731,\"journal\":{\"name\":\"Alcheringa: An Australasian Journal of Palaeontology\",\"volume\":\"7 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-06-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Alcheringa: An Australasian Journal of Palaeontology\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1080/03115518.2023.2217874\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Alcheringa: An Australasian Journal of Palaeontology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1080/03115518.2023.2217874","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
摘要
摘要翼蛇是一种分布于南北美洲、亚洲和非洲的巨型水生蛇属。在非洲,已知的该属罕见,包括来自埃及、利比亚、摩洛哥和安哥拉的孤立椎骨和肋骨。在这里,来自尼日利亚Ameki的始新世中期Ameki组的主干椎骨暂定为Pterosphenus。为了便于比较,本文还展示了来自埃及法尤姆始新世上部的多个先前未记载的躯干椎骨,这些椎骨属于史魏因富特翼龙,这是目前已知的唯一一种来自非洲的翼龙。Ameki组椎体明显较小,可能代表了一个骨发育不成熟的个体。这个新发现暗示了来自尼日利亚的古嗜蛇动物的更高多样性,除此之外还包括来自始新世中期Oshosun组的非洲古嗜蛇动物。Georgios L. Georgalis [georgalis@isez.pan.krakow.pl],波兰科学院动物系统学和进化研究所,Sławkowska 17,31‑016 Kraków,波兰。
First potential occurrence of the large aquatic snake Pterosphenus (Serpentes, Palaeophiidae) from Nigeria, with further documentation of Pterosphenus schweinfurthi from Egypt
Abstract Pterosphenus was a genus of giant aquatic snakes distributed across North and South America, Asia and Africa. In Africa, the known occurrences of the genus are scarce, comprising isolated vertebrae and ribs from Egypt, Libya, Morocco and Angola. Here, a trunk vertebra from the middle Eocene Ameki Formation of Ameki in Nigeria is tentatively referred to Pterosphenus. For comparative purposes, multiple previously undocumented trunk vertebrae from the upper Eocene of Fayum in Egypt are also illustrated—these pertain to Pterosphenus schweinfurthi, the only named species of Pterosphenus currently recognized from Africa. The Ameki Formation vertebra is significantly smaller and likely represents an osteologically immature individual. This new find hints at a higher diversity of palaeophiids from Nigeria, which otherwise include Palaeophis africanus from the age-equivalent middle Eocene Oshosun Formation. Georgios L. Georgalis [georgalis@isez.pan.krakow.pl], Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Sławkowska 17, 31‑016 Kraków, Poland.