新西兰查塔姆群岛的白垩纪苔藓虫

IF 1.2 4区地球科学 Q3 PALEONTOLOGY

Alcheringa Pub Date : 1996-01-01 DOI:10.1080/03115519608619474

P. Taylor

{"title":"新西兰查塔姆群岛的白垩纪苔藓虫","authors":"P. Taylor","doi":"10.1080/03115519608619474","DOIUrl":null,"url":null,"abstract":"Two bryozoan species have been found in the Kahuitara Tuff (Piripauan-Haumurian Stages; equivalent to Campanian-Maastrichtian) of Pitt Island, in the Chatham Islands, about 900 km east of the South Island of New Zealand. Cretaceous bryozoans are rare in Australasia, and the two species in this paper are the first to be formally described from New Zealand. Both species have thick dendroid colonies but whereas Ceriocava maculata sp. nov. is an unequivocal cerioporine cyclostome, the other species — Chiplonkarina campbelli sp. nov. — is more problematical and is interpreted as an aberrant ‘malacostegan’ cheilostome. Like previously described species of Chiplonkarina, C. campbelli has interzooidal walls with a central crenulated layer, indicating the former presence of an intercalary cuticle of the type found in many cheilostomes but unknown in cyclostomes. The anomalous global biogeographical distribution of bryozoans during the Cretaceous is briefly discussed.","PeriodicalId":50830,"journal":{"name":"Alcheringa","volume":"20 1","pages":"315-327"},"PeriodicalIF":1.2000,"publicationDate":"1996-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/03115519608619474","citationCount":"11","resultStr":"{\"title\":\"Cretaceous bryozoans from the Chatham Islands, New Zealand\",\"authors\":\"P. Taylor\",\"doi\":\"10.1080/03115519608619474\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Two bryozoan species have been found in the Kahuitara Tuff (Piripauan-Haumurian Stages; equivalent to Campanian-Maastrichtian) of Pitt Island, in the Chatham Islands, about 900 km east of the South Island of New Zealand. Cretaceous bryozoans are rare in Australasia, and the two species in this paper are the first to be formally described from New Zealand. Both species have thick dendroid colonies but whereas Ceriocava maculata sp. nov. is an unequivocal cerioporine cyclostome, the other species — Chiplonkarina campbelli sp. nov. — is more problematical and is interpreted as an aberrant ‘malacostegan’ cheilostome. Like previously described species of Chiplonkarina, C. campbelli has interzooidal walls with a central crenulated layer, indicating the former presence of an intercalary cuticle of the type found in many cheilostomes but unknown in cyclostomes. The anomalous global biogeographical distribution of bryozoans during the Cretaceous is briefly discussed.\",\"PeriodicalId\":50830,\"journal\":{\"name\":\"Alcheringa\",\"volume\":\"20 1\",\"pages\":\"315-327\"},\"PeriodicalIF\":1.2000,\"publicationDate\":\"1996-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1080/03115519608619474\",\"citationCount\":\"11\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Alcheringa\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://doi.org/10.1080/03115519608619474\",\"RegionNum\":4,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"PALEONTOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Alcheringa","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.1080/03115519608619474","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PALEONTOLOGY","Score":null,"Total":0}

引用次数: 11

摘要

在Kahuitara凝灰岩(Piripauan-Haumurian阶段)发现了两种苔藓虫;相当于坎帕尼亚-马斯特里赫特语)的皮特岛，在查塔姆群岛，新西兰南岛以东约900公里。白垩纪苔藓虫在澳大拉西亚是罕见的，本文中的两个物种是第一个从新西兰正式描述的物种。这两个物种都有厚实的树突菌落，但Ceriocava maculata sp. nov是一个明确的cerioporine环口动物，而另一个物种Chiplonkarina campbelli sp. nov则更有问题，被解释为一种异常的“malacostegan”环口动物。与先前描述的Chiplonkarina物种一样，C. campbelli具有具有中央圆齿层的动物间壁，表明以前存在于许多唇齿动物中但在环口动物中未知的类间角质层。简要讨论了白垩纪苔藓虫的全球异常生物地理分布。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Cretaceous bryozoans from the Chatham Islands, New Zealand

Two bryozoan species have been found in the Kahuitara Tuff (Piripauan-Haumurian Stages; equivalent to Campanian-Maastrichtian) of Pitt Island, in the Chatham Islands, about 900 km east of the South Island of New Zealand. Cretaceous bryozoans are rare in Australasia, and the two species in this paper are the first to be formally described from New Zealand. Both species have thick dendroid colonies but whereas Ceriocava maculata sp. nov. is an unequivocal cerioporine cyclostome, the other species — Chiplonkarina campbelli sp. nov. — is more problematical and is interpreted as an aberrant ‘malacostegan’ cheilostome. Like previously described species of Chiplonkarina, C. campbelli has interzooidal walls with a central crenulated layer, indicating the former presence of an intercalary cuticle of the type found in many cheilostomes but unknown in cyclostomes. The anomalous global biogeographical distribution of bryozoans during the Cretaceous is briefly discussed.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Alcheringa 地学-古生物学

CiteScore

2.60

自引率

7.70%

发文量

审稿时长

>12 weeks

期刊介绍： Alcheringa : An Australasian Journal of Palaeontology is the official journal of the Australasian Palaeontologists. Alcheringa covers all aspects of palaeontology and its ramifications into the earth and biological sciences, including: Taxonomy- Biostratigraphy- Micropalaeontology- Vertebrate palaeontology- Palaeobotany- Palynology- Palaeobiology- Palaeoanatomy- Palaeoecology- Biostratinomy- Biogeography- Chronobiology- Biogeochemistry- Palichnology. Review articles are welcome, and may be solicited from time to time. Thematic issues are also possible. Emphasis is placed on high quality and informative illustration, in both line drawings and photographs. Papers of general significance may receive preference over those of more local interest.