新西兰查塔姆群岛的白垩纪晚期软体动物

IF 1.2 4区地球科学 Q3 PALEONTOLOGY

Alcheringa Pub Date : 1998-01-01 DOI:10.1080/03115519808619238

J. Stilwell

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引用次数: 25

摘要

来自新西兰查塔姆群岛的白垩纪软体动物(双壳纲、腹足纲、蹼足纲)由皮特岛Kahuitara凝灰岩中的37种中等多样性的动物群组成。至少有16个(c.43%)分类群与新西兰大陆物种同种，至少有15个(c.41%)分类群是查塔姆群岛特有的。提出的新种有Crenella n. sp、Chlamys (Lyriochlamys) n. sp、Chlamys s. l.n . sp、Camptonectes n. sp、Eburneopecten freneixae n. sp、Dimyodon n. sp、purpurrocardia n. sp、Lahillia n. sp、Solyma flemingae n. sp、Brookula s. l.n . sp、Calliomphalus s. l.n . sp、Pyrgulifera kahuitara n. sp、Ageria?多数分类群(41%)为足部悬浮食性双壳类，占白垩纪大型动物群的主导地位。较不占优势的是水生悬浮食性双壳类(30%)。下层捕食者(约14%)、沉积物捕食者(8%)和食肉动物(5%)是次要组成部分。提倡开放的海洋浅陆架环境。一个最新的白垩纪(坎帕尼亚-马斯特里赫特)…

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Late Cretaceous Mollusca from the Chatham Islands, New Zealand

The Cretaceous Mollusca (Bivalvia, Gastropoda, Scaphopoda) from the Chatham Islands, New Zealand consists of a moderately diverse faunule of 37 species in the Kahuitara Tuff of Pitt Island. At least 16 (c.43%) of the taxa are conspecific with mainland New Zealand species and at least 15 (c.41%) taxa are endemic to Chatham Islands. New species proposed are Crenella n. sp., Chlamys (Lyriochlamys) n. sp., Chlamys s. l. n. sp., Camptonectes n. sp., Eburneopecten freneixae n. sp., Dimyodon n. sp., Purpurocardia n. sp., Lahillia n. sp., Solyma flemingae n. sp., Brookula s. l. n. sp., Calliomphalus s. l. n. sp., Pyrgulifera kahuitara n. sp., and Ageria? n. sp. Most taxa (c.41%) are epifaunal suspension feeding bivalves and dominate the Cretaceous macrofauna. Less dominant are infaunal suspension feeding bivalves (30%). Epifaunal browsers (c.14%), deposit feeders (8%) and carnivores (5%) are minor components. An open marine, shallow shelf environment is advocated. A latest Cretaceous (Campanian?-Maastrichtian) ag...

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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.