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来自摩洛哥阿斯夫拉上白垩统（土伦阶下部）阿克拉布组的厚齿鱼类（辐鳍鱼纲，厚齿鱼目）。

Pycnodont fishes (Actinopterygii, Pycnodontiformes) from the Upper Cretaceous (lower Turonian) Akrabou Formation of Asfla, Morocco.

作者信息

Cooper Samuel L A, Martill David M

机构信息

School of the Environment, Geography and Geological Sciences, University of Portsmouth, Burnaby Road, Portsmouth, PO1 3QL, UK.

出版信息

Cretac Res. 2020 Dec;116:104607. doi: 10.1016/j.cretres.2020.104607. Epub 2020 Aug 22.

DOI:10.1016/j.cretres.2020.104607
PMID:32863512
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7442934/
Abstract

The Upper Cretaceous (upper Cenomanian-middle Turonian) Akrabou Formation of Asfla, southeast Morocco is renowned for exceptionally preserved, often three-dimensional bony and cartilaginous fish fossils. Teleosts, rare holosteans and chondrichthyans are well known from the so-called 'Goulmima ichthyological assemblage', however pycnodonts (Actinopterygii, Pycnodontiformes) have received scant attention and remain undescribed until now. Five nominal species are recognised in the assemblage, including two new forms: gen. et sp. nov. and sp. nov. The Italian genus is reported in Morocco for the first time. Specimen taphonomy is examined in the context of substrate consistency and oxygenation of an outer shelf carbonate platform setting. Diversity and ecological disparity of the Goulmima assemblage is revised in regard to trophic partitioning with durophagy seemingly more diverse than previously recognised. Comparisons with other pycnodont-bearing horizons of similar age demonstrate strong faunal affinities between the Asfla pycnodonts and those in the western Tethys and South Atlantic.

摘要

摩洛哥东南部阿斯夫拉的上白垩统（晚森诺曼阶-中土伦阶）阿克拉布组以保存异常完好、通常为三维的硬骨鱼和软骨鱼化石而闻名。硬骨鱼、罕见的全骨鱼和软骨鱼在所谓的“古尔米马鱼类组合”中广为人知，然而，盾齿鱼（辐鳍鱼纲，盾齿鱼目）却很少受到关注，至今仍未被描述。该组合中识别出五个命名物种，包括两个新物种：新属新种和新种。意大利的属首次在摩洛哥被报道。在陆架外缘碳酸盐台地环境的基质一致性和氧合作用背景下对标本埋藏学进行了研究。根据食性划分对古尔米马组合的多样性和生态差异进行了修订，发现食骨习性似乎比以前认为的更加多样。与其他年龄相似的含盾齿鱼地层进行比较表明，阿斯夫拉盾齿鱼与西特提斯和南大西洋的盾齿鱼有很强的动物群亲缘关系。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6edf/7442934/560137820fa9/gr10_lrg.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6edf/7442934/6610a017647d/gr1_lrg.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6edf/7442934/6ab1006425b5/gr2_lrg.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6edf/7442934/f0240e30a767/gr3_lrg.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6edf/7442934/e7f7193c2772/gr4_lrg.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6edf/7442934/28a1af2fcb00/gr5_lrg.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6edf/7442934/ebfc11f97d7d/gr6_lrg.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6edf/7442934/e5514346d960/gr7_lrg.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6edf/7442934/9f025fffff64/gr8_lrg.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6edf/7442934/6a79eca51d6e/gr9_lrg.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6edf/7442934/560137820fa9/gr10_lrg.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6edf/7442934/6610a017647d/gr1_lrg.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6edf/7442934/6ab1006425b5/gr2_lrg.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6edf/7442934/f0240e30a767/gr3_lrg.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6edf/7442934/e7f7193c2772/gr4_lrg.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6edf/7442934/28a1af2fcb00/gr5_lrg.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6edf/7442934/ebfc11f97d7d/gr6_lrg.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6edf/7442934/e5514346d960/gr7_lrg.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6edf/7442934/9f025fffff64/gr8_lrg.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6edf/7442934/6a79eca51d6e/gr9_lrg.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6edf/7442934/560137820fa9/gr10_lrg.jpg

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