DOI: 10.1016/j.palaeo.2016.06.017
论文题名: Drill hole convergence and a quantitative analysis of drill holes in mollusks and brachiopods from the Triassic of Italy and Poland
作者: Klompmaker A.A. ; Nützel A. ; Kaim A.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2016
卷: 457 起始页码: 342
结束页码: 359
语种: 英语
英文关键词: Bivalvia
; Brachiopoda
; Gastropoda
; Naticidae
; Parasitism
; Predation
英文摘要: The history of predation is recorded primarily from drilling in Cenozoic invertebrates. Quantitative data are uncommon from the Triassic, a period before the appearance and radiation of many known drill hole producers such as various gastropod families and octopods. We present quantitative evidence of drilling from the Late Triassic (Carnian) Cassian Formation of Italy and the Middle Triassic (Anisian) Lower Muschelkalk of Poland, documenting the first drill holes in Triassic brachiopods. A single brachiopod with a cylindrical, complete drill hole was found in a brachiopod sample from of Poland (drilling percentage = 0.3%, n = 365). The Cassian Formation yielded drill holes in gastropods, bivalves, and brachiopods, indicating that more species are drilled than was known previously. The minimum drilling percentage exclusive of incomplete drill holes of a sample from the Stuores Wiesen (Cassian Formation) is 1.7% (n = 116.5). Prey selectivity is evident: complete drill holes are primarily present in one gastropod species, Polygyrina lommeli (11.8% of specimens with a complete drill hole), whereas other common species were not drilled. Single drill holes in brachiopods are cylindrical and complete and may be predatory in origin. Multiple drill holes in mollusks are common, and drill holes are parabolic and often incomplete with a central boss, resembling the shape of drill holes produced by extant naticid gastropods. A survey of the Paleozoic literature showed that such drill holes are also present in Devonian and Carboniferous brachiopods. However, naticids did not evolve until the Cretaceous so we propose the term “drill hole convergence” for similar-shaped drill holes produced by different organisms. The Triassic parabolic drill holes are not caused by domicile-seeking or boring organisms. Instead, we favor a predatory origin of these drill holes, but we cannot entirely rule out parasitism. Surveying other Triassic invertebrate assemblages should yield more evidence of drilling. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68357
Appears in Collections: 过去全球变化的重建
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作者单位: Florida Museum of Natural History, University of Florida, 1659 Museum Road, Gainesville, FL, United States; Department of Integrative Biology, Museum of Paleontology, University of California, 1005 Valley Life Sciences Building #3140, Berkeley, CA, United States; SNSB-Bayerische Staatssammlung für Paläontologie und Geologie, Department für Geo- und Umweltwissenschaften, Paläontologie & Geobiologie, Geobio-Centre, Ludwig-Maximilians-Universität München, Munich, Germany; Instytut Paleobiologii PAN, ul. Twarda 51/55, Warsaw, Poland
Recommended Citation:
Klompmaker A.A.,Nützel A.,Kaim A.. Drill hole convergence and a quantitative analysis of drill holes in mollusks and brachiopods from the Triassic of Italy and Poland[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2016-01-01,457