Chaetetids from the Upper Carboniferous Buckhorn Asphalt Quarry Lagerstätte, Oklahoma
Seuß B, Senowbari-Daryan B, Nützel A (2013)
Publication Language: English
Publication Type: Conference contribution, Abstract of a poster
Publication year: 2013
Event location: Göttingen
Abstract
Chaetetid sponges from the Desmoinesian Buckhorn Asphalt Quarry Lagerstätte represent the largest benthic organisms in this outcrop (max. diameter: 21 cm, max. height: 8.3 cm). Deposition of the chaetetid-bearing sediments occurred in a shallow (euphotic zone II-III) marine setting near the palaeo-equator. The siliciclastic-carbonatic sediments from the Lagerstätte were impregnated by migrating hydrocarbons during or shortly after deposition hence, fossil preservation is generally outstanding. Chaetetid skeletons from the quarry originally consisted of high Mg-calcite. Two morphotypes are present, comprising domical and laminar growth, which indicates genetic rather than environmental control. Internal skeletal features comprise tabulae, spine-like projections, pseudoseptae, growth disturbances, and greyish structures. Tubule diameter and length is variable, and spicules are absent. Skeletal fragmentation is common and indicates complex taphonomic mechanisms. Some specimens display large incisions indicating physical impact. The skeletal surface is also often covered by microbial mats associated with Mn-carbonatic cements.
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Germany (DE)How to cite
APA:
Seuß, B., Senowbari-Daryan, B., & Nützel, A. (2013). Chaetetids from the Upper Carboniferous Buckhorn Asphalt Quarry Lagerstätte, Oklahoma. Poster presentation at Annual Meeting of the Paläontologische Gesellschaft, Göttingen.
MLA:
Seuß, Barbara, Baba Senowbari-Daryan, and Alexander Nützel. "Chaetetids from the Upper Carboniferous Buckhorn Asphalt Quarry Lagerstätte, Oklahoma." Presented at Annual Meeting of the Paläontologische Gesellschaft, Göttingen 2013.
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