Tubular shell infestations in some Mississippian spirilophous brachiopods

• Autorzy: Balinski A. , Sun Y.
• Języki publikacji: EN

Abstrakty

EN

Evidence of brachiopod shell infestation by tube dwelling parasitic–commensal organisms is very rare in the fossil record. The oldest record of this kind of biotic interaction is known as Eodiorygma acrotretophilia from the Early Cambrian phosphatic acrotretoid Linnarsonia. The youngest evidence of parasitic infestation was documented in the Early Cretaceous rhynchonellide Peregrinella multicarinata. Two other records of vermiform tubes inside brachiopod shells come from the Devonian. These are Diorygma atrypophilia, infesting Givetian atrypide shells, and Burrinjuckia spiriferidophilia, found in some Emsian spiriferides. Here we describe the fifth record of this kind of infestation for which a name Haplorygma dorsalis ichnogen. et ichnosp. nov. is proposed. The tubular infestation structure was revealed in two silicified dorsal valves of spirolophous brachiopods found in the Mississippian Muhua Formation of the Southern China. The affinity of the tube−dwelling organism is rather enigmatic, but its annelid relationship and kleptoparasitic nature seems highly probable. In addition, the phoronid affinity of Diorygma is here questioned.

Słowa kluczowe

EN

paleontology; tubular shell; shell; infestation; Mississippian brachiopod; spirilophous brachiopod; brachiopod; Brachiopoda; Spiriferida; Spiriferinida; biotic interaction; endosymbiont; Muhua Formation; China

• Wydawca: -
• Czasopismo: Acta Palaeontologica Polonica
• Rocznik: 2010
• Tom: 55
• Numer: 4
• Opis fizyczny: p.689-694,fig.,ref.

Twórcy

autor

Balinski A.

• Institute of Paleobiology, Polish Academy of Sciences, Twarda 51/55, 00-818 Warsaw, Poland

autor

Sun Y.

• Department of Geology, Peking University, Beijing 100871, China

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