Cuticular ultrastructure of fossil and living homolodromiid crabs [Decapoda: Brachyura]

• Autorzy: Feldmann R M , Gazdzicki A

Warianty tytułu

PL

Mikrostruktura pancerzy kopalnych i wspolczesnych krabow z rodziny Homolodromiidae

• Języki publikacji: EN

Abstrakty

EN

Comparison of cuticular ultrastructure in Antarctidromia inflata Förster, 1985 from the Miocene Cape Melville Formation on King George Island, Antarctica, with that of the confamilial, extant Homolodromia paradoxa A. Milne Edwards, 1880 suggests that the more rigid carapace of the fossil form results from a relatively thicker, more strongly calcified exocuticle. Epicuticle, exocuticle, and endocuticle are all recognizable on the fossils; however, adherence of the epicuticle to the counterpart may result in misinterpretation of the fine sculpture on the carapace. Absence of dissolution features in the endocuticle confirm conclusions, based upon completeness of remains, that the specimens of Antarctidromia inflata represent corpses, not molts.

PL

Badania mikrostruktury pancerzy krabów z rodziny Homolodromiidae Alcock, 1899 oparto na pochodzącym z utworów wczesnego miocenu Wyspy Króla Jerzego (Antarktyka) gatunku Antarctidromia inflata Forster, 1985 oraz żyjącej współcześnie w rejonie Karaibów Homolodromia paradoxa A. Milne Edwards, 1880. U okazów kopalnych rozpoznano, na podstawie porównania z okazami współczesnymi, epikutykulę, egzokutykulę i endokutykulę oraz przedstawiono ich charakterystykę w oparciu o badania w mikroskopie skaningowym. Kompletne zachowanie okazów, a także obecność endokutykuli u Antarctidromia inflata wskazuje, że reprezentują one zespół pogrzebanych osobników, a nie wylinki.

Słowa kluczowe

PL

egzokutykula; fauna kopalna; Homolodromiidae; pancerze; Wyspy Krola Jerzego; Decapoda; Antarktyka; Antarctidromia inflata; miocen; Brachyura; kraby; Karaiby; paleontologia; mikrostruktura; Homolodromia paradoxa; epikutykula; endokutykula

• Wydawca: -
• Czasopismo: Acta Palaeontologica Polonica
• Rocznik: 1998
• Tom: 43
• Numer: 1
• Opis fizyczny: s.1-19,fot.,map.,bibliogr.

Twórcy

autor

Feldmann R M

• Department of Geology, Kent State University, Kent, Ohio, 44242, USA

autor

Gazdzicki A

• Instytut Paleobiologii PAN, ul. Twarda 51/55, PL-00-818 Warszawa, Poland

Bibliografia

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