Colour Patterns in Early Devonian Cephalopods from the Barrandian Area: Taphonomy and taxonomy

@inproceedings{Turek2009ColourPI,
  title={Colour Patterns in Early Devonian Cephalopods from the Barrandian Area: Taphonomy and taxonomy},
  author={V. Turek},
  year={2009}
}
Five cephalopod specimens from the Lower Devonian of Bohemia (Czech Republic) preserve colour patterns. They include two taxonomically undeterminable orthoceratoids and three oncocerid nautiloids assigned to the genus Ptenoceras. The two fragments of orthocone cephalopods from the lowest Devonian strata (Lochkovian, Monograptus uniformis Zone) display colour patterns unusual in orthoceratoids. They have irregular undulating and zigzag strips that are preserved on counterparts of adapertural… Expand
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References

SHOWING 1-10 OF 72 REFERENCES
Shell morphology and palaeoecology of Praenatica gregaria Perner, 1903 from the Koněprusy Limestone (Lower Devonian) of Bohemia (Czech Republic)
Praenatica gregaria Perner, 1903 is an Early Devonian (Pragian) gastropod that is judged to be adapted to a stationary living habit on the tegmen of camerate crinoids. More than one thousandExpand
Color banding in the Triassic terebratulid brachiopod Coenothyris from the Muschelkalk of Central Europe
TLDR
Shell material is well-preserved; energy-dispersive spectroscopy and microprobe analysis has been unable to detect compositional differences between colored and noncolored shell, which supports the organic origin of the color patterns as suggested for Devonian terebratulids by Richter (1919). Expand
Minute Silurian Oncocerid Nautiloids with Unusual Colour Patterns
TLDR
Pomerantsoceras represents, except for un-revised poorly understood taxa, the single known oncocerid genus surviving the end-Ordovician extinction events and supports the hypothesis that colour pattern functioned as camouflage and its evolution was under adaptive control. Expand
ORIGINAL SHELL COLOURATION IN LATE PLEISTOCENE TEREBRATULID BRACHIOPODS FROM NEW ZEALAND
A Late Pleistocene locality (approx. 80 ka) in the Wanganui Basin, New Zealand, has yielded large numbers of the brachiopod Calloria inconspicua displaying original shell colouration. In total 78%Expand
Platyceratid gastropods from the Oriskany Sandstone (Lower Devonian) near Cumberland, Maryland; synonymies, preservation and color markings
A large collection of silicified platyceratid gastropods from the Ridgeley Member of the Oriskany Sandstone, near Cumberland, Maryland, contains specimens of Platyceras (Platyceras) gebharti Conrad,Expand
The fossil record, function, and possible origins of shell color patterns in Paleozoic marine invertebrates
TLDR
The authors propose a hypothesis that involves three developmental phases in the evolution of invertebrate color patterns: the incorporation of metabolic by-products into shells and carapaces as a means of disposal of dietary or metabolic wastes, use of these pigments and patterns as an environmental adaptation, and display during and following the evolution in predators sufficiently sophisticated to see the patterns. Expand
AMMONOID SHELL STRUCTURES OF PRIMARY ORGANIC COMPOSITION
Palaeozoic and Mesozoic cephalopod conchs occasionally reveal dark organic coatings at the aperture. A number of these coatings, including still unrecorded examples, are described, figured andExpand
Color pattern on a martiniid brachiopod from South China
More than 70 species of Paleozoic articulate brachiopods with color patterns have been reported in the literature (see Blodgett et al., 1983, table 1; Table 1). The majority of them are DevonianExpand
Connecting ring structure and its significance for classification of the orthoceratid cephalopods
The connecting ring in orthoceratids is composed of two calcified layers: an outer spherulitic-prismatic and an inner calcified-perforate. The spherulitic-prismatic layer is a direct continuation ofExpand
Color Patterns in Ammonoids
A color pattern in an ammonoid was first reported and illustrated by d’Orbigny in 1842 (p. 185, Pl. 45, Fig. 4). He recognized that the pattern preserved on the shell of a specimen of AsterocerasExpand
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