Schlagwort-Archive: Early Cretaceous

A very snappy bird with strange trousers – Cruralispennia multidonta Wang et al.

This tiny thing could be called the „Cretaceous Nicobar Pigeon“, it had somewhat elongated neck feathers, the typical short tail, or rather a not-a-tail-at-all tail so typical for many of those strange Cretaceous enantiornithine birds that we now already know.

The strange-feathered creature comes from China, where it lived some 130 Million years ago in the late Early Cretaceous.

The genus name refers to its crural feathers (bird trousers) which are actually found in many birds, but here they are shaped like nothing ever seen before, maybe like a thin sheet of ceratin with a chewed end, or brush-like end, not at all like a feather. The species name again refers to its multi-toothed beak.

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a sketch of which I hope that I can produce a painting from some day ….

The bird reached a size of about 10 to maybe 11 or 12 cm when fully grown. The body feathers appear to have been more hair- than feather-like, and they may have been dark, while those on its neck were somewhat elongated and apparently were even glossy [1] … why not. 

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Unfortunatly I could not find any plant species from the same place and time.

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References:

[1] Min Wang; Jingmai K. O’Connor; Yanhong Pan; Zhonghe Zhou: A bizarre Early Cretaceous enantiornithine bird with unique crural feathers and an ornithuromorph plough-shaped pygostyle. Nature Communications 8: 1-12. 2017

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edited: 19.11.2019

… small sketch

Cratoavis cearensis, an enantiornithiform bird from the lower Cretaceous of the extremely interesting Crato Formation in Brazil.

This bird is known from a single specimen that apparently was not fully grown, it was altogether only about 12 cm long (including the tail streamers)!

Yet, I have no idea how large it may have got when fully adult, who knows.

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The Crato Formation is otherwise known for its numerous plant fossils, many of them angiosperms, so I cannot really decide yet which plant species may fit with this bird, but time will show ….

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edited: 02.04.2019

And yet another sketch …

… this time of Eoalulavis hoyasi Sanz, Chiappe, Perez-Moreno, Buscalioni, Moratalla, Ortega & Poyato-Ariza.

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This probably somewhat semiaquatic bird was described in 1996 from Las Hoyas near the city of Cuenca, Spain.  

The decomposing plant in the background is a cycad, Almargemia dentata (Heer) Florin, from roughly about the same place and time.

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edited: 13.07.2017