Tribal1990 hat geschrieben: ↑Sonntag 10. April 2022, 15:35
Der Ichthyosaurier wurde nun als Aegirosaurus sp. beschrieben.
Delsett LL, Friis H, Kölbl-Ebert M, Hurum JH. 2022. The soft tissue and skeletal anatomy of two Late Jurassic
ichthyosaur specimens from the Solnhofen archipelago. PeerJ 10:e13173
Link:
https://www.researchgate.net/profile/He ... ion_detail
ABSTRACT
Ichthyosaurs from the Solnhofen Lagerstätte are among the only examples of soft
tissue preservation in the major Middle Jurassic–middle Cretaceous family
Ophthalmosauridae. However, few such specimens are currently described, and the
taphonomical pathways for the preservation of soft tissue are not well understood.
In order to answer this, two new ichthyosaur specimens, one nearly complete and
one isolated tail, are described here. The nearly complete specimen is assigned to
Aegirosaurus sp. It is accompanied by large amounts of incrustation pseudomorphs
(epimorphs) of soft tissue preserved as apatite. It also preserves a nearly complete
gastral basket, for the first time in ophthalmosaurids. Soft tissue samples were
analyzed using X-ray diffraction (XRD) and scanning electron microscopy (SEM)
coupled with energy dispersive spectroscopy (EDS) analysis. The analyses confirm
the presence of apatite, with phosphate most likely derived from the body itself.