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Hajar | profile | all galleries >> Palaeogalleries >> La Voulte Jurassic tree view | thumbnails | slideshow

La Voulte Jurassic

One of three celebrated exceptionally preserved faunas in which soft tissue was replaced by pyrite. The other two are the Ordovician of New York State and the Devonian slates near Bundenbach in Germany.

The mudstones and marls of La Voulte sur-Rhône (Ardèche, France), a locality of Early Callovian age (koenigi Zone), have yielded a diverse and exceptionally well-preserved pyritized marine fauna.
Here I show examples of cephalopods (vampyropods), crustaceans (decapods), echinoderms (ophiuroids), worms (including sipunculids) and molluscs (gastropods and bivalves).
I have one single specimen in which all of the groups mentioned in the previous sentence can be seen, some as very small individuals.
La Voulte Vampyromorph coleoid, Vampyronassa rhodanica Vampyronassa micro CT image, dorsal view. Note fins at rear end of body. Vampyronassa micro CT image Vampyronassa micro CT image showing beaks
La Voulte vampyropod. The tip of a beak is just visible behind one of the arms. La Voulte vampyropod showing arms and the tip of the beak protruding. Vampyronassa view of beaks from front, micro CT image La Voulte vampyropod, dorsal view. Dorsal arms are swept back over the head.
La Voulte decapod (Penaeid prawn) with prominent eyes, 23 mm. La Voulte decapod (Penaeid prawn) with prominent eyes, 23 mm. La Voulte decapod with prominent eyes, 23 mm. La Voulte decapod with prominent eyes, 23 mm.
Ophiopinna elegans in micro CT image La_Voulte_slab.jpg La Voulte Ophiopinna, vampyropod (previous image) and partially pyritized Bositra buchi La Voulte everything.jpg
La Voulte Ophiopinna elegans to 44 mm from arm tip to arm tip. La Voulte ophiuroids, Ophiopinna elegans, 37 mm from tip to tip. Ophiopinna elegans detail showing spines and swimming paddles at the end of a limb La Voulte Bositra buchi, 16 mm across
La Voulte Bositra buchi bivalve with ophiuroid La Voulte snail with ophiuroid La Voulte snail La Voulte cumacean crustacean, 7 mm around the curve. Palaeocuma hessi Bachmayer, 1960
La Voulte Ophiopinna elegans, 40 mm arm tip to arm tip with 7 mm pycnogonid body and head La Voulte Bositra buchi bivalve, worm and juvenile Ophiopinna La Voulte spiunculid Ophio.jpg La Voulte shrimp (25 mm), sipunculid worm and ophiuroid
La Voulte unknown La_Voulte_shrimp_worm.jpg La Voulte shrimp, I think perhaps Archeosolenocera straeleni An exceptionally complete 5 cm thylacocephalan, Dollocaris ingens

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victorswan06-Dec-2019 15:07
A lovely gallery BV
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