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Hajar | profile | all galleries >> Palaeogalleries >> North American Ordovician >> New York Ordovician tree view | thumbnails | slideshow

New York Ordovician

The persistent exploration efforts of Markus Martin revealed new localities for "Beecher-style" soft body preservation in the Upper Ordovician (Katian Stage Lorraine Group) of New York.
His skill in preparation using air-abrasive techniques resulted in spectacular specimens revealing fine details of antennae and limbs in trilobites.
Associated with the trilobites were ostracods, sponges, orthocones, brachiopods, bryozoa, molluscs and graptolites.
A selection is shown below.
New York 44 mm Triarthrus eatoni, New York. Triarthrus eatoni, 5 cm showing limbs and antennae. Whetstone Gulf Formation, U Ordovician, Lewis Co, New York, USA. Computed tomography image of 5 cm Triarthrus Computed tomography image of 5 cm Triarthrus
New York Ordovician Triarthrus 22mm Dorsal and ventral views in micro CT scan of pyritized Triarthrus eatoni with limbs, 22 mm. Cryptolithus, partially pyritized, 1 cm wide. CT scan. Meadowtownella with limbs and antennae.
Meadowtownella with limbs and antennae. CT image. 3D print, x7 of Meadowtownella with antennae marked in black Meadowtownella extract from CT image showing swept back antenna Ostracod, Luprisca incuba, with eggs. Furca and limbs can be seen.
New York ostracod, Luprisca incuba, with limbs preserved, 3 mm. Pyritized spiral fecal trail (or, alternatively, a nematode) 3 mm diameter. macros 032.JPG USA New York sponge slab 6.jpg

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