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Description: | A set of nine (a, b, c, d, e, f, g, h, i)complete well preserved specimens of a fossil Howellella sp. brachiopods. They are all grey in colour. (a) The beak is very prominant. The pedicle opening is very clear. Some very fine growth lines can be seen (13mm x 9mm x7mm). (b) The specimen is covered in a brown coloured fine grained matrix which is in between the ribs. The growth lines are quite clear. The pedicle opening has been infilled with the fine sediment matrix. In some places the matrix has got a red/brown iron oxide coating (13mm x 9mm x 7mm). (c) A very prominant beak. The one valve has got a lot more pale fine matrix on than the other. The ribs are very prominant as are the fine growth lines (12mm x 10mm x 8mm). (d) In between the ribs there is a pale grey fine grained matrix. On the one end of one of the valves a large patch of a pale brown sediment is visible (4mm x 2mm). Where the pedicle opening and the hingle line is, it has also been infilled with the pale grey calcitic sediment. The sediment highlights the growth lines (11mm x 8mm x 8mm). (e) A lot of pale brown fine grained matrix covering the specimen particularly in between the ribs. This sediment highlights the growth lines in places. The pedicle opening is infilled with a calcitic sediment. There are some small spots of a pale orange iron oxide (12mm x 9mm x 5mm). (f) This is the brachial valve of a Howellella sp. brachiopod. The two teeth can be seen on the hinge line. This is a very well preserved specimen. There is some pale brown sediment highlighting the growth lines (9mm x 5mm x 2mm). (g) The specimen is covered with a pale brown fine grained matrix. The pedicle opening has a darker grey colour (8mm x 6mm x 4mm) (h) Within the ribs there is a pale brown fine grained matrix. The one side of the pedicle valve appears to be more elongated compared to the other side which appears to have been flattened. The beak is very prominant (8mm x 7mm x 5mm). (i) This specimen is covered a lot by the pale brown fine grained matrix, particularly around the beak (9mm x 7mm x 4mm). These specimens were from the Silurian Much Wenlock Limestone Formation, Nodular Member, dating at c425my and were collected from the Wrens Nest, Dudley, West Midlands. AR
A complete fossil Howellella sp. brachiopod which is approximately 425 million years old | License: | http://creativecommons.org/licenses/by/2.0/uk/ | Publisher: | Dudley Museums Service | Rights holder: | Dudley Museums Service | Subjects: | Steven Birch Collection Geology | Temporal: | Silurian - Wenlock | Source: | Black Country History | Identifier: | http://www.blackcountryhistory.org/colle... | Go to resource |
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