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Description: | Peterborough [district, Cambridgeshire], [England] [probably ex.] [Bed 10 (Hudson & Martill, 1994)], Oxford Clay [Formation, Peterborough Member, ("Gryphaea and Reptile Beds")], [*Kosmoceras jason jason* Zone],[Middle Callovian], [Jurassic (Middle)] ...pterygoid (R[both?!!]), teeth (11 fragments - all *Metriorhynchus sp.*!!) and jaw fragments from angular, dentary, splenial, surangular, premaxilla and nasal bones.
The fragile lower jaw components, which have had considerable restorative work done to them, are stored in Blue:1.1 (moved from LO:8.3) in the LHR.
Loan 2266 - Stephen C. Moss/Earth Sciences MSc: quadrate (L) RETURNED and supraoccipital RETURNED. Both pterygoids added to loan on 5/5/99 by JKI. 21/5/99 - angular (L), surangulars (L & posterior R), articular (R), coronoid (L), splenial (L) added to loan by JKI.
Loan 2271 (3/2/99, for 30 days) - Stephen C. Moss/Earth Sciences MSc: quadrate (R), basisphenoid {or was it basioccipital!! - needs to be assessed on final return of material from JKI}, stapes, opisthotic, prootic, exoccipital ALL RETURNED.
18/10, 20/10 + 22/10/99 - Loan 2318 (includes renewal of 2266 for V1921, and specimen V1129): over these 3 days, JKI removed the rest of specimen V1921, except for nasals, maxillae ischio-pubis (L), the cervical rib (level C3?) and the 11 fragments of *Metriorhynchus sp.* teeth - until 16/1/2000, MSc research project for Steve Moss, removed by JKI.
Nasals and pre/maxillae removed by SC Moss on JKI's behalf (loan 2377), 9/5/2000, including a renewal of loans 2266 and 2318 - due back on 9/9/2000.
Almost a complete skull - the set must have been split during packing as it was boxed in two separate sets which have been reunited by JKI. Unlike the other specimens of *Ophthalmosaurus sp.*, there has not been time to fully check the JKI card inventory for the specimen - this is largely because the specimen, though complete, is very fragmentary, making identification difficult. The above specimen listing is therefore more or less verbatim from JKI's account. This may account for a discrepancy during the return of material loaned to SC MOss and JK Ingham for their joint work reassembling the skull of Ophthalmosaurus: as well as quadrate (L) and supraoccipital (the initial part of Loan 2266), quadrate (R), basisphenoid, stapes, opisthotic, prootic, exoccipital (the V1921 component of Loan 2271), a basioccipital (unlisted in JKI's original inventory) returned - JKI swears that it was a part of V1921 when he was working on it (indeed, he only had questions regarding the basisphenoid/parasphenoid, which he said he had found with V1070, but believed it was part of the V1921 skull, composited for display, as it fits so well with those components, and matches the preservation better - however, Smellie's original listing of the specimen as displayed clearly mentions a basisphenoid, and he chose not to use extra caudals sent to him by ANL for completeness of display. Implies that any compositing would have to have been done by ANL prior to delivery to Glasgow. Basisphenoid/parasphenoid given number 109376, to reflect this doubt.
[If the basisphenoid that came back as 'basisphenoid V1921' is actually 'basisphenoid V1070', is it then possible that the basisphenoid of V1921 recorded as going out on Loan 2271 was actually the basioccipital of V1921? - it seems unlikely, but such a 'mis-spelling' could have been made and would explain much.]
What follows is Keith's summary of the state of the jaws:
Lower Jaw:Dentary-right-almost complete, missing tip and parts of flange -left-almost complete, missing parts of flange. Angular-R-almost complete, very minor pieces missing - L-incomplete, missing end and triangular piece of post. art. Surangular-R-incomplete, missing ant. end and edges chipped to post.-has artic. bone-L-incomplete, missing ant. end. Coronoid-L-almost complete-missing tip and minor pieces near art. end. Splenial-R-very incomplete, both prongs missing post. blade and tips of prongs -L-almost complete, missing parts of prongs and minor pieces to post. end.
Upper Jaw: Maxilla-L-almost complete, chipped, missing tip of post. end. Premaxilla-R-almost complete, missing ant. end, small triangle from blade, parts of flange-L-almost complete, part of ant. and post. ends missing, also chipped. Nasal-L-almost complete, chipped, parts of ant. and post. missing-R-incomplete, major parts of process & parts of ant. end missing. | License: | http://www.hmag.gla.ac.uk/spirit/rights/ | Publisher: | Hunterian Museum and Art Gallery, University of Glasgow | Rights holder: | Hunterian Museum and Art Gallery, University of Glasgow | Subjects: | VERTTETRREPTIL : ICHTHYICHTHY : FOSSIL : | Source: | Hunterian Museum | Creator: | Hunterian Museum and Art Gallery, University of Glasgow | Identifier: | http://www.huntsearch.gla.ac.uk/cgi-bin/... | Language: | en-GB | Go to resource |
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