taxonID	type	description	language	source
717487A28019F906FFACD6E668B6FA63.taxon	description	Conchodon infraliasicus Stoppani 1860 - 1865, Tab. 38, figs. 3 - 5. Plaster cast of an internal mould, painted in dark grey. The fossil was probably collected by Balsamo-Crivelli at the then Villa Frizzoni (now Villa Crella) in San Giovanni di Bellagio (CO) (Stoppani, p. 244). The original specimen, specifically designated as the type for Conchodon infraliasicus (Stoppani, p. 248) by the author, is considered lost. MSNM i 28033 - Fig. 3 Conchodon infraliasicus Stoppani 1860 - 1865, Tav. 39, fig. 1. Plaster reconstruction of a right valve. The size and ornamentation (fine concentric striae on the outer surface of the shell) match those of the specimen illustrated in T. 39, fig. 1 (Stoppani, p. 244). However, the hinges are dissimilar: in the illustration, the large front hinge tooth is globose and more irregular than that of the reconstruction, and there are two parallel cardinal teeth instead of one. Stoppani (p. 244) stated that the two cardinal teeth were a bit more prominent in the drawing, but the second tooth is not even roughly delineated in the valve reconstruction. The hinge seems to correspond more to the negative relief embossed in the plaster cast of the internal mould. A number ‘ 2. ’ is engraved at the centre of the interior surface of the valve: what this refers to is unknown. These differences raised doubts on whether the hinge illustrated in T. 39, fig. 1 corresponds to this plaster reconstruction. However, comparing it with the original plaster cast of the internal mould (MSNM i 28032), from which the reconstruction was derived, we noticed that the grooves (in positive relief) inside the reconstructed valve perfectly matched those on the right side of the cast of the mould: these grooves (attributed by Stoppani, p. 244, to ‘ de petits dégats causés comme par des vers lithophages ’, but that most likely represent the negative imprint of tube worms encrusting the interior of the original valve) are not present on the inner face of the valve in T. 39, fig. 1, nor on the illustration of the original internal mould given in T. 38, fig. 5. Moreover, the hinge of the original mould perfectly matches that of the reconstruction. It must be assumed, therefore, that the hinges illustrated in T. 39 were ‘ adapted’ by the author to show what he thought was their original appearance. In particular, the large cardinal tooth is not globose as in the reconstruction, and only one cardinal tooth is apparent. In the plaster cast of the mould, the left valve has an impression left by a possible second, not very evident, tooth (Stoppani emphasized that the two teeth in the drawing were ‘ exaggerated’) and a spherical cavity that corresponds perfectly to the globose cardinal tooth. Clearly, the decisions made by Stoppani when recreating the hinge were driven by the characteristics of the traces present in the mould of the left valve. Both valves were drawn as mirror images of each other, whereas Maestri’s reconstruction matched the original conformation.	en	Teruzzi, Giorgio (2015): The Stoppani Collection of Large Bivalves (Bivalvia, Megalodontida) from the Upper Triassic of Lombardy, Italy. Natural History Sciences 2 (1): 15-24, DOI: 10.4081/nhs.2015.231, URL: http://dx.doi.org/10.4081/nhs.2015.231
717487A28019F906FFACD77D6DADFAEB.taxon	description	Dicerocardium jani Stoppani, 1860 - 1865, Tab. 46, fig. 3. Part of the hinge of a left valve. This is the only surviving original specimen of those illustrated by Stoppani.	en	Teruzzi, Giorgio (2015): The Stoppani Collection of Large Bivalves (Bivalvia, Megalodontida) from the Upper Triassic of Lombardy, Italy. Natural History Sciences 2 (1): 15-24, DOI: 10.4081/nhs.2015.231, URL: http://dx.doi.org/10.4081/nhs.2015.231
717487A28019F905FCE2D6806F6CFEEA.taxon	description	Dicerocardium jani Stoppani, 1860 - 65, T. 41 - 42. Reconstruction of a right valve (2 copies, MSNM i 28034 a, c); reconstruction of a left valve, MSNM i 28034 b. Stoppani stated (p. 244) that he figured at Tab. 41, 42 and 43 the only specimen with intact umbos, integrating the missing part of the shell with that of other specimens. He did not mention creating reconstructions of both valves, as he had done for C. infraliasicus. In the reconstruction, the right and the left valve fit perfectly together: the two halves are remarkably similar to the illustration of D. jani (T. 41 - 42), and are also the same size. When viewed at the correct angle, the right valve is exactly the same as that drawn in T. 43. Internal views of two separated valves of D. jani are given in Stoppani, 1873, p. 364, fig. 67; the illustration is not as accurate as that of the plates in Paléontologie Lombarde and may have been executed directly from the reconstructions in question.	en	Teruzzi, Giorgio (2015): The Stoppani Collection of Large Bivalves (Bivalvia, Megalodontida) from the Upper Triassic of Lombardy, Italy. Natural History Sciences 2 (1): 15-24, DOI: 10.4081/nhs.2015.231, URL: http://dx.doi.org/10.4081/nhs.2015.231
717487A2801AF905FFACD2096C6DFC41.taxon	description	Dicerocardium curionii Stoppani, 1860 - 65, T. 51, figs. 1 - 3. Slightly damaged plaster cast of an internal mould of a specimen originally in the Stoppani collection and lost in 1943. MSNM i 28036 a, b - Fig. 6 Dicerocardium curionii Stoppani, 1860 - 65. T. 52. Reconstructions of the left and right valves of the original shell. The interior surface was based on the plaster cast of a specimen in the Stoppani collection illustrated in T. 51, figs. 1 - 3, of which the previously cited cast has survived. The exterior of the shell was based on the original illustrated in T. 51, figs. 4 and 5, of the Curioni Collection, and is considered lost.	en	Teruzzi, Giorgio (2015): The Stoppani Collection of Large Bivalves (Bivalvia, Megalodontida) from the Upper Triassic of Lombardy, Italy. Natural History Sciences 2 (1): 15-24, DOI: 10.4081/nhs.2015.231, URL: http://dx.doi.org/10.4081/nhs.2015.231
717487A2801AF905FFACD0A26877FE63.taxon	description	MSNM i 28042 - Fig. 7 Plaster reconstruction of an internal mould with elongated umbonal region. MSNM i 28039 - Fig. 8 Plaster reconstruction of an internal mould complete with both valves; it is a probably a hypothetical reconstruction of the form with extremely elongated, horn-shaped umbones of which fragmentary moulds are figured at. T. 55, figs. 1 - 5, with stippled lines indicating the missing parts. This reconstruction was not illustrated by Stoppani. MSNM i 28038 - Fig. 9 Hypothetical plaster reconstruction of an original right valve. It fits well with the previously described internal mould (MSNM i 28039). It was not illustrated by Stoppani, and differs from the reconstruction given by Stoppani in T. 54, fig. 4 of a left valve, because it does not depict the external striped ornamentation. MSNM i 28030, MSNM i 28041 - Fig. 10 To copies of the same hypothetical plaster reconstruction of an internal mould. This reconstruction differs from MSNM i 28042 and 28039, in that the umbonal area is shorter and broader; however, the hinge is similar.	en	Teruzzi, Giorgio (2015): The Stoppani Collection of Large Bivalves (Bivalvia, Megalodontida) from the Upper Triassic of Lombardy, Italy. Natural History Sciences 2 (1): 15-24, DOI: 10.4081/nhs.2015.231, URL: http://dx.doi.org/10.4081/nhs.2015.231
717487A2801AF905FCE2D280695DFD30.taxon	description	Megalodon guembelii Stoppani 1860 - 65, T. 56, figs. 1 - 3 Cast of an internal mould: it corresponds to the original specimen from Songavazzo (Bergamo), figured by Stoppani, T. 56, figs. 1 - 3.	en	Teruzzi, Giorgio (2015): The Stoppani Collection of Large Bivalves (Bivalvia, Megalodontida) from the Upper Triassic of Lombardy, Italy. Natural History Sciences 2 (1): 15-24, DOI: 10.4081/nhs.2015.231, URL: http://dx.doi.org/10.4081/nhs.2015.231
