Geological magazine . Shield of Feltocaris. Discinocaris. In 1866,^ I described another form of head-shield of a Phyllopod from the Lower Silurianof Dumfriesshire, under the name of Discino-caris (Fig. 2), having a rectangular cervicalsuture (c, c, c) and no dorsal suture. In 1872,* I described a third form of Phyl-lopod shield, from the Middle Silurian ofPlawick, under the name Aptychojms, in whichthe cervical suture is rectangular (Fig. 3, c, d, c)and a straight dorsal suture d, d, is also present. The specimen with which I have now beenfavoured by Professor G. Dewalque offers afourth form t
Geological magazine . Shield of Feltocaris. Discinocaris. In 1866,^ I described another form of head-shield of a Phyllopod from the Lower Silurianof Dumfriesshire, under the name of Discino-caris (Fig. 2), having a rectangular cervicalsuture (c, c, c) and no dorsal suture. In 1872,* I described a third form of Phyl-lopod shield, from the Middle Silurian ofPlawick, under the name Aptychojms, in whichthe cervical suture is rectangular (Fig. 3, c, d, c)and a straight dorsal suture d, d, is also present. The specimen with which I have now beenfavoured by Professor G. Dewalque offers afourth form to this interesting series of Phyl-lopod shields from the Upper Devonian. Itpresents us with an elliptical shield (Fig. 4),in which the cervical suture (c, c, c) is semi-circular, as in Peltocaris, but the dorsal sutureis absent, as in Piscinocaris. 4.
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Keywords: ., bookcentury1800, bookdecade1880, bookidgeologicalma, bookyear1882
