. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 46 Bulletin Museum of Comparative Zoology, Vol. 144, No. 2 B. Figure 12. Echinerpeton intermedium. Maxillae: A, MCZ 4092; B, MCZ 4093; C, RM 10057 (also neural arch, frag- mentary rib and phalanx). All X !• Echinerpeton intermedium n. sp. Etymology. Greek echino, spiny, plus erpeton, reptile. Intermedium, intermedi- ate, in referenee to the presenee ol numer- ous intermediate between those of typieal ophiaeodonts and sphenaco- donts. Holotype. Museum of Comparative Zool- ogy, Harvard, MCZ 4090. block
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 46 Bulletin Museum of Comparative Zoology, Vol. 144, No. 2 B. Figure 12. Echinerpeton intermedium. Maxillae: A, MCZ 4092; B, MCZ 4093; C, RM 10057 (also neural arch, frag- mentary rib and phalanx). All X !• Echinerpeton intermedium n. sp. Etymology. Greek echino, spiny, plus erpeton, reptile. Intermedium, intermedi- ate, in referenee to the presenee ol numer- ous intermediate between those of typieal ophiaeodonts and sphenaco- donts. Holotype. Museum of Comparative Zool- ogy, Harvard, MCZ 4090. block , partial skeleton, immature indi\'idual. Paratypes. MCZ 4091, block A, almost complete interclavicle, xertebral material; MCZ 4092, block , a left maxilla, com- plete; MCZ 4093, block , a fratrinent of a right maxilla; MCZ 4094, block , fragments of three neural arches belonging to a more mature individual than MCZ 4090; RM 10057. block D, an almost com- plete right maxilla, a neural arch, rib, and a phalanx. Horizon and locality. Morien Group, within 25 feet abo\'e the Lloyd Cove coal seam, equivalent to the late Westphalian D of Europe. Dominion Coal Co., strip mine No. 7, 2 miles north of Florence, Cape Breton County, Nova Scotia. Diagnosis. Same as for genus. Description. Much of the description is based on a single, somewhat scattered skele- ton (MCZ 4090) (Fig. 11). Isolated ma- terial from five additional indixiduals car be questionably associated. Skidl The onlv skull elements that can be associated with this genus are three maxillae (Fig. 12) and two dentaries. A complete left maxilla (MCZ 4092), and a fragmentary right maxilla (MCZ 4093) are found in block In block D, an almost complete right maxilla (RM 10057) was found lying close to the neural arch, a rib, and a phalanx. The complete maxilla (block ) is 28 mm long and reaches a maximum height of only mm behind the canines. The ventral surface of the maxilla is straight, as in r
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