Murrindalaspis is an extinct genus of acanthothoracidplacoderm found in the McLarty Member of the Murrindal Limestone, of the Early Devonian-aged Buchan Group in eastern Victoria, Australia.[1]Murrindalaspis differs from other acanthothoracids by having a dorsal plate with a large, blade-like flattened, recurved crest emanating from the medial line, and no ventral keel. So far, the genus is known only from dorsal plates and ossified eyeballs. The genus differs from the closely related Weejasperaspis in that the dorsal crest of the latter is shorter, and triangular-shaped.
There are two species in the genus. M. wallacei, the type species, has a high dorsal medial crest. The second species, M. bairdi, has a much lower crest, a groove along the median line of the ventral side of the dorsal plate, and somewhat coarser tubercles on the dermal surfaces of its armor.
Referencesedit
^Long, J. A. (1984). "New placoderm fishes from the Early Devonian Buchan Group, eastern Victoria". Proceedings of the Royal Society of Victoria. 96 (4): 173–186. ISSN 0035-9211.
murrindalaspis, extinct, genus, acanthothoracid, placoderm, found, mclarty, member, murrindal, limestone, early, devonian, aged, buchan, group, eastern, victoria, australia, differs, from, other, acanthothoracids, having, dorsal, plate, with, large, blade, lik. Murrindalaspis is an extinct genus of acanthothoracid placoderm found in the McLarty Member of the Murrindal Limestone of the Early Devonian aged Buchan Group in eastern Victoria Australia 1 Murrindalaspis differs from other acanthothoracids by having a dorsal plate with a large blade like flattened recurved crest emanating from the medial line and no ventral keel So far the genus is known only from dorsal plates and ossified eyeballs The genus differs from the closely related Weejasperaspis in that the dorsal crest of the latter is shorter and triangular shaped MurrindalaspisTemporal range Early Devonian Weejasperaspis gavini Murrindalaspis wallacei amp Brindabellaspis stensioi Scientific classification Kingdom Animalia Phylum Chordata Class Placodermi Order Acanthothoraci Family Weejasperaspididae Genus Murrindalaspis Type species Murrindalaspis wallaceiLong 1984 Species Murrindalaspis wallacei Murrindalaspis bairdiSpecies editThere are two species in the genus M wallacei the type species has a high dorsal medial crest The second species M bairdi has a much lower crest a groove along the median line of the ventral side of the dorsal plate and somewhat coarser tubercles on the dermal surfaces of its armor References edit Long J A 1984 New placoderm fishes from the Early Devonian Buchan Group eastern Victoria Proceedings of the Royal Society of Victoria 96 4 173 186 ISSN 0035 9211 External links editMurrindalaspis at the Paleobiology Database nbsp This article about a placoderm is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Murrindalaspis amp oldid 1143074232, wikipedia, wiki, book, books, library,
