1-9 OF 9 RESULTS FOR

Pterocephaliidae

Results shown limited to content with bounding coordinates.
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Journal Article
Published: 01 November 2011
Journal of Paleontology (2011) 85 (6): 1128–1153.
...Melanie J. Hopkins Abstract Considerable systematic work devoted to late Cambrian trilobites includes very little species-level phylogenetic analysis. This paper presents the phylogenetic analysis of 36 species representing eight genera assigned to the Family Pterocephaliidae that occur...
FIGURES | View All (13)
Journal Article
Published: 01 May 2010
Journal of Paleontology (2010) 84 (3): 493–504.
... to be uncertain, but Jell ( in Jell and Adrain, 2003 ) ascribed it to Pterocephaliidae Kobayashi, 1935 based on Zhou's original generic concept. The cranidial characteristics of Guangxiaspis and Pterocephalia are grossly similar but differ in many details such as the supramarginal suture, the presence...
FIGURES | View All (7)
Journal Article
Journal: Paleobiology
Published: 05 December 2016
Paleobiology (2017) 43 (1): 49–67.
FIGURES | View All (5)
Journal Article
Published: 01 July 2020
Journal of Paleontology (2020) 94 (4): 653–680.
... the class Trilobita (also based upon informed opinion rather than formal phylogenetic analysis). In that work, he proposed an order Olenida that included other taxa formerly included in the Ptychopariida or the Asaphida (e.g., Pterocephaliidae such as Pterocephalia and Housia and Aphelaspididae...
FIGURES | View All (11)
Journal Article
Journal: Paleobiology
Published: 01 November 2020
Paleobiology (2020) 46 (4): 569–593.
FIGURES | View All (7)
Journal Article
Published: 01 November 2000
Journal of Paleontology (2000) 74 (6): 1000–1019.
... ). At the end of Ayusokkanian and the beginning of Sakian time ( Fig. 1 ), sea level rise was replaced by gradual fall. It is most evidently, but not drastically, reflected in the fauna of the outer shelf where replacement of less important taxa took place. At the beginning of Sakian time Pterocephaliidae...
FIGURES | View All (15)
Journal Article
Journal: Paleobiology
Published: 31 August 2018
Paleobiology (2018) 44 (4): 603–619.
... 40 : 352 – 373 . Hopkins , M. J. 2017 . How well does a part represent the whole? A comparison of cranidial shape evolution with exoskeletal character evolution in the trilobite family Pterocephaliidae . Palaeontology 60 : 309 – 318 . Holland , S. M. , and M. E...
FIGURES | View All (6)
Journal Article
Journal: Paleobiology
Published: 07 May 2014
Paleobiology (2014) 40 (3): 331–351.
FIGURES | View All (10)
Journal Article
Published: 01 November 2001
Journal of Paleontology (2001) 75 (6): 1141–1151.
... of the relevant trilobites are described, so it is not certain that the asaphoid protaspis was present early on in all members of the group. Stratigraphically early Asaphida, including some Pterocephaliidae, may have a “relict” rostral plate (rostellum) anterior to the median suture ( Chatterton and Ludvigsen...
FIGURES