Banner
Introduction | Search taxa | Taxon tree | Specimens | Attributes | Literature | Photo gallery | Stats | Log in

Echinoidea source details

McNamara, K. J. & Philip, G. M. 1980. Australian Tertiary schizasteroid echinoids. Alcheringa 4, 47-65.
175995
McNamara, K. J.; Philip, G. M.
1980
Australian Tertiary schizasteroid echinoids
Alcheringa
4: 47-65
Publication
The taxonomy of schizasterid spatangoids is discussed and the term is restricted to include only Schizaster-like echinoids. Within the genus Schizaster Agassiz the following morphological subgenera are recognized: Paraster Pomel, Dipneustes Arnaud and Ova Gray. Seven species are described from Palaeocene to Miocene rocks of Australia. New species are S. (Paraster) carinatus, S. (Paraster) tatei, S. (Schizaster) halli and S. (Dipneustes) fosteri. Schizaster and its various morphotypes are thought to have evolved from a Linthia-like root stock through progressive morphological changes in test shape, form of ambulacra and adoral test morphology. Such changes are interpreted as being adaptations which allowed the sea urchins to occupy various levels of substrate in different sediment types. Morphotypes appear to have evolved iteratively, perhaps due to variation in the onset of sexual maturity.
RIS (EndNote, Reference Manager, ProCite, RefWorks)
BibTex (BibDesk, LaTeX)
Date
action
by
2014-03-21 09:59:04Z
created

 Fossil range

?Longfordian (Early Miocene) [details]

 Fossil range

Middle to Late Paleocene [details]

 Fossil range

Janjukian (Late Oligocene) to Longfordian (Early Miocene) [details]

 Stratigraphy

Tortachilla Limestone [details]

 Stratigraphy

Table Cap Beds & Cape Grim Beds [details]

 Type locality

Murray River at Swan Reach, South Australia [details]

 Type locality

Giaralia Range, Carnarvon Basin, Western Australia [details]

 Type locality

Maslin Beach – Port Willunga district, South Australia [details]

 Type locality

Table Cap; Cape Grim, Tasmania [details]

 Type material

HT: CPC 4822; PT: CPC 4823, 4824 [details]

 Type material

HT: NMV P55467; PT: NMV P55468, P55470 [details]

 Type material

HT: NMV P19036; PT: NMV P53219, P53220 [details]


Website and databases developed and hosted by VLIZ · Page generated 2019-02-20 GMT · contact: Kroh Andreas