+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

The myocardinal organization of coalcomaninid rudists revisited

, : The myocardinal organization of coalcomaninid rudists revisited. Geobios, Memoire Special 22(Pages 75-85

The taxonomy of caprinid rudists was hitherto mainly based on the arrangement of the pallial canals, the myocardinal organization being subordinate. Representatives of the Coalcomaninae, both primitive (Amphitriscoelus) and advanced (Coalcomana, Caprinuloidea, Mexicaprina) are here compared with those of the Caprininae (Caprina, Caprinula and Offneria), with emphasis on the myocardinal organization. The Family Caprinidae must be defined principally after the myocardinal organization and not only on the geometry and the arrangement of the pallial canals. The canal architectural pattern should be used only for the diagnosis of the genera and the species. The definition of the family must to be based on the existence of a projecting posterior myophoral plate present either on the lower valve (Caprininae) or on the upper valve (Coalcomaninae). The characteristic feature of the Subfamily Coalcomaninae is the downward development of the posterior myophoral plate of the upper valve, which projects into the broad posterior cavity of the lower valve.


DOI: 10.1016/s0016-6995(98)80066-1

Other references

Supriyo Kumar Das; Joyanto Routh; Alakendra N.R.ychoudhury; J.V.l Klump; Rajesh Kumar Ranjan, 2009: Phosphorus dynamics in shallow eutrophic lakes: an example from Zeekoevlei, South Africa. Zeekoevlei is the largest freshwater lake in South Africa and has been suffering from hyper-eutrophic conditions since last few decades. We have used total P (TP), dissolved phosphate (PO43), organic P (OP), calcium (Ca) and iron (Fe) bound P frac...

Neimark, F.M.; Lugovaia, L.V.; Belova, N.D., 1961: Parapertussis bacillus and its significance in whooping cough. Zhurnal Mikrobiologii, Epidemiologii, i Immunobiologii 32: 49-53

Aguiar A.R., 1972: Surgery and chemo therapy in patients with neoplastic ascites. Cirugia Del Uruguay: 25-27

Buffoli, A.; Olivetti, L.; Micheletti, E.; Facchetti, F.; Moretti, R., 1982: Degree of malignancy of maxillary sinus cylindromas in relation to histologic characteristics. An analysis of 31 cylindromas and 65 squamous cell carcinomas of the human maxillary sinus, indicated that at a T2-T3, identical stage of development and with similar treatment, the carcinoma has a worse prognosis than the cylindroma, the latter b...

Hellwald, K.H.inz; Palukaitis, P., 1995: Two independent mechanisms are effective in replicase-mediated resistance against cucumber mosaic virus. Phytopathology 85(10): 1143

Trendelenburg, G.; Dirnagl, U., 2005: Neuroprotective role of astrocytes in cerebral ischemia: focus on ischemic preconditioning. Following focal cerebral ischemia ("stroke") a complex and dynamic interaction of vascular cells, glial cells, and neurons determines the extent of the ensuing lesion. Traditionally, the focus has been on mechanisms of damage, while rece...

Geisow, M.; Hart, P.D.; Young, M.R., 1982: Extracellular fusion of macrophage phagosomes with lysosomes. Cell Biology International Reports 6(4): 361-367

Sugita, Y.; Ohwada, C.; Kawaguchi, T.; Muto, T.; Tsukamoto, S.; Takeda, Y.; Mimura, N.; Takeuchi, M.; Sakaida, E.; Shimizu, N.; Tanaka, H.; Abe, D.; Fukazawa, M.; Sugawara, T.; Aotsuka, N.; Nishiwaki, K.; Shono, K.; Ebinuma, H.; Fujimura, K.; Bujo, H.; Yokote, K.; Nakaseko, C., 2016: Prognostic impact of serum soluble LR11 in newly diagnosed diffuse large B-cell lymphoma: A multicenter prospective analysis. LR11 (also called SorLA or SORL1) is a type I membrane protein, originally identified as a biomarker for atherosclerosis and Alzheimer's disease. We recently found that LR11 was specifically expressed in Diffuse Large B-cell lymphoma (DLBCL)...

Rehm, Jürgen.; Patra, J.; Popova, S., 2006: Alcohol-attributable mortality and potential years of life lost in Canada 2001: implications for prevention and policy. Background: Alcohol is one of the most important risk factors for burden of disease. Objective: To estimate the number of deaths and the years of life lost attributable to alcohol for Canada 2001 using different ways to measure alcohol exposure. M...

Lehtonen, T.; Markkula, T.; Soidinsalo, P.; Otonkoski, S.; Laine, J., 2016: Causes of stillbirth in Turku, Finland, 2001-2011. NlmCategory="UNASSIGNED">The objective of the study was to examine the causes of stillbirth in the district of Southwest Finland and to assess the importance of post-mortem examination, and the selection of a suitable classification s...