In anatomical textbooks the divisions of the muscular system invariably are presented from a topographical viewpoint. This is an artificial arrangement and is confusing to the student. For a thorough understanding of myology a knowledge of the morphology is requisite, and the morphological presentat
On the phylogenetic arrangement of the Sauropsida
โ Scribed by Dr. G. Baur
- Publisher
- John Wiley and Sons
- Year
- 1887
- Tongue
- English
- Weight
- 516 KB
- Volume
- 1
- Category
- Article
- ISSN
- 0362-2525
No coin nor oath required. For personal study only.
โฆ Synopsis
Cope' has given the following classification of the Reptilia :-A. Extremities not differentiated in form beyond proximal I. 0 s quadratum immovably articulated to squamosal, etc.
Tubercular and capitular rib-articulations present and distinct.
I . Ichthyopterygia.
A.A. Elements of extremities differentiated. 11. 0 s quadratum immovably articulated, capitular and tubercular rib-articulations distinct. ARCHOSAURIA.
Pubis and ischium united, and with little or no obturater foramen ; one posterior cranial arch ; limbs ambulatory ; a procoracoid.
2 . Theromovpha.
Ischium and pubis distinct, the latter directed forwards, backwards, or downwards ; two posterior cranial arches ; limbs ambulatory ; no procoracoid.
3 . Binosauria
(+ Crocodilia) .
limbs volant.
4. Omithosauria.
segment.
Ischium and pubis united ; two postcranial arches ; anterior 111. 0 s quadratum closely united to cranial arches ; but one rib-articulation. SYNAPTOSAURIA.
Distinct hyposternal and postabdominal bones ; ribs joining each two vertebrae, and generally forming a carapace ; one posterior cranial arch.
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