Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Of or pertaining to both the deltoid muscle and the pectoralis major
Etymologies
Sorry, no etymologies found.
Examples
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Its length, slender proportions and particularly prominent deltopectoral crest show that it is a brachiosaurid and, among brachiosaurids, its particularly long deltopectoral crest makes it unique and diagnosable.
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The new taxon is characterized by a plate-like medial process of the scapula, a prominent proximal expansion of the deltopectoral crest of the humerus, a strongly inclined distal articular surface of the radius, and a proximally and laterally hypertrophied proximal metacarpal I. Phylogenetic analysis recovers
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Laterally, a prominent longitudinal ridge extends along the base of the deltopectoral crest to form the lateral margin of the humerus, is similar to the condition in
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This relationship is supported by four unambiguous synapomorphies: height of neural arches subequal to or greater than the centrum height (Character 164: 0→1); minimum scapula width less than 20 percent its length (Character 200: 1→0); length of deltopectoral crest extends between 30 and
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Additionally, the prominent offset proximal hook of the deltopectoral crest is autapomorphic for
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In many basal sauropodomorph taxa, the proximal margin of the deltopectoral crest is offset sharply from the proximal articular surface; however, all other taxa lack the accompanying proximal expansion present in
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The anterior edge of the deltopectoral crest is rugose, with a straight proximodistally directed margin.
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The deltopectoral crest is prominent, extending anteriorly from the anterolateral edge of the humerus, and extending approximately 50% of the length of the humerus.
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The deltopectoral crest extends less than half the length of the element, with the distal origin located proximal to the middle of the shaft.
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Scapular blade forming a 45° angle with coracoid articulation; humeral distal condyles exposed on anterior of shaft; stout ulna; humeral deltopectoral crest markedly expanded distally; elliptical femoral mid-shaft cross-section; distal condyles of femur bevelled dorso-medially; astragalar posterior fossa undivided
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