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The adult Cokendolpher cave harvestman is pale orange and roughly textured. They have no eyes. However, they do have round bumps on their heads, called eye mounds, which are vestigial structures where their ancestors previously had eyes. The species’ body is oval shaped and ranges from 1.28 millimeters (mm) (0.05 inches) to 1.67 mm (0.07 ...
Fossils of the other listed taxa were preserved in the Llano Uplift area. Vertebrates included armored fishes, also preserved in the Llano Uplift. [7] Contemporary placoderms were preserved in central Texas. [6] Like the state's Devonian rocks, those of Early Carboniferous age are buried below the surface and inaccessible apart from core ...
Fossilized skeleton of the Permian primitive four-limbed animal Seymouria †Seymouria – type locality for genus †Seymouria baylorensis – type locality for species †Shouchangoceras †Sigillaria †Sigillaria brardii †Slaugenhopia – type locality for genus; Solemya – tentative report †Solenochilus †Solenopora †Spermatodus
Baioconodon Baiomys † Baiomys rexroadi † Baiotomeus † Baiotomeus douglassi Bairdia † Bairdia oviformis A living Balanophyllia stony coral Balanophyllia † Balanophyllia augustinensis – type locality for species † Balanophyllia desmophyllum † Balanophyllia irrorata † Balanophyllia ponderosa Balanus Balcis † Balcis exilis † Balcis tenua † Balcis wheeleri Three fossilized ...
Oct. 4 is World Animal Day, so we want to introduce you to the official animals of Texas. Do you think you could guess them all?
In humans, the vermiform appendix is sometimes called a vestigial structure as it has lost much of its ancestral digestive function.. Vestigiality is the retention, during the process of evolution, of genetically determined structures or attributes that have lost some or all of the ancestral function in a given species. [1]
X-ray showing the skeleton of Typhlonectes (Typhlonectidae). Caecilians' anatomy is highly adapted for a burrowing lifestyle. In a couple of species belonging to the primitive genus Ichthyophis vestigial traces of limbs have been found, and in Typhlonectes compressicauda the presence of limb buds has been observed during embryonic development, remnants in an otherwise completely limbless body. [7]
The Red Beds of Texas and Oklahoma are a group of Early Permian-age geologic strata in the southwestern United States cropping out in north-central Texas and south-central Oklahoma. They comprise several stratigraphic groups , including the Clear Fork Group , the Wichita Group , and the Pease River Group . [ 1 ]