New data on Cryptonella truyolsi García-Alcalde, 1999, cryptonellid (Terebratulidina) of the Cantabrian Mountains (N Spain)
DOI:
https://doi.org/10.7203/sjp.18.2.21646Palabras clave:
Terebratulida Cryptonelloidea, Lower Devonian, Cantabrian Mountains, N Spain, brachial loopResumen
A new population of Cryptonella truyolsi García-Alcalde, 1999 has been found in Caldas de Luna (province of León, Spain), La Vid Group, Coladilla Formation, level M-CAL-15 (upper part), upper Emsian. Most of morphological characters of the new specimens closely agree with those of the original Cryptonella truyolsi collections. However, serial sections made on a specimen of the new population show an anteriorly open cryptonelliform brachial loop that it is wider, and slightly shorter than that of the original material; furthermore, the descending and ascending branches are only fused along the anterior third of the loop, and the transverse band is narrower, and it is folded at its middle part. The diagnosis of Cryptonella truyolsi is consequently emended.
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Este es un artículo de libre acceso distribuido bajo los términos de la Creative Commons Attribution 4.0 International License.