MUSEO ARGENTINO DE CIENCIAS NATURALES "BERNARDINO RIVADAVIA"
Unidad Ejecutora - UE
Elipsoideichnus meyeri Roselli 1987 revisited: A helicoidal fossil bee nest from the Paleogene of Uruguay
MARIANO VERDE; JORGE F. GENISE
Spanish Journal of Palaeontology
Sociedad Española de Paleontologia
Lugar: Madrid; Año: 2014 vol. 29 p. 25 - 25
The rare helicoidal trace fossil Elipsoideichnus meyeri Roselli 1987 was known only from its holotype. New materials were collected and revised, confirming the validity and interpretation of this ichnotaxon. Its previously inferred internal structure, composed of two pair of internal, opposite cells per whorl, was checked and completed with these new materials. Sections of specimens show that cells have a thick lining. The fi nding of a spiral cap in cells fi nally confirms that unknown bees are the trace makers of E. meyeri, possibly related with Oxaeinae or Halictinae.