Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_13 (authors VARCHAR, novelty VARCHAR, name VARCHAR)
### Question:
What is Authors, when Novelty is Gen Et Sp Nov, and when Name is Lanthanocephalus?
### Answer:
SELECT authors FROM table_name_13 WHERE novelty = "gen et sp nov" AND name = "lanthanocephalus"